本文选择了12例各种心脏病患者,观察其饮用一杯含有140毫克咖啡因的浓茶后,所发生的血液动力学改变。结果表明:平均心脏指数由2.52增加至2.99升/分/平方米(P<0.01);平均搏出指数由30增加到36毫升/搏/平方米(P<0.05)。心脏指数的增加完全是搏出指数增加的结果,因为平均心率并无改变。动—静脉氧差由5.7增加到6.2容积％(P<0.05);耗氧量亦显著加大,由135增高至173升/分/平方米(P<0.001)。 In this paper, 12 patients with various heart diseases were selected and their hemodynamic changes were observed after drinking a cup of strong tea containing 140 mg of caffeine. The results showed that the average cardiac index increased from 2.52 to 2.99 l / min / m2 (P <0.01), and the mean stroke index increased from 30 to 36 ml / m (P <0.05). The increase in heart index is simply the result of an increase in bout index, as the average heart rate does not change. The arterial-venous oxygen dif- ference increased from 5.7 to 6.2% (P <0.05), and the oxygen consumption increased significantly from 135 to 173 l / min / m2 (P <0.001).