Research Article
Split ViewerSedative Effect of Ketamin-Midazolam Administered at Acupoint GV20 Compared to Intramuscular Route in Blue-Fronted Amazon (Amazona aestiva): a Pilot Study
1Private Veterinary Acupuncture Practitioner, Cosmopolis, Sao Paulo, Brazil
2Centro de Recuperacao de Animais Silvestres (CRAS PET-TIETÊ) Parque Ecológico do Tiete, Sao Paulo, Brazil
3Private Veterinary Acupuncture Practitioner, Uberlândia, Minas Gerais, Brazil
4Department of Surgery, School of Veterinary Medicine, University of Sao Paulo, Sao Paulo, Brazil
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
J Acupunct Meridian Stud 2022; 15(5): 314-321
Published October 31, 2022 https://doi.org/10.51507/j.jams.2022.15.5.314
Copyright © Medical Association of Pharmacopuncture Institute.
Abstract
Objectives: To investigate pharmacopuncture at acupoint GV20 in blue-fronted Amazon parrots (Amazona aestiva) using ketamine and midazolam.
Methods: Sixteen healthy birds were distributed into four groups (C: intramuscular control; 1/2 C: 1/2 dose intramuscular control; 1/2 GV20: 1/2 dose at acupoint GV20; 1/5 GV20: 1/5 dose at acupoint GV20). Degree of sedation, latency, recuperation time, heart and respiratory rate, and body temperature were measured. Quantitative data were analyzed by a Student’s t-test.
Results: The C, 1/2 C, and 1/2 GV20 groups showed the same degree of sedation. The 1/2 GV20 group showed longer latency times (6 ± 2.1) than the 1/2 C (2.5 ± 0.5) group. Sedation time did not differ between the C (28 ± 9.8), 1/2 C (30.5 ± 8.6), and 1/2 GV20 (41 ± 22.24) groups. The 1/2 GV20 group recuperated faster (13.7 ± 3.7) than the C group (64.2 ± 3.5). The C and 1/2 C groups showed tremors and slow and unstable recovery. Two animals in the C group showed mild hypothermia (38°C).
Conclusion: The use of 1/2 GV20 was effective and safe to sedate blue-fronted Amazon parrots without side effects, providing easy, stable, and fast recovery. The use of 1/5 GV20 had a shorter sedation time. These findings show that the combination of acupuncture and drugs provides new possibilities for efficient anesthetic protocols with fewer side effects in birds.
Keywords
INTRODUCTION
The increasing growth of exotic pet medicine, with its economic and ecological impact, is leading to fast developments in wildlife clinical investigation, especially on birds. The urban environment can cause stress in birds and increase admission rates to wildlife rescues and rehabilitation centers [1,2].
Therefore, anesthetic procedures for birds have become more important in veterinary practice. In this sense, it is important to have safe chemical restraint options, enabling physical and auxiliary tests and minimizing stress factors [3]. The combination of acupuncture and drugs provides new possibilities for efficient anesthetic protocols with fewer side effects.
Acupuncture is a noninvasive and safe treatment option, as well as a widely accepted technique for alleviating pain and inflammation. Reports on domestic animals and, recently, in south tortoises, penguins, toucans, and raptors, have observed that acupuncture can normalize appetite and digestion, modulate the immune system function, treat musculoskeletal and neurological diseases, and reduce behavior problems [4-10].
Acupoint injection is a modern acupuncture method. A saline solution, distilled water, autologous blood, vitamins, homeopathic drugs, ozone, bee venom, and herbal medicine extracts are injected at acupoints, providing a prolonged mechanical stimulus [11-16]. Recently, pharmacopuncture, i.e., the injection of subclinical doses of drugs at acupoints, has been implemented with successful results in veterinary practice. Pharmacopuncture in animals has been shown to produce similar effects as conventional doses of drugs in horses, pigs, dogs, and cats [17-21]. In mammals, the main acupoints used for drug injections are YinTang, GV16 and GV20 [12,18,19,21-27]. The sedative effect at GV20 can be associated with alpha-2-adrenergic system activation [18]. The GV20 anatomic location is at the intersection of the sagittal dorsal line and the line connecting the ears [28]. GV20 is called the Guan Ji Point in birds, “the meeting point of all Yang channels,” and its stimulation has been shown to treat mental distress [28].
To the best of our knowledge, there are currently no reports on avian pharmacopuncture. Therefore, this pilot study aims to investigate pharmacopuncture at acupoint GV20 in blue-fronted Amazon parrots (
MATERIALS AND METHODS
Sixteen healthy adult blue-fronted Amazon parrots of unknown sex were included in this study. The birds were ringed for individual identification with a mean ± standard deviation body weight of 0.358 ± 0.615 kg (Fig. 1).
-
Figure 1.Slight physical restraint for weighing at blue-fronted Amazon parrot (
Amazona aestiva ).
The parrots were temporarily housed at the wild animal center of “Parque Ecológico do Tietê” (CRAS-PET) in São Paulo, SP, Brazil, before release. All the parrots underwent routine physical examinations and were considered in good health. The parrots were maintained in flocks of 16-20 enclosed birds. During the study, the parrots were individually housed in plastic cages for visual evaluation (Fig. 2).
-
Figure 2.Blue-fronted Amazon parrots (
Amazona aestiva ) individually housed in plastic cages for visual evaluation.
Study design
All the birds were randomly assigned to one of four treatments: 1) Drug Control (C), ketamine (15 mg/kg) and midazolam (1 mg/kg) injected into the pectoral muscle mass; 2) Half dose control (1/2 C), 50% ketamine (7.5 mg/kg) and midazolam (0.5 mg/kg) injected into the pectoral muscle mass; 3) Pharmacopuncture half dose (1/2 GV20), 50% ketamine (7.5 mg/kg) and midazolam (0.5 mg/kg) injected subcutaneously at acupoint GV20; 4) Pharmacopuncture 20% dose (1/5 GV20), 20% ketamine (3 mg/kg) and midazolam (0.2 mg/kg) injected subcutaneously at acupoint GV20 located at the intersection of the sagittal dorsal line and the line connecting the two ears (Fig. 3).
-
Figure 3.Pharmacopuncture in at acupoint GV20 in a blue-fronted Amazon parrot (
Amazona aestiva ).
The chosen dose is commonly used in clinical avian veterinary practice. The injections were performed using 6 mm × 0.25 mm (13G) hypodermic needles. Total experimental time was defined as the recuperation time for each animal to stay upright. In each set of experiments, four animals were observed by four blind evaluators. All behavioral responses were recorded in a behavior form (Appendix 1). The degree of sedation, latency, recuperation time, heart and respiratory rate, and body temperature were measured. The quantitative data were analyzed using a Student’s t-test. The degree of sedation was evaluated according to an adapted descriptive numeric scale (Table 1) [29].
-
Table 1 . Alertness score for sedation evaluation
Sedation Parameters Grade Satisfactory Closed eyes, decubitus, no movement, and muscle relaxation. 0 Moderate Light signs of tranquilization, possible decubitus, open eyes, responsive to stimulus. 1 Absent Standing position, open eyes, responsive to stimulus. 2
RESULTS
The C, 1/2 C, and 1/2 GV20 groups showed the same sedation degree (Fig. 4). In each group, three animals presented satisfactory sedation, and one had moderate sedation (Fig. 5A and 5B). Only one animal in the 1/5 GV20 group had satisfactory sedation, one had moderate sedation, and two had no sedation (Fig. 5C).
