Clinical and echocardiographic evaluations of sedative and cardiovascular effects of combination of xylazine-acepromazine versus xylazine-pregabalin in horses

Document Type : Original Article

Authors

1 Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

2 Department of Internal Medicine and Clinical Pathology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

Abstract
The aim of this study was to compare the sedative and cardiovascular effects of the combination of xylazine-acepromazine versus xylazine-pregabalin - in horses. Four healthy crossbred horses were included in the study and assigned to two treatments. In treatment I (T1), the animals received xylazine hydrochloride (1.00 mg kg-1) in combination with acepromazine maleate (0.05 mg kg-1) intravenously. In treatment II (T2), the animals received intragastric administration of pregabalin (4.00 mg kg-1) followed by xylazine hydrochloride (1.00 mg kg-1) intravenously after 60 min. Head height above ground (HHAG) and echocardiographic indices were evaluated. In T1, recordings were made 5 minubefore and 5, 15, 30, 60, and 90 minu after drug administration. In T2, recordings were made 5 min before pregabalin, 55 minu after pregabalin administration, and then 5, 15, 30, 60, and 90 min after xylazine hydrochloride acepromazine injection. Analyses of the data showed there were no significant differences regarding HHAG and echocardiographic indices between the two treatments. Intragastric administration of pregabalin prior to xylazine could be considered as an alternative premedication regimen when acepromazine administration is contraindicated or undesirable.

Keywords

Subjects


  1. Ghazaleh N, Sharifi D, Ghamsari SM, et al. Evaluation of low-level laser effects on epidural anesthesia in horse. Iran J Vet Surg 2018; 13(1): 47-53.
  2. Mohammadi R, Hashemi-Asl SM. Management of olecranon fracture in a horse. Iran J Vet Surg 2018; 13(1): 67-72.
  3. Raayat Jahromi A, Lischer C, Ehrl A. Assessment of analgesic efficacy of intra-articular tramadol administration following arthroscopic surgery in horses - a pilot study. Iran J Vet Surg 2016; 11(1): 1-7.
  4. Bonagura JD, Blissitt KJ. Review article: echocardiography. Equine Vet J 1995; 27(S19): 5-17.
  5. Buhl R, Ersbøll AK, Larsen NH, et al. The effects of detomidine, romifidine or acepromazine on echocardiographic measurements and cardiac function in normal horses. Vet Anaesth Analg 2007; 34(1): 1-8.
  6. Chou CC, Chen CL, Rice BL, et al. Reduced resident time and pharmacodynamic effects of acepromazine after subclinical multiple dosage in exercised thorough-breds. J Vet Pharmacol Ther 2002; 25(5): 379-382.
  7. Taylor AH, Bolt DM. Persistent penile erection (priapism) after acepromazine premedication in a gelding. Vet Anesth Analg 2011; 38(5): 523-525.
  8. FEI Equine Anti-Doping and Controlled Medication 2nd ed. Fédération Equestre Internationale. FEI: Chemin de la Joliette, Lausanne, Switzerland; 2016.
  9. Zareba G. Pregabalin: a new agent for the treatment of neuropathic pain. Drugs Today (Barc) 2005; 41(8): 509-516.
  10. Mullen KR, Schwark W, Divers TJ. Pharmacokinetics of single-dose intragastric and intravenous pregabalin administration in clinically normal horses. Am J Vet Res 2013; 74(7): 1043-1048.
  11. Dezfouli MR, Tavanaeimanesh H, Houshangi AF, et al. Effects of xylazine and acepromazine on echocardiographic parameters in the healthy horse. Pferdeheilkunde Equine Med 2020; 36: 37-42.
  12. Ringer SK, Schwarzwald CC, Portier KG, et al. Effects on cardiopulmonary function and oxygen delivery of doses of romifidine and xylazine followed by constant rate infusions in standing horses. Vet J 2013; 195(2): 228-234.
  13. Tavanaeimanesh H, Dezfouli MR, Vajhi A, et al. The effect of 7.2% hypertonic saline solution on echocardiographic parameters of healthy horses. Equine Vet J 2015; 47(6): 741-744.
  14. Schwarzwald Equine echocardiography. Vet Clin North Am Equine Pract 2019; 35(1): 43-64.
  15. Steffey EP, Kelly AB, Farver TB, et al. Cardiovascular and respiratory effects of acetylpromazine and xylazine on halothane anesthetized horses. J Vet Pharmacol Ther 1985; 8(3): 290-302.
  16. Schwarzwald CC, Schober KE, Berli AS, et al. Left ventricular radial and circumferential wall motion analysis in horses using strain, strain rate, and displacement by 2D speckle tracking. J Vet Intern Med 2009; 23(4): 890-900.
  17. Parhizkar P, Mohammadi R, Hashami-Asl SM, et al. Comparison of the sedative and cardiovascular effects of the combination of acepromazine-clonidine versus acepromazine-xylazine in horses. Vet Res Forum 2024; 15(1): 21-26.
  18. Wu Y, Tobias AH, Bell K, et al. Cellular and molecular mechanisms of systolic and diastolic dysfunction in an avian model of dilated cardiomyopathy. J Mol Cell Cardiol 2004; 37(1): 111-119.
  19. Schwarzwald CC, Hamlin RL, Bonagura JD, et al. Atrial, SA nodal, and AV nodal electrophysiology in standing horses: normal findings and electrophysiologic effects of quinidine and diltiazem. J Vet Intern Med 2007; 21(1): 166-175.
  20. Walker M, Geiser Effects of acetylpromazine on the hemodynamics of the equine metatarsal artery, as determined by two-dimensional real-time and pulsed Doppler ultrasonography. Am J Vet Res 1986; 47(5): 1075-1078.
  21. Muir WW 3rd, Mason DE. Effects of diazepam, acepromazine, detomidine, and xylazine on thiamylal anesthesia in horses. J Am Vet Med Assoc 1993; 203(7): 1031-1038.
  22. Menzies-Gow NJ. Effects of sedation with acepromazine on echocardiographic measurements in eight healthy thoroughbred horses. Vet Rec 2008; 163(1): 21-25.
  23. MacKenzie G, Snow DH. An evaluation of chemical restraining agents in the horse. Vet Rec 1977; 101(2): 30-33.
  24. Parry BW, Anderson GA, Gay CC. Hypotension in the horse induced by acepromazine maleate. Aust Vet J 1982; 59(5): 148-152.
  25. Muir WW, Skarda RT, Sheehan W. Hemodynamic and respiratory effects of a xylazine-acetylpromazine drug combination in horses. Am J Vet Res 1979; 40(11): 1518-1522.
Volume 15, Issue 6
June 2024
Pages 291-296

  • Receive Date 11 October 2023
  • Revise Date 16 December 2023
  • Accept Date 08 January 2024