该组16个患者,由临床和放射学证明为左室衰竭。静脉注射肼苯哒嗪20mg后,56％的患者心排出量增加,27％的患者左室充盈压降低。16％的患者平均动脉压降低,而心率没有明显的变化;7人口服,每日200至300毫克,时间4至6周。口服后71％的患者心排出量增加,75％的患者左室充盈压降 The group of 16 patients, clinically and radiologically proven to be left ventricular failure. Intravenous injection hydralazine 20mg, 56% of patients with cardiac output increased, 27% of patients with left ventricular filling pressure decreased. Mean arterial pressure was decreased in 16% of patients without any significant change in heart rate; 7 were orally administered daily at 200 to 300 mg for 4 to 6 weeks. 71% of patients after oral administration of cardiac output increased, 75% of patients with left ventricular filling pressure drop