-
Figure 4.Pharmacopuncture-induced degree of sedation in blue-fronted Amazon parrots (
Amazona aestiva ).
-
Figure 5.Degree of sedation in blue-fronted Amazon parrots (
Amazona aestiva ). (A) Satisfactory sedation. (B) Moderate sedation. (C) Mixed sedation in Group 1/5 GV20: satisfactory sedation.
The C and 1/2 GV20 groups showed the same latency time (Table 2 and Fig. 6). The 1/2 GV20 group showed a longer latency time than the 1/2 C group, although both received the same dose of ketamine and midazolam (Table 2 and Fig. 6). The sedation time did not differ between the C, 1/2 C, and 1/2 GV20 groups (Table 2 and Fig. 6).
-
Table 2 . Mean and standard deviation of latency time, sedation time, and recuperation time (in minutes) in blue-fronted Amazon parrots (
Amazona aestiva )Parameter Group Mean and standard deviation Latency time C 4 ± 2.70 1/2 C 2.5* ± 0.57 1/2 GV20 6* ± 2.16 1/5 GV20 5 ± 5.83 Sedation time C 28 ± 9.83 1/2 C 30.5 ± 8.69 1/2 GV20 41 ± 22.24 1/5 GV20 6.25 ± 7.32 Recuperation time C 64.25* ± 3.59 1/2 C 27.5 ± 21.29 1/2 GV20 13.75* ± 3.77 1/5 GV20 7.5 ± 10.37 *
p < 0.05.
-
Figure 6.Pharmacopuncture mean values of latency, sedation, and recuperation time in blue-fronted Amazon parrots (
Amazona aestiva ).
The 1/2 GV20 group showed a faster recuperation time than the C group (Table 2 and Fig. 6). All animals from the C and 1/2 C groups showed tremors and had a slow and unstable recovery (Fig. 7). The 1/2 GV20 group had no adverse effects.
-
Figure 7.Unstable recuperation in a blue-fronted Amazon parrot (
Amazona aestiva ) after intramuscular administration of ketamine and midazolam.
DISCUSSION
The first evidence of veterinary acupuncture in China came from the Zhou Dynasty (1027 to 221 BC) when General Sun-Yang wrote the “Canon of Veterinary Medicine” (650 BC). However, it was not until 1825 that acupuncture was first used on a paralytic female dog at the Veterinary School of Alford [30-33]. Regardless of the abundant reports on the effect of acupuncture on domestic or experimental animals and humans, reports involving wild animals are rare [4-6,34-37]. Acupuncture is also not often described in birds and is mainly published as meeting abstracts and in a few case reports [7-10,38].
The sedative effects of pharmacopuncture are described in dogs, cats, and horses using several drugs and different acupoints. Xylazine pharmacopuncture at Yin Tang (10% of clinical doses) has been shown to induce sedation without bradycardia, cardiac arrhythmia, or emesis in dogs [24]. Acepromazine pharmacopuncture at GV1 (10% of clinical doses) has been shown to produce mild [12] to significant sedation in horses and reduce the mean heart rate and transport-induced increased heart rate at unloading during road transport [25].
Bird sedation is a routine technique and provides easier restraint, increasing the safety of clinical procedures [1,3]. Ketamine is one of the most used injectable anesthetics for most avian species [39]. The recommended dose for parrots is 10 to 50 mg/kg, requiring higher doses in smaller birds and longer recovery time in larger birds [40]. Ketamine injected intramuscularly has a latency period of three to five minutes and a duration of ten minutes. Complications, such as prolonged recovery, tremors, and poor muscle relaxation, are reported [39] Therefore, the combination of ketamine and sedatives, such as benzodiazepines (midazolam), is essential [41]. In turn, midazolam can cause muscle relaxation, though its duration is considered short [3]. When combined with ketamine, a dose of 0.2 to 4 mg/kg is recommended [40]. The combination of ketamine and midazolam is widely used in birds and recommended for short, minimally painful procedures or for anesthetic induction [42]. However, its application is questionable since its sedation period is short, and recovery is prolonged [43]. Thus, the present pilot study evaluated pharmacopuncture sedation effects in blue-fronted Amazon parrots using ketamine and midazolam. The C, 1/2 C, and 1/2 GV20 groups showed the same sedation degree, validating the use of half the recommended ketamine and midazolam dose at GV20 as an efficient anesthetic option with fewer side effects than traditional administration routes in blue-fronted Amazon parrots. Cost reduction is also an important aspect, as the most diverse birdlife resides in third world countries, mainly South America [44], where financial funds are scarce.
For mammals, 10 to 20% of the clinical dose for pharmacopuncture shows effective sedation [12,22-27]. In the present study, a 50% dose was needed to achieve the same sedation degree as in the control group. These results corroborate the sedative pharmacokinetics of birds, leading to the need for higher drug doses for traditional drug administration [1]. These results also corroborate the acupuncture theory in which birds are classified as warm and hyperactive species [5]. Indeed, mild sedation using pharmacopuncture (1/5 GV20) can be the first option for minor procedures like wing clipping and physical and imaging tests. As a clinical technique, a 20% clinical dose could be increased to 50% of the clinical dose if necessary. Therefore, there is a need for further studies to evaluate different drugs and acupoints for avian pharmacopuncture.
Systematic reviews show the use of pharmacopuncture on cervical pain, cancer-related symptoms (pain, ileus, hiccup, fever), and gastrointestinal signs. These reviews also show improved quality of life in human cancer patients [16,45,46]. However, few data are available on clinical indications for pharmacopuncture in animals [12,17-27].
Pharmacopuncture effects are directly related to acupoint specificity, i.e., correct acupoint selection and anatomical localization [17]. In this study, the easy access to GV20 facilitated injection and lessened the chance of error. GV20 pharmacopuncture is thus a new feasible adjuvant technique, executable even by non-acupuncturists for bird sedation.
The 1/2 GV20 group had a significantly higher latency time than the 1/2 C group (2.5 ± 0.57). This result was expected, as intramuscular absorption is faster than subcutaneous absorption, the pharmacopuncture route [17,24]. Despite the longer latency, the sedation degree was similar in both groups. The C (mean 4 ± 2.70 minutes) and 1/2 GV20 (6 ± 2.16 minutes) groups showed the same latency time, countersigning the acupoint action on drug effect [26]. Surprisingly, both the C and 1/2 C groups had the same sedation time.
This pilot study is limited by the small sample size. However, it was useful to obtain preliminary conclusions about the feasibility, cost, and outcome of pharmacopuncture in birds. The 1/2 GV20 group had a faster, calmer, and quicker anesthetic recovery (> 17 minutes), while the C and 1/2 C groups showed difficult and slow recuperation, with tremors and struggle [42,47]. Pharmacopuncture avoided these recovery complications and the risk of severe life‐threatening injuries in birds. Thus, pharmacopuncture is an effective route for blue-fronted Amazon parrot sedation, with fewer adverse effects than traditional drug administration routes.
Due to the multiplying and optimization effects of pharmacopuncture, it is necessary to reduce the dose to prevent the incidence of undesirable effects. For instance, the injection of total doses of dexmedetomidine at the GV20 of dogs was shown to increase the duration, degree of sedation, and analgesic effects. However, as expected, bradycardia was more significant in the acupuncture group [17].
