Pressure oscillations were transmitted with less loss from the pulmonary artery to the occluded lobar pulmonary vein than from the pulmonary vein to the occluded lobar pulmonary artery.
Observational
Does the direction of pressure wave transmission affect the loss of pressure oscillations in the pulmonary circulation of patients without pulmonary hypertension?
Asymmetric pressure wave transmission in the pulmonary circulation, likely due to compliance differences, provides a physiological basis for analyzing arterial and wedge pressure oscillations.
In patients without pulmonary hypertension, studied at thoracotomy, pressure oscillations were transmitted with less loss from pulmonary artery to occluded lobar pulmonary vein than from pulmonary vein to occluded lobar pulmonary artery. Theory suggests that the asymmetry is mainly due to inequality of pulmonary arterial and venous compliance. The theory provides a basis for analysing the effects of pulmonary arterial and venous compliance on arterial and “wedge” pressure oscillations.
G. et al. (Sun,) conducted a observational in Without pulmonary hypertension. Pressure wave transmission from pulmonary artery to occluded lobar pulmonary vein vs. Transmission from pulmonary vein to occluded lobar pulmonary artery was evaluated on Pressure oscillation transmission loss. Pressure oscillations were transmitted with less loss from the pulmonary artery to the occluded lobar pulmonary vein than from the pulmonary vein to the occluded lobar pulmonary artery.