Supported by grant from the Deutscher Akademischer Austauschdienst, Bonn, Germany.
PULMONARY VENOUS FLOW CHARACTERISTICS AS ASSESSED BY TRANSTHORACIC PULSED DOPPLER ECHOCARDIOGRAPHY IN NORMAL DOGS
Article first published online: 23 MAY 2005
Veterinary Radiology & Ultrasound
Volume 39, Issue 1, pages 33–41, January 1998
How to Cite
Schober, K. E., Fuentes, V. L., Mcewan, J. D. and French, A. T. (1998), PULMONARY VENOUS FLOW CHARACTERISTICS AS ASSESSED BY TRANSTHORACIC PULSED DOPPLER ECHOCARDIOGRAPHY IN NORMAL DOGS. Veterinary Radiology & Ultrasound, 39: 33–41. doi: 10.1111/j.1740-8261.1998.tb00322.x
- Issue published online: 23 MAY 2005
- Article first published online: 23 MAY 2005
- Received May 1, 1996; accepted for publication January 27, 1997.
- pulmonary venous flow;
- mitral inflow;
- diastolic function;
Transthoracic Doppler echocardiography was used to evaluate the technique of measuring and normal patterns of pulmonary venous flow in fourteen normal dogs. Polyphasic pulmonary venous flow profiles were obtained in all dogs, consisting of one (S) or two (SE and SL) systolic forward flow waves, one early diastolic forward flow wave (D), one reverse flow wave (R) related to atrial contraction, and one reverse flow wave (R2) observed after cessation of systolic flow. Pulmonary venous flow was laminar in 9 dogs (65%). Maximal flow velocity during systole (0.39 ± 0.14 m/sec) was significantly lower (P < 0.01) than in early diastole (0.56 ± 0.14 m/sec). During late diastole peak flow velocity was 0.20 ± 0.08 m/sec and maximum R2 velocity was 0.17 ± 0.05 m/sec. Duration of mitral A-wave was significantly greater (P < 0.05) than R-wave duration in all dogs (0.075 ± 0.10 vs 0.058 ± 0.012 sec). These results can be used for comparison with patterns found in disease states.