In this study, all groups showed normal heart and respiratory rates. Two animals (50%) in the C group showed mild hypothermia (38°C), as expected. Hypothermia in birds leads to several changes in physiological parameters, such as bradycardia, low respiratory rate, bleeding, and death. Thus, GV20 pharmacopuncture is safe, reducing hypothermia risks, and is feasible in birds due to its easy access with usual physical restraint.
To our knowledge, this is the first study on pharmacopuncture at GV20 for sedation in birds. Further pharmacopuncture studies are needed to determine the optimal drug concentration and acupoint for maximal sedation without undesirable effects in blue-fronted Amazon parrots.
In conclusion, half the recommended dose of ketamine and midazolam at GV20 (1/2 GV20) was effective and safe to sedate blue-fronted Amazon parrots without side effects, providing easy, stable, and fast recovery. Twenty percent of the recommended dose at GV20 was also effective and safe and had a shorter sedation time in blue-fronted Amazon parrots without side effects. Therefore, these pharmacopuncture techniques can be useful for quick procedures, such as auxiliary tests. These findings are motivating, despite the small sample size, showing the need for further studies with larger sample sizes and different acupoints. Also, other bird species must be subjected to pharmacopuncture to evaluate the quality of sedation across all avians.
CONFLICT OF INTEREST
The authors declare no conflict of interest.
References
- Trevisan GA, Silva EL, Carvalho AL, Luiz RM. [Anesthetics effects of intranasal or intramuscular association of midazolam and racemic or S+ ketamine in budgerigars (
Melopsittacus undulatus )]. Cienc Anim Bras 2016;17:126-32. Portuguese. - Janssen K, Marsland C, Barreto MO, Charalambous R, Narayan E. Identifying the stressors impacting rescued avian wildlife. Animals (Basel) 2020;10:1500. https://doi.org/10.3390/ani10091500.
- Vila LG. Midazolam on restraint induced stress in wild birds [master's thesis]. Goiânia: Universidade Federal de Goiás; 2015. 72 p. Portuguese.
- Lloret L, Hayhoe S. A tale of two foxes--case reports: 1. Radial nerve paralysis treated with acupuncture in a wild fox. 2. Acupuncture in a fox with aggressive and obsessive behaviour. Acupunct Med 2005;23:190-5. https://doi.org/10.1136/aim.23.4.190.
- Mccluggage D. Acupuncture for the avian patient. In: Schoen AM, editor. Veterinary Acupuncture: Ancient Art to Modern Medicine. 2nd ed. St. Louis: Mosby, 2000, p. 307-22.
- Scognamillo-Szabó MV, Santos AL, Olegário MM, Andrade MB. Acupuncture for locomotor disabilities in a South American red-footed tortoise (Geochelone carbonaria) - a case report. Acupunct Med 2008;26:243-7. https://doi.org/10.1136/aim.26.4.243.
- Crouch MA. Egg binding and hind limb paralysis in an African penguin--a case report. Acupunct Med 2009;27:36-8. https://doi.org/10.1136/aim.2008.000158.
- Ortunho VV, Souza LO, Lobo RR, Soares G, Antonietti N, Santos L. [Association of the tratament conventional and acupuncture in wound treatment on a Toucan. A case report]. Rev Bras Hig Sanid Anim 2014;8:110-9. Portuguese.
- Souza LO, Ortunho VV. [Use of acupuncture in a
Ramphastos toco with paralysis in posterior member]. Rev Bras Hig Sanid Anim 2015;9:477-81. Portuguese. - Choi KH, Buhl G, Ponder J. Raptor acupuncture for treating chronic degenerative joint disease. J Acupunct Meridian Stud 2016;9:330-4. https://doi.org/10.1016/j.jams.2016.09.020.
- Nie GJ, Goodin AN, Braden TD, Wenzel JG. Luteal and clinical response following administration of dinoprost tromethamine or cloprostenol at standard intramuscular sites or at the lumbosacral acupuncture point in mares. Am J Vet Res 2001;62:1285-9. https://doi.org/10.2460/ajvr.2001.62.1285.
- Luna SP, Angeli AL, Ferreira CL, Lettry V, Scognamillo-Szabó M. Comparison of pharmacopuncture, aquapuncture and acepromazine for sedation of horses. Evid Based Complement Alternat Med 2008;5:267-72. https://doi.org/10.1093/ecam/nel096.
- Zhuang Y, Xing JJ, Li J, Zeng BY, Liang FR. History of acupuncture research. Int Rev Neurobiol 2013;111:1-23. https://doi.org/10.1016/B978-0-12-411545-3.00001-8.
- Teixeira LR, Luna SP, Taffarel MO, Lima AF, Sousa NR, Joaquim JG, et al. Comparison of intrarectal ozone, ozone administered in acupoints and meloxicam for postoperative analgesia in bitches undergoing ovariohysterectomy. Vet J 2013;197:794-9. https://doi.org/10.1016/j.tvjl.2013.05.015.
- Park KB, Shin KH, Song KH, Cho JH. The clinical study on bee-venom acupuncture on neck pain by traffic accidents. J Korea Inst Orient Med Inform 2005;11:49-56.
- Lee IS, Kang KS, Kim SY.
Panax ginseng pharmacopuncture: current status of the research and future challenges. Biomole. cules 2019;10:33. https://doi.org/10.3390/biom10010033. - Luna SP, Martino ID, Lorena SE, Capua ML, Lima AF, Santos BP, et al. Acupuncture and pharmacopuncture are as effective as morphine or carprofen for postoperative analgesia in bitches undergoing ovariohysterectomy. Acta Cir Bras 2015;30:831-7. https://doi.org/10.1590/S0102-865020150120000007.
- Pons A, Canfrán S, Benito J, Cediel-Algovia R, Gómez de Segura IA. Effects of dexmedetomidine administered at acupuncture point GV20 compared to intramuscular route in dogs. J Small Anim Pract 2017;58:23-8. https://doi.org/10.1111/jsap.12601.
- Scallan EM, Lizarraga I, Coursey CD, Wild JL, Simon BT. Thermal antinociceptive, sedative and cardiovascular effects of Governing Vessel 1 dexmedetomidine pharmacopuncture in healthy cats. Vet Anaesth Analg 2019;46:529-37. https://doi.org/10.1016/j.vaa.2019.03.004.
- Hassen KM, Posner LP, Campbell NB. The effect of aquapuncture at Pericardium 6 (PC-6) on dexmedetomidine-induced nausea and vomiting in cats. Vet Anaesth Analg 2019;46:308-14. https://doi.org/10.1016/j.vaa.2019.01.004.
- Reginato GM, Xavier NV, Alonso BB, Lima DP, Pereira Sirqueira TC, Carregaro AB. Pharmacopuncture analgesia using flunixin meglumine injection into the acupoint GV1 (Ho Hai) after elective castration in horses. J Equine Vet Sci 2020;87:10291. https://doi.org/10.1016/j.jevs.2020.102911.
- Faria AB. [Xylazine-pharmacopuncture for sedation of dogs] [master's thesis]. Uberlândia: Universidade Federal de Uberlândia; 2007. 37 p. Portuguese.
