Pulsed wave Doppler echocardiographic evaluation of intracardiac blood flow in normal sheep

doi:10.1016/0034-5288(93)90080-Y

Research in Veterinary Science

Volume 55, Issue 2, September 1993, Pages 189-194

https://doi.org/10.1016/0034-5288(93)90080-Y Get rights and content

Abstract

The blood flow velocities and flow patterns were evaluated in normal sheep across the four cardiac valves using pulsed wave spectral Doppler echocardiography. Merino ewes (n=20) aged between 16 and 61 months with bodyweights ranging between 51 to 72 kg were evaluated. The sheep were fully conscious and required no sedation. The mean peak velocities for the left atrioventricular, right atrioventricular, aortic and pulmonary valves were 68·4, 51·9, 99·1 and 92·7 cm s⁻¹, respectively. Additionally the wave forms were described and mean velocities and a variety of flow variables determined for each of these flow areas. The mean left atrioventricular valve E:A ratio was under 1 which differs from humans and dogs. Aortic and pulmonary flow variables were compared to each other.

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Citation Excerpt :
This parametre is used to assess ventricular diastolic function (Appleton et al., 1988); its reference value is considered to be always > 1 in humans and dogs (Feigenbaum, 1986; Kirberger and Van Den Berg., 1993). In contrast, E:A ratio for the tricuspid valve was similar to that found in the dog (Kirberger and Van Den Berg., 1993), i.e. >1. Doppler derived echocardiographic values for all four cardiac valves are in Table 3.
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Pulsed wave Doppler echocardiographic evaluation of intracardiac blood flow in normal sheep

Abstract

Journal of the American College of Cardiology

Journal of the American College of Cardiology

American Journal of Cardiology

Use of pulsed-wave Doppler echocardiography to determine aortic and pulmonary velocity and flow variables in clinically normal dogs

American Journal of Veterinary Research

Echocardiography

The effect of variations on pulsed Doppler sampling site on calculation of cardiac output: An experimental study on open chest dogs

Circulation

Doppler Echocardiography

Prediction of pulmonary arterial pressure in adults by pulsed Doppler echocardiography

American Journal of Cardiology

Doppler echocardiography: Facts and physics for practitioners

Compendium on Continuing Education for the Practicing Veterinarian