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Severe arrhythmias can trigger atrial fibrillation or ventricular fibrillation .

严重的心律失常可引起心房纤颤或心室纤颤。

Feb. 27 , 2012 -- atrial fibrillation ( af ) , an irregular heart rhythm , is known to increase a person 's risk of stroke .

2012，2，27-心房纤颤（af），一种不规则的心脏节律，众所周知能增加一个人中风的危险。

Role of echocardiography in patients undergoing elective cardioversion of atrial fibrillation .

超声心动图对做择期房颤转复病人的作用。

Role of echocardiography in interventional therapy of secundum atrial septal defect .

超声心动图在房间隔缺损介入治疗中的应用。

The researchers reported a link between silent stroke and a condition called atrial fibrillation .

研究报道隐性中风和一种名为心房纤维颤动的疾病之间的联系。