- Quessada AM, de Oliveira Drumond K, Batista Filho D, Pizzigatti Klein R, Macedo de Souza J, Melo Barreto F. [Pharmacopuncture with acepromazine to tranquilize swine]. Semin Cienc Agrar 2011;32:287-93. Portuguese.
- Cassu RN, Melchert A, Canoa JT, Martins PD. Sedative and clinical effects of the pharmacopuncture with xylazine in dogs. Acta Cir Bras 2014;29:47-52. https://doi.org/10.1590/S0102-86502014000100007.
- Godoi TLOS, Villas-Boas JD, Almeida NAS, Trigo PI, Almeida FQ, Medeiros MA. Pharmacopuncture versus acepromazine in stress responses of horses during road transport. J Equine Vet Sci 2014;34:294-301. https://doi.org/10.1016/j.jevs.2013.06.008.
- Neto JA, Quessada AM, Lopes RRFB, Alves RPA, Borges TB, Rufino PHQ. [Acepromazine subdose in
yin tang acupoint for dog tranquilization]. Arq Ciênc Vet Zool UNIPAR 2014;17:233-6. Portuguese. - Tannus LF, Eurides D, Mundim ED, Mundim VA, Eurides GP, Vieira RBK. [Effects of pharmacology with acepromazine maleate in tranquilization, hematology and vital parameters in cats]. Sci Electron Arch 2016;9:45-9. Portuguese.
- Hwang Y, Limehouse J. Canine acupuncture atlas. In: Schoen AM, editor. Veterinary Acupuncture: Ancient Art to Modern Medicine. 2nd ed. St. Louis: Mosby, 2001, p. 127-48.
- Kamiloglu A, Atalan G, Kamiloglu NN. Comparison of intraosseous and intramuscular drug administration for induction of anaesthesia in domestic pigeons. Res Vet Sci 2008;85:171-5. https://doi.org/10.1016/j.rvsc.2007.09.002.
- Cooper EL.
eCAM benefits from diversity that derives from CAM. Evid Based Complement Alternat Med 2005;2:263-5. https://doi.org/10.1093/ecam/neh120. - Hayashi AM, Matera JM, Fonseca Pinto AC. Evaluation of electroacupuncture treatment for thoracolumbar intervertebral disk disease in dogs. J Am Vet Med Assoc 2007;231:913-8. https://doi.org/10.2460/javma.231.6.913.
- Hayashi AM, Matera JM, da Silva TS, Pinto AC, Cortopassi SR. Electro-acupuncture and Chinese herbs for treatment of cervical intervertebral disk disease in a dog. J Vet Sci 2007;8:95-8. https://doi.org/10.4142/jvs.2007.8.1.95.
- Inoue M, Hojo T, Yano T, Katsumi Y. The effects of electroacupuncture on peripheral nerve regeneration in rats. Acupunct Med 2003;21:9-17. https://doi.org/10.1136/aim.21.1-2.9.
- Busnardo CA, Scognamillo-Szabó MVR, Goulart MR, Naves EA. Acupuntura para luxação vertebral lombar em sagüi-de-tufo-preto
Callithrix penicillata (geoffroyi 1812 - primates - callitrichidae) - relato de caso. Vet Not 2006;12(2 Suppl):24. Portuguese. - Garcia VC, Prado CV. Use of moxibustion as an auxiliary treatment in wound healing of the snake
Eunectes murinus (anaconda): case report. Arq Bras Med Vet Zootec 2017;69:1560-4. https://doi.org/10.1590/1678-4162-9464. - Nascimento LR, Wilson TM, Cápua MLB. Acupuntura no tratamento de síndrome vestibular em coelho - relato de caso. Investigação 2016;15:5-10. Portuguese.
- Santos JC, Ribeiro IS, Santos LS, Mustafa VS. [Clinical evolution of a black-tufted marmoset (
Callithrix penicillata ) through the use of acupuncture in clinical trauma: case report]. Pubvet 2020;14:713. Portuguese. - Junior JESL, Blotta AM. [Treatment of bilateral osteoarthritis in the coxal joint in a blue parrot (
Amazona aestiva ) with implantation of gold filaments in points of acupuncture - case report]. Rev Nosso Clín 2011;83:48-54. Portuguese. - De Paula VV. [Effect of premedication in parrots (Amazona aestiva), with ketamine alone or in association with diazepan, in the induction and anesthesia with sevoflurane] [dissertation]. São Paulo: Universidade de São Paulo; 2006. 129 p. Portuguese.
- Carpenter JW, Marion CJ. Exotic Animal Formulary. 5th ed. St. Louis: Elsevier, 2018.
- Bitencourt EH, Padilha VS, Lima MPA, Beier SL, Moraes AN, Oleskovicz N. [Sedative effects of the association Ketamine and Midazolam administered intranasally or intramuscular in parrots (Amazona aestiva and Amazona vinacea)]. Pesqui Vet Bras 2013;33:1125-9. Portuguese.
- Hawkins MG, Pascoe PJ. Cagebirds. In: West G, Heard DJ, Caulkett N, editors. Zoo Animal & Wildlife Immobilization and Anesthesia. Ames: Blackwell Publishing, 2007, p. 269-98.
- Vilani RGC. Anestesia injetável e inalatória. In: Cubas ZS, Silva JCR, Catão-Dias JL, editors. Tratado de Animais Selvagens: Medicina Veterinaria. 2nd ed. Sao Paulo: Editora Roca, 2014, p. 1826-37.
- Develey PF. Bird Conservation in Brazil: challenges and practical solutions for a key megadiverse country. Perspect Ecol Conserv 2021;19:171-8. https://doi.org/10.1016/j.pecon.2021.02.005.
- Kim DY, Hong SH, Han SY, Kim WY, Oh SH, Lee HW, et al. The research trends of pharmacopuncture therapy on cervical pain caused by traffic accidents. J Pharmacopuncture 2020;23:201-11. https://doi.org/10.3831/KPI.2020.23.4.201.
- Cheon S, Zhang X, Lee IS, Cho SH, Chae Y, Lee H. Pharmacopuncture for cancer care: a systematic review. Evid Based Com. plement Alternat Med 2014;2014:804746. https://doi.org/10.1155/2014/804746.
- Valverde A, Bienzle D, Smith DA, Dyson DH, Valliant AE. Intraosseous cannulation and drug administration for induction of anesthesia in chickens. Vet Surg 1993;22:240-4. https://doi.org/10.1111/j.1532-950x.1993.tb00392.x.
Related articles in JAMS
Article
Research Article
J Acupunct Meridian Stud 2022; 15(5): 314-321
Published online October 31, 2022 https://doi.org/10.51507/j.jams.2022.15.5.314
Copyright © Medical Association of Pharmacopuncture Institute.
Sedative Effect of Ketamin-Midazolam Administered at Acupoint GV20 Compared to Intramuscular Route in Blue-Fronted Amazon (Amazona aestiva): a Pilot Study
Aricia Noelli Brega Monteiro1,* , Bruno Simões Sérgio Petri2, Haroldo Furuya2 , Liliane Milanelo2 , Márcia Valéria Rizzo Scognamillo3, Ayne Murata Hayashi4
1Private Veterinary Acupuncture Practitioner, Cosmopolis, Sao Paulo, Brazil
2Centro de Recuperacao de Animais Silvestres (CRAS PET-TIETÊ) Parque Ecológico do Tiete, Sao Paulo, Brazil
3Private Veterinary Acupuncture Practitioner, Uberlândia, Minas Gerais, Brazil
4Department of Surgery, School of Veterinary Medicine, University of Sao Paulo, Sao Paulo, Brazil
Correspondence to:Aricia Noelli Brega Monteiro
Private Veterinary Acupuncture Practitioner, Cosmopolis, Sao Paulo, Brazil
E-mail aricia_monteiro@hotmail.com
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Background: The growth of exotic pet medicine is leading to fast developments in clinical investigations on birds. Acupuncture, specifically pharmacopuncture, offers safe chemical restraint options.
