心房音此时不能听到，因为二尖瓣狭窄阻止左心房突然排空。
An atrial sound is not heard in this condition because mitral valve narrowing prevents sudden emptying of the left atrium.
方法采用临床上常用的柯氏音法与改良方法，分别测量69例男性心房颤动患者发作期的左上臂血压，并根据房颤时各自特点进行分组比较。
Methods Korotkoff sound method and modified method were performed in 69 male patients to respectively take blood pressure of left upper arm during atrial fibrillation.
方法采用临床上常用的柯氏音法与改良方法，分别测量69例男性心房颤动患者发作期的左上臂血压，并根据房颤时各自特点进行分组比较。
Methods Korotkoff sound method and modified method were performed in 69 male patients to respectively take blood pressure of left upper arm during atrial fibrillation.
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