《急诊每日一题》心肌梗塞后急性二尖瓣返流2021年10月
Question 问题:
Acute MR, a life-threatening complication of MI, is a cardiac emergency as it presents with sudden onset flash pulmonary edema, hypotension, and cardiogenic shock. Does the lack of murmur essentially exclude the diagnosis? Why?
急性二尖瓣返流(MR),急性心梗危机生命并发症,是表现为突发性严重肺水肿,低血压,和心源性休克的心脏急诊。没有杂音可以排除这个诊断吗?为什么?
Answer 答案:
50% of patients with acute moderate to severe MR hAVe no audible murmur. Severe MR may be silent because reduced ventricular function minimizes the AV gradient, regurgitant flow, and subsequent murmur.
50%中度到重度MR患者没有可听到的杂音。由于降低的心室功能限制了房室压差,返流流速,和既而产生的杂音,因此严重MR可以无杂音的。
参考文献:
Cureus. 2021;13:e13996