Objectives: To investigate pharmacopuncture at acupoint GV20 in blue-fronted Amazon parrots (Amazona aestiva) using ketamine and midazolam.
Methods: Sixteen healthy birds were distributed into four groups (C: intramuscular control; 1/2 C: 1/2 dose intramuscular control; 1/2 GV20: 1/2 dose at acupoint GV20; 1/5 GV20: 1/5 dose at acupoint GV20). Degree of sedation, latency, recuperation time, heart and respiratory rate, and body temperature were measured. Quantitative data were analyzed by a Student’s t-test.
Results: The C, 1/2 C, and 1/2 GV20 groups showed the same degree of sedation. The 1/2 GV20 group showed longer latency times (6 ± 2.1) than the 1/2 C (2.5 ± 0.5) group. Sedation time did not differ between the C (28 ± 9.8), 1/2 C (30.5 ± 8.6), and 1/2 GV20 (41 ± 22.24) groups. The 1/2 GV20 group recuperated faster (13.7 ± 3.7) than the C group (64.2 ± 3.5). The C and 1/2 C groups showed tremors and slow and unstable recovery. Two animals in the C group showed mild hypothermia (38°C).
Conclusion: The use of 1/2 GV20 was effective and safe to sedate blue-fronted Amazon parrots without side effects, providing easy, stable, and fast recovery. The use of 1/5 GV20 had a shorter sedation time. These findings show that the combination of acupuncture and drugs provides new possibilities for efficient anesthetic protocols with fewer side effects in birds.
Keywords: Acupuncture, Pharmacopuncture, Traditional chinese medicine, Parrot, Anesthesiology
INTRODUCTION
The increasing growth of exotic pet medicine, with its economic and ecological impact, is leading to fast developments in wildlife clinical investigation, especially on birds. The urban environment can cause stress in birds and increase admission rates to wildlife rescues and rehabilitation centers [1,2].
Therefore, anesthetic procedures for birds have become more important in veterinary practice. In this sense, it is important to have safe chemical restraint options, enabling physical and auxiliary tests and minimizing stress factors [3]. The combination of acupuncture and drugs provides new possibilities for efficient anesthetic protocols with fewer side effects.
Acupuncture is a noninvasive and safe treatment option, as well as a widely accepted technique for alleviating pain and inflammation. Reports on domestic animals and, recently, in south tortoises, penguins, toucans, and raptors, have observed that acupuncture can normalize appetite and digestion, modulate the immune system function, treat musculoskeletal and neurological diseases, and reduce behavior problems [4-10].
Acupoint injection is a modern acupuncture method. A saline solution, distilled water, autologous blood, vitamins, homeopathic drugs, ozone, bee venom, and herbal medicine extracts are injected at acupoints, providing a prolonged mechanical stimulus [11-16]. Recently, pharmacopuncture, i.e., the injection of subclinical doses of drugs at acupoints, has been implemented with successful results in veterinary practice. Pharmacopuncture in animals has been shown to produce similar effects as conventional doses of drugs in horses, pigs, dogs, and cats [17-21]. In mammals, the main acupoints used for drug injections are YinTang, GV16 and GV20 [12,18,19,21-27]. The sedative effect at GV20 can be associated with alpha-2-adrenergic system activation [18]. The GV20 anatomic location is at the intersection of the sagittal dorsal line and the line connecting the ears [28]. GV20 is called the Guan Ji Point in birds, “the meeting point of all Yang channels,” and its stimulation has been shown to treat mental distress [28].
To the best of our knowledge, there are currently no reports on avian pharmacopuncture. Therefore, this pilot study aims to investigate pharmacopuncture at acupoint GV20 in blue-fronted Amazon parrots (
MATERIALS AND METHODS
Sixteen healthy adult blue-fronted Amazon parrots of unknown sex were included in this study. The birds were ringed for individual identification with a mean ± standard deviation body weight of 0.358 ± 0.615 kg (Fig. 1).
-
Figure 1. Slight physical restraint for weighing at blue-fronted Amazon parrot (
Amazona aestiva ).
The parrots were temporarily housed at the wild animal center of “Parque Ecológico do Tietê” (CRAS-PET) in São Paulo, SP, Brazil, before release. All the parrots underwent routine physical examinations and were considered in good health. The parrots were maintained in flocks of 16-20 enclosed birds. During the study, the parrots were individually housed in plastic cages for visual evaluation (Fig. 2).
-
Figure 2. Blue-fronted Amazon parrots (
Amazona aestiva ) individually housed in plastic cages for visual evaluation.
Study design
All the birds were randomly assigned to one of four treatments: 1) Drug Control (C), ketamine (15 mg/kg) and midazolam (1 mg/kg) injected into the pectoral muscle mass; 2) Half dose control (1/2 C), 50% ketamine (7.5 mg/kg) and midazolam (0.5 mg/kg) injected into the pectoral muscle mass; 3) Pharmacopuncture half dose (1/2 GV20), 50% ketamine (7.5 mg/kg) and midazolam (0.5 mg/kg) injected subcutaneously at acupoint GV20; 4) Pharmacopuncture 20% dose (1/5 GV20), 20% ketamine (3 mg/kg) and midazolam (0.2 mg/kg) injected subcutaneously at acupoint GV20 located at the intersection of the sagittal dorsal line and the line connecting the two ears (Fig. 3).
-
Figure 3. Pharmacopuncture in at acupoint GV20 in a blue-fronted Amazon parrot (
Amazona aestiva ).
The chosen dose is commonly used in clinical avian veterinary practice. The injections were performed using 6 mm × 0.25 mm (13G) hypodermic needles. Total experimental time was defined as the recuperation time for each animal to stay upright. In each set of experiments, four animals were observed by four blind evaluators. All behavioral responses were recorded in a behavior form (Appendix 1). The degree of sedation, latency, recuperation time, heart and respiratory rate, and body temperature were measured. The quantitative data were analyzed using a Student’s t-test. The degree of sedation was evaluated according to an adapted descriptive numeric scale (Table 1) [29].
-
Table 1
Alertness score for sedation evaluation.
Sedation Parameters Grade Satisfactory Closed eyes, decubitus, no movement, and muscle relaxation. 0 Moderate Light signs of tranquilization, possible decubitus, open eyes, responsive to stimulus. 1 Absent Standing position, open eyes, responsive to stimulus. 2
RESULTS
The C, 1/2 C, and 1/2 GV20 groups showed the same sedation degree (Fig. 4). In each group, three animals presented satisfactory sedation, and one had moderate sedation (Fig. 5A and 5B). Only one animal in the 1/5 GV20 group had satisfactory sedation, one had moderate sedation, and two had no sedation (Fig. 5C).
-
Figure 4. Pharmacopuncture-induced degree of sedation in blue-fronted Amazon parrots (
Amazona aestiva ).
