Cover American Journal of Veterinary Research
American Journal of Veterinary Research
ISSN:
0002-9645
Publication Date:
01 Feb 2007
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Editorial Type:
Cardiovascular System

Cardiac evaluation of anesthetized Grevy's zebras (Equus grevyi)

Darcy B. Adin DVM1, Herbert W. Maisenbacher VMD2, Nyurka Ojeda DVM3, Christine V. Fiorello DVM, PhD4,5, Amara H. Estrada DVM6, Robert Prosek DVM, MS7, and Scott B. Citino DVM8
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  • 1 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610.
  • | 2 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610.
  • | 3 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610.
  • | 4 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610.
  • | 5 White Oak Conservation Center, 581705 White Oak Rd, Yulee, FL 32097.
  • | 6 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610.
  • | 7 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610.
  • | 8 White Oak Conservation Center, 581705 White Oak Rd, Yulee, FL 32097.
DOI:
https://doi.org/10.2460/ajvr.68.2.148
Volume/Issue:
Volume 68: Issue 2
Online Publication Date:
01 Feb 2007
Restricted access
Reprints and Permissions Purchase Article

Abstract

Objective—To determine ECG and echocardiographic measurements in healthy anesthetized Grevy's zebras (Equus grevyi).

Animals—20 healthy zebras.

Procedures—Auscultation, base-apex ECG, and echocardiography were performed on anesthetized zebras.

Results—Low-grade systolic murmurs were detected in the left basilar region in 4 of 20 zebras. Evaluation of ECGs from 19 zebras revealed sinus rhythm with a predominantly negative QRS complex and a mean ± SD heart rate of 67 ± 10 beats/min. Echocardiograms of sufficient image quality were obtained for 16 zebras. Interventricular septal thickness in diastole, left ventricular chamber in diastole and systole, left atrial diameter, and left ventricular mass were significantly and moderately correlated with estimated body weight (r values ranged from 0.650 to 0.884). Detectable swirling of blood in the right and sometimes the left ventricles was detected in 9 of 16 zebras, whereas physiologic regurgitation of blood was detected for the aortic valve in 3 zebras, pulmonary valve in 2 zebras, mitral valve in 2 zebras, and tricuspid valve in 1 zebra.

Conclusions and Clinical Relevance—Results of this study provide reference information for use in the cardiac evaluation of anesthetized Grevy's zebras.

Contributor Notes

Dr. Adin's present address is Veterinary Specialists of Rochester, 825 White Spruce Blvd, Rochester, NY 14623.

Dr. Ojeda's present address is Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.

Supported by Sound Technologies Inc.

This study was performed at the White Oak Conservation Center.

Address correspondence to Dr. Adin.