Doi Y L, Sugiura T, Spodick D H
Chest. 1981 Oct;80(4):513-5. doi: 10.1378/chest.80.4.513.
Extreme respiratory variation in the depth of the "a" wave of the pulmonic valve echo was demonstrated in a patient with constrictive pericarditis; a mechanism for this finding is offered. Disparity in systolic and diastolic ventricular function in constriction is also useful in ruling out restrictive cardiomyopathy.
在一名缩窄性心包炎患者中，发现肺动脉瓣回声“a”波深度存在显著呼吸变化，并提出了对此发现的一种机制。缩窄时收缩期和舒张期心室功能的差异也有助于排除限制性心肌病。