-
Figure 5. Degree of sedation in blue-fronted Amazon parrots (
Amazona aestiva ). (A) Satisfactory sedation. (B) Moderate sedation. (C) Mixed sedation in Group 1/5 GV20: satisfactory sedation.
The C and 1/2 GV20 groups showed the same latency time (Table 2 and Fig. 6). The 1/2 GV20 group showed a longer latency time than the 1/2 C group, although both received the same dose of ketamine and midazolam (Table 2 and Fig. 6). The sedation time did not differ between the C, 1/2 C, and 1/2 GV20 groups (Table 2 and Fig. 6).
-
&md=tbl&idx=2' data-target="#file-modal"">Table 2
Mean and standard deviation of latency time, sedation time, and recuperation time (in minutes) in blue-fronted Amazon parrots (
Amazona aestiva ).Parameter Group Mean and standard deviation Latency time C 4 ± 2.70 1/2 C 2.5* ± 0.57 1/2 GV20 6* ± 2.16 1/5 GV20 5 ± 5.83 Sedation time C 28 ± 9.83 1/2 C 30.5 ± 8.69 1/2 GV20 41 ± 22.24 1/5 GV20 6.25 ± 7.32 Recuperation time C 64.25* ± 3.59 1/2 C 27.5 ± 21.29 1/2 GV20 13.75* ± 3.77 1/5 GV20 7.5 ± 10.37 *
p < 0.05..
-
Figure 6. Pharmacopuncture mean values of latency, sedation, and recuperation time in blue-fronted Amazon parrots (
Amazona aestiva ).
The 1/2 GV20 group showed a faster recuperation time than the C group (Table 2 and Fig. 6). All animals from the C and 1/2 C groups showed tremors and had a slow and unstable recovery (Fig. 7). The 1/2 GV20 group had no adverse effects.
-
Figure 7. Unstable recuperation in a blue-fronted Amazon parrot (
Amazona aestiva ) after intramuscular administration of ketamine and midazolam.
DISCUSSION
The first evidence of veterinary acupuncture in China came from the Zhou Dynasty (1027 to 221 BC) when General Sun-Yang wrote the “Canon of Veterinary Medicine” (650 BC). However, it was not until 1825 that acupuncture was first used on a paralytic female dog at the Veterinary School of Alford [30-33]. Regardless of the abundant reports on the effect of acupuncture on domestic or experimental animals and humans, reports involving wild animals are rare [4-6,34-37]. Acupuncture is also not often described in birds and is mainly published as meeting abstracts and in a few case reports [7-10,38].
The sedative effects of pharmacopuncture are described in dogs, cats, and horses using several drugs and different acupoints. Xylazine pharmacopuncture at Yin Tang (10% of clinical doses) has been shown to induce sedation without bradycardia, cardiac arrhythmia, or emesis in dogs [24]. Acepromazine pharmacopuncture at GV1 (10% of clinical doses) has been shown to produce mild [12] to significant sedation in horses and reduce the mean heart rate and transport-induced increased heart rate at unloading during road transport [25].
Bird sedation is a routine technique and provides easier restraint, increasing the safety of clinical procedures [1,3]. Ketamine is one of the most used injectable anesthetics for most avian species [39]. The recommended dose for parrots is 10 to 50 mg/kg, requiring higher doses in smaller birds and longer recovery time in larger birds [40]. Ketamine injected intramuscularly has a latency period of three to five minutes and a duration of ten minutes. Complications, such as prolonged recovery, tremors, and poor muscle relaxation, are reported [39] Therefore, the combination of ketamine and sedatives, such as benzodiazepines (midazolam), is essential [41]. In turn, midazolam can cause muscle relaxation, though its duration is considered short [3]. When combined with ketamine, a dose of 0.2 to 4 mg/kg is recommended [40]. The combination of ketamine and midazolam is widely used in birds and recommended for short, minimally painful procedures or for anesthetic induction [42]. However, its application is questionable since its sedation period is short, and recovery is prolonged [43]. Thus, the present pilot study evaluated pharmacopuncture sedation effects in blue-fronted Amazon parrots using ketamine and midazolam. The C, 1/2 C, and 1/2 GV20 groups showed the same sedation degree, validating the use of half the recommended ketamine and midazolam dose at GV20 as an efficient anesthetic option with fewer side effects than traditional administration routes in blue-fronted Amazon parrots. Cost reduction is also an important aspect, as the most diverse birdlife resides in third world countries, mainly South America [44], where financial funds are scarce.
For mammals, 10 to 20% of the clinical dose for pharmacopuncture shows effective sedation [12,22-27]. In the present study, a 50% dose was needed to achieve the same sedation degree as in the control group. These results corroborate the sedative pharmacokinetics of birds, leading to the need for higher drug doses for traditional drug administration [1]. These results also corroborate the acupuncture theory in which birds are classified as warm and hyperactive species [5]. Indeed, mild sedation using pharmacopuncture (1/5 GV20) can be the first option for minor procedures like wing clipping and physical and imaging tests. As a clinical technique, a 20% clinical dose could be increased to 50% of the clinical dose if necessary. Therefore, there is a need for further studies to evaluate different drugs and acupoints for avian pharmacopuncture.
Systematic reviews show the use of pharmacopuncture on cervical pain, cancer-related symptoms (pain, ileus, hiccup, fever), and gastrointestinal signs. These reviews also show improved quality of life in human cancer patients [16,45,46]. However, few data are available on clinical indications for pharmacopuncture in animals [12,17-27].
Pharmacopuncture effects are directly related to acupoint specificity, i.e., correct acupoint selection and anatomical localization [17]. In this study, the easy access to GV20 facilitated injection and lessened the chance of error. GV20 pharmacopuncture is thus a new feasible adjuvant technique, executable even by non-acupuncturists for bird sedation.
The 1/2 GV20 group had a significantly higher latency time than the 1/2 C group (2.5 ± 0.57). This result was expected, as intramuscular absorption is faster than subcutaneous absorption, the pharmacopuncture route [17,24]. Despite the longer latency, the sedation degree was similar in both groups. The C (mean 4 ± 2.70 minutes) and 1/2 GV20 (6 ± 2.16 minutes) groups showed the same latency time, countersigning the acupoint action on drug effect [26]. Surprisingly, both the C and 1/2 C groups had the same sedation time.
This pilot study is limited by the small sample size. However, it was useful to obtain preliminary conclusions about the feasibility, cost, and outcome of pharmacopuncture in birds. The 1/2 GV20 group had a faster, calmer, and quicker anesthetic recovery (> 17 minutes), while the C and 1/2 C groups showed difficult and slow recuperation, with tremors and struggle [42,47]. Pharmacopuncture avoided these recovery complications and the risk of severe life‐threatening injuries in birds. Thus, pharmacopuncture is an effective route for blue-fronted Amazon parrot sedation, with fewer adverse effects than traditional drug administration routes.
Due to the multiplying and optimization effects of pharmacopuncture, it is necessary to reduce the dose to prevent the incidence of undesirable effects. For instance, the injection of total doses of dexmedetomidine at the GV20 of dogs was shown to increase the duration, degree of sedation, and analgesic effects. However, as expected, bradycardia was more significant in the acupuncture group [17].
