Key result
Negative right ventricular diastolic pressure was observed in all 11 patients immediately after pulmonary valvotomy, with lower pressures correlating with greater right ventricular hypertrophy.
Why the study?
Does operation for relief of isolated pulmonary valve stenosis result in negative right ventricular diastolic pressure?
Observational (n=11)
Does operation for relief of isolated pulmonary valve stenosis result in negative right ventricular diastolic pressure?
Negative right ventricular diastolic pressure is a common physiological phenomenon immediately after pulmonary valvotomy, likely resulting from hypercontraction of the hypertrophied right ventricle, and may be eliminated by fluid administration.
The phenomenon of negative right ventricular diastolic pressure immediately after operation for relief of isolated pulmonary valve stenosis was investigated in 11 patients. Pressures in the right ventricle and pulmonary artery were measured with a catheter tip micromanometer. One patient had a negative right ventricular diastolic pressure before operation. At the end of operation right ventricular diastolic pressure was negative in all 11 patients. The greater the right ventricular hypertrophy, the lower were these diastolic pressures. Negative right ventricular diastolic pressure is thus common in patients after pulmonary valvotomy, but fluid administration may eliminate it. Negative right ventricular diastolic pressure may be the result of hypercontraction and reduced volume of the hypertrophied right ventricle after relief of right ventricular outflow tract obstruction.
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Mohr et al. (1986) conducted an observational in Isolated pulmonary valve stenosis (n=11). Pulmonary valvotomy vs. Pre-operative state was evaluated on Negative right ventricular diastolic pressure. Negative right ventricular diastolic pressure was observed in all 11 patients immediately after pulmonary valvotomy, with lower pressures correlating with greater right ventricular hypertrophy.
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