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Related Experiment Videos

M-mode echocardiographic values in sheep.

B L Moses1, J N Ross

  • 1Department of Medicine, Tufts University School of Veterinary Medicine, North Grafton, MA 01536.

American Journal of Veterinary Research
|September 1, 1987
PubMed
Summary
This summary is machine-generated.

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Echocardiograms in adult sheep revealed significant correlations between body weight and cardiac dimensions, as well as heart rate and various cardiac function parameters. These findings establish key relationships for sheep cardiovascular research.

Area of Science:

  • Cardiovascular Physiology
  • Veterinary Echocardiography
  • Comparative Cardiology

Background:

  • Echocardiography is a vital non-invasive tool for assessing cardiac structure and function.
  • Establishing reference ranges and correlations in animal models is crucial for understanding cardiovascular health and disease.
  • Sheep serve as a valuable model for cardiovascular research due to physiological similarities with humans.

Purpose of the Study:

  • To investigate the relationship between body weight and echocardiographic measurements in adult sheep.
  • To determine the correlation between heart rate and various echocardiographic parameters in this population.
  • To provide baseline data for future cardiovascular studies utilizing sheep models.

Main Methods:

  • M-mode echocardiograms were acquired from 21 adult sheep.

Related Experiment Videos

  • Fifteen echocardiographic measurements were systematically recorded.
  • Linear regression analysis was employed to compare measurements with body weight and heart rate.

    • Main Results:

    • Significant correlations were observed between body weight and left ventricular dimensions (systole/diastole), septal thickness (systole/diastole), aortic root dimension, and left atrial dimension (P < 0.05).
    • Heart rate showed significant correlations with body weight, ejection time, velocity of circumferential fiber shortening, mean velocity of mitral valve middiastolic closure, and left atrial dimension (P < 0.05).
    • Mean fractional shortening of the left ventricle was 37.2 ± 5.7%, and the left atrial to aortic root ratio was 0.92 ± 0.10.

    Conclusions:

    • Body weight is a significant predictor of cardiac dimensions in adult sheep.
    • Heart rate is significantly associated with several echocardiographic parameters reflecting cardiac function and dimensions.
    • These established correlations provide valuable reference data for echocardiographic assessments in sheep.