In this study, all groups showed normal heart and respiratory rates. Two animals (50%) in the C group showed mild hypothermia (38°C), as expected. Hypothermia in birds leads to several changes in physiological parameters, such as bradycardia, low respiratory rate, bleeding, and death. Thus, GV20 pharmacopuncture is safe, reducing hypothermia risks, and is feasible in birds due to its easy access with usual physical restraint.
To our knowledge, this is the first study on pharmacopuncture at GV20 for sedation in birds. Further pharmacopuncture studies are needed to determine the optimal drug concentration and acupoint for maximal sedation without undesirable effects in blue-fronted Amazon parrots.
In conclusion, half the recommended dose of ketamine and midazolam at GV20 (1/2 GV20) was effective and safe to sedate blue-fronted Amazon parrots without side effects, providing easy, stable, and fast recovery. Twenty percent of the recommended dose at GV20 was also effective and safe and had a shorter sedation time in blue-fronted Amazon parrots without side effects. Therefore, these pharmacopuncture techniques can be useful for quick procedures, such as auxiliary tests. These findings are motivating, despite the small sample size, showing the need for further studies with larger sample sizes and different acupoints. Also, other bird species must be subjected to pharmacopuncture to evaluate the quality of sedation across all avians.
CONFLICT OF INTEREST
The authors declare no conflict of interest.
Fig 1.
Fig 2.
Fig 3.
Fig 4.
Fig 5.
Fig 6.
Fig 7.
-
Table 1 . Alertness score for sedation evaluation.
Sedation Parameters Grade Satisfactory Closed eyes, decubitus, no movement, and muscle relaxation. 0 Moderate Light signs of tranquilization, possible decubitus, open eyes, responsive to stimulus. 1 Absent Standing position, open eyes, responsive to stimulus. 2
-
Table 2 . Mean and standard deviation of latency time, sedation time, and recuperation time (in minutes) in blue-fronted Amazon parrots (
Amazona aestiva ).Parameter Group Mean and standard deviation Latency time C 4 ± 2.70 1/2 C 2.5* ± 0.57 1/2 GV20 6* ± 2.16 1/5 GV20 5 ± 5.83 Sedation time C 28 ± 9.83 1/2 C 30.5 ± 8.69 1/2 GV20 41 ± 22.24 1/5 GV20 6.25 ± 7.32 Recuperation time C 64.25* ± 3.59 1/2 C 27.5 ± 21.29 1/2 GV20 13.75* ± 3.77 1/5 GV20 7.5 ± 10.37 *
p < 0.05..
References
- Trevisan GA, Silva EL, Carvalho AL, Luiz RM. [Anesthetics effects of intranasal or intramuscular association of midazolam and racemic or S+ ketamine in budgerigars (
Melopsittacus undulatus )]. Cienc Anim Bras 2016;17:126-32. Portuguese. - Janssen K, Marsland C, Barreto MO, Charalambous R, Narayan E. Identifying the stressors impacting rescued avian wildlife. Animals (Basel) 2020;10:1500. https://doi.org/10.3390/ani10091500.
- Vila LG. Midazolam on restraint induced stress in wild birds [master's thesis]. Goiânia: Universidade Federal de Goiás; 2015. 72 p. Portuguese.
- Lloret L, Hayhoe S. A tale of two foxes--case reports: 1. Radial nerve paralysis treated with acupuncture in a wild fox. 2. Acupuncture in a fox with aggressive and obsessive behaviour. Acupunct Med 2005;23:190-5. https://doi.org/10.1136/aim.23.4.190.
- Mccluggage D. Acupuncture for the avian patient. In: Schoen AM, editor. Veterinary Acupuncture: Ancient Art to Modern Medicine. 2nd ed. St. Louis: Mosby, 2000, p. 307-22.
- Scognamillo-Szabó MV, Santos AL, Olegário MM, Andrade MB. Acupuncture for locomotor disabilities in a South American red-footed tortoise (Geochelone carbonaria) - a case report. Acupunct Med 2008;26:243-7. https://doi.org/10.1136/aim.26.4.243.
- Crouch MA. Egg binding and hind limb paralysis in an African penguin--a case report. Acupunct Med 2009;27:36-8. https://doi.org/10.1136/aim.2008.000158.
- Ortunho VV, Souza LO, Lobo RR, Soares G, Antonietti N, Santos L. [Association of the tratament conventional and acupuncture in wound treatment on a Toucan. A case report]. Rev Bras Hig Sanid Anim 2014;8:110-9. Portuguese.
- Souza LO, Ortunho VV. [Use of acupuncture in a
Ramphastos toco with paralysis in posterior member]. Rev Bras Hig Sanid Anim 2015;9:477-81. Portuguese. - Choi KH, Buhl G, Ponder J. Raptor acupuncture for treating chronic degenerative joint disease. J Acupunct Meridian Stud 2016;9:330-4. https://doi.org/10.1016/j.jams.2016.09.020.
- Nie GJ, Goodin AN, Braden TD, Wenzel JG. Luteal and clinical response following administration of dinoprost tromethamine or cloprostenol at standard intramuscular sites or at the lumbosacral acupuncture point in mares. Am J Vet Res 2001;62:1285-9. https://doi.org/10.2460/ajvr.2001.62.1285.
- Luna SP, Angeli AL, Ferreira CL, Lettry V, Scognamillo-Szabó M. Comparison of pharmacopuncture, aquapuncture and acepromazine for sedation of horses. Evid Based Complement Alternat Med 2008;5:267-72. https://doi.org/10.1093/ecam/nel096.
- Zhuang Y, Xing JJ, Li J, Zeng BY, Liang FR. History of acupuncture research. Int Rev Neurobiol 2013;111:1-23. https://doi.org/10.1016/B978-0-12-411545-3.00001-8.
- Teixeira LR, Luna SP, Taffarel MO, Lima AF, Sousa NR, Joaquim JG, et al. Comparison of intrarectal ozone, ozone administered in acupoints and meloxicam for postoperative analgesia in bitches undergoing ovariohysterectomy. Vet J 2013;197:794-9. https://doi.org/10.1016/j.tvjl.2013.05.015.
- Park KB, Shin KH, Song KH, Cho JH. The clinical study on bee-venom acupuncture on neck pain by traffic accidents. J Korea Inst Orient Med Inform 2005;11:49-56.
- Lee IS, Kang KS, Kim SY.
Panax ginseng pharmacopuncture: current status of the research and future challenges. Biomole. cules 2019;10:33. https://doi.org/10.3390/biom10010033. - Luna SP, Martino ID, Lorena SE, Capua ML, Lima AF, Santos BP, et al. Acupuncture and pharmacopuncture are as effective as morphine or carprofen for postoperative analgesia in bitches undergoing ovariohysterectomy. Acta Cir Bras 2015;30:831-7. https://doi.org/10.1590/S0102-865020150120000007.
- Pons A, Canfrán S, Benito J, Cediel-Algovia R, Gómez de Segura IA. Effects of dexmedetomidine administered at acupuncture point GV20 compared to intramuscular route in dogs. J Small Anim Pract 2017;58:23-8. https://doi.org/10.1111/jsap.12601.
- Scallan EM, Lizarraga I, Coursey CD, Wild JL, Simon BT. Thermal antinociceptive, sedative and cardiovascular effects of Governing Vessel 1 dexmedetomidine pharmacopuncture in healthy cats. Vet Anaesth Analg 2019;46:529-37. https://doi.org/10.1016/j.vaa.2019.03.004.
