Methods RVEF was assessed in 118 consecutive aged patients before pulmomary resection by echocardiography, 64 of whom received RVEF measurement again 3 weeks after operation.

• 方法 应用超声心动图连续对 118例高龄接受肺切除术的病人行术前RVEF测定 ,并对其中 64例于术后 3周再测定RVEF。