- Hassen KM, Posner LP, Campbell NB. The effect of aquapuncture at Pericardium 6 (PC-6) on dexmedetomidine-induced nausea and vomiting in cats. Vet Anaesth Analg 2019;46:308-14. https://doi.org/10.1016/j.vaa.2019.01.004.
- Reginato GM, Xavier NV, Alonso BB, Lima DP, Pereira Sirqueira TC, Carregaro AB. Pharmacopuncture analgesia using flunixin meglumine injection into the acupoint GV1 (Ho Hai) after elective castration in horses. J Equine Vet Sci 2020;87:10291. https://doi.org/10.1016/j.jevs.2020.102911.
- Faria AB. [Xylazine-pharmacopuncture for sedation of dogs] [master's thesis]. Uberlândia: Universidade Federal de Uberlândia; 2007. 37 p. Portuguese.
- Quessada AM, de Oliveira Drumond K, Batista Filho D, Pizzigatti Klein R, Macedo de Souza J, Melo Barreto F. [Pharmacopuncture with acepromazine to tranquilize swine]. Semin Cienc Agrar 2011;32:287-93. Portuguese.
- Cassu RN, Melchert A, Canoa JT, Martins PD. Sedative and clinical effects of the pharmacopuncture with xylazine in dogs. Acta Cir Bras 2014;29:47-52. https://doi.org/10.1590/S0102-86502014000100007.
- Godoi TLOS, Villas-Boas JD, Almeida NAS, Trigo PI, Almeida FQ, Medeiros MA. Pharmacopuncture versus acepromazine in stress responses of horses during road transport. J Equine Vet Sci 2014;34:294-301. https://doi.org/10.1016/j.jevs.2013.06.008.
- Neto JA, Quessada AM, Lopes RRFB, Alves RPA, Borges TB, Rufino PHQ. [Acepromazine subdose in
yin tang acupoint for dog tranquilization]. Arq Ciênc Vet Zool UNIPAR 2014;17:233-6. Portuguese. - Tannus LF, Eurides D, Mundim ED, Mundim VA, Eurides GP, Vieira RBK. [Effects of pharmacology with acepromazine maleate in tranquilization, hematology and vital parameters in cats]. Sci Electron Arch 2016;9:45-9. Portuguese.
- Hwang Y, Limehouse J. Canine acupuncture atlas. In: Schoen AM, editor. Veterinary Acupuncture: Ancient Art to Modern Medicine. 2nd ed. St. Louis: Mosby, 2001, p. 127-48.
- Kamiloglu A, Atalan G, Kamiloglu NN. Comparison of intraosseous and intramuscular drug administration for induction of anaesthesia in domestic pigeons. Res Vet Sci 2008;85:171-5. https://doi.org/10.1016/j.rvsc.2007.09.002.
- Cooper EL.
eCAM benefits from diversity that derives from CAM. Evid Based Complement Alternat Med 2005;2:263-5. https://doi.org/10.1093/ecam/neh120. - Hayashi AM, Matera JM, Fonseca Pinto AC. Evaluation of electroacupuncture treatment for thoracolumbar intervertebral disk disease in dogs. J Am Vet Med Assoc 2007;231:913-8. https://doi.org/10.2460/javma.231.6.913.
- Hayashi AM, Matera JM, da Silva TS, Pinto AC, Cortopassi SR. Electro-acupuncture and Chinese herbs for treatment of cervical intervertebral disk disease in a dog. J Vet Sci 2007;8:95-8. https://doi.org/10.4142/jvs.2007.8.1.95.
- Inoue M, Hojo T, Yano T, Katsumi Y. The effects of electroacupuncture on peripheral nerve regeneration in rats. Acupunct Med 2003;21:9-17. https://doi.org/10.1136/aim.21.1-2.9.
- Busnardo CA, Scognamillo-Szabó MVR, Goulart MR, Naves EA. Acupuntura para luxação vertebral lombar em sagüi-de-tufo-preto
Callithrix penicillata (geoffroyi 1812 - primates - callitrichidae) - relato de caso. Vet Not 2006;12(2 Suppl):24. Portuguese. - Garcia VC, Prado CV. Use of moxibustion as an auxiliary treatment in wound healing of the snake
Eunectes murinus (anaconda): case report. Arq Bras Med Vet Zootec 2017;69:1560-4. https://doi.org/10.1590/1678-4162-9464. - Nascimento LR, Wilson TM, Cápua MLB. Acupuntura no tratamento de síndrome vestibular em coelho - relato de caso. Investigação 2016;15:5-10. Portuguese.
- Santos JC, Ribeiro IS, Santos LS, Mustafa VS. [Clinical evolution of a black-tufted marmoset (
Callithrix penicillata ) through the use of acupuncture in clinical trauma: case report]. Pubvet 2020;14:713. Portuguese. - Junior JESL, Blotta AM. [Treatment of bilateral osteoarthritis in the coxal joint in a blue parrot (
Amazona aestiva ) with implantation of gold filaments in points of acupuncture - case report]. Rev Nosso Clín 2011;83:48-54. Portuguese. - De Paula VV. [Effect of premedication in parrots (Amazona aestiva), with ketamine alone or in association with diazepan, in the induction and anesthesia with sevoflurane] [dissertation]. São Paulo: Universidade de São Paulo; 2006. 129 p. Portuguese.
- Carpenter JW, Marion CJ. Exotic Animal Formulary. 5th ed. St. Louis: Elsevier, 2018.
- Bitencourt EH, Padilha VS, Lima MPA, Beier SL, Moraes AN, Oleskovicz N. [Sedative effects of the association Ketamine and Midazolam administered intranasally or intramuscular in parrots (Amazona aestiva and Amazona vinacea)]. Pesqui Vet Bras 2013;33:1125-9. Portuguese.
- Hawkins MG, Pascoe PJ. Cagebirds. In: West G, Heard DJ, Caulkett N, editors. Zoo Animal & Wildlife Immobilization and Anesthesia. Ames: Blackwell Publishing, 2007, p. 269-98.
- Vilani RGC. Anestesia injetável e inalatória. In: Cubas ZS, Silva JCR, Catão-Dias JL, editors. Tratado de Animais Selvagens: Medicina Veterinaria. 2nd ed. Sao Paulo: Editora Roca, 2014, p. 1826-37.
- Develey PF. Bird Conservation in Brazil: challenges and practical solutions for a key megadiverse country. Perspect Ecol Conserv 2021;19:171-8. https://doi.org/10.1016/j.pecon.2021.02.005.
- Kim DY, Hong SH, Han SY, Kim WY, Oh SH, Lee HW, et al. The research trends of pharmacopuncture therapy on cervical pain caused by traffic accidents. J Pharmacopuncture 2020;23:201-11. https://doi.org/10.3831/KPI.2020.23.4.201.
- Cheon S, Zhang X, Lee IS, Cho SH, Chae Y, Lee H. Pharmacopuncture for cancer care: a systematic review. Evid Based Com. plement Alternat Med 2014;2014:804746. https://doi.org/10.1155/2014/804746.
- Valverde A, Bienzle D, Smith DA, Dyson DH, Valliant AE. Intraosseous cannulation and drug administration for induction of anesthesia in chickens. Vet Surg 1993;22:240-4. https://doi.org/10.1111/j.1532-950x.1993.tb00392.x.