慢性阻塞性呼吸道疾病患者的左心功能是否正常这个问题仍有争论。本文作者用113m铟法在慢性阻塞性肺病并发急性呼吸衰竭患者92例及临床稳定状态患者28例测定了左室射血比数(LVEF)。在28例稳定状态患者用靛氰绿染料法测定心排出量,由心排出量与心率计算心搏量,由LVEF与左室心搏量(LVSV)计算左室舒张末期血量(LVEDV),再由病人的体表面积计算心指数,心搏量指数及LVEDV指数。 28例稳定患者LVEF平均为52±2.1％(正常≥55％)。12例LVEF大于55％,6例小于40％。28例中7例临床证实有冠心病者LVEF平均为42±3.5％,与21例临床无冠心病者之LVEF(56±2.1％)相比有 The issue of whether left heart function is normal in patients with chronic obstructive airway disease is still debated. The authors used a 113-m Indium method to measure left ventricular ejection fraction (LVEF) in 92 patients with chronic obstructive pulmonary disease and acute respiratory failure and 28 patients with clinically stable conditions. The cardiac output was determined by the indocyanine green dye method in 28 patients with stable state. The stroke volume was calculated from the cardiac output and heart rate. The left ventricular end-diastolic blood volume (LVEDV) was calculated from LVEF and left ventricular stroke volume (LVSV) From the patient’s body surface area calculation of cardiac index, stroke volume index and LVEDV index. The average LVEF in 28 stable patients was 52 ± 2.1% (normal ≥55%). 12 cases of LVEF greater than 55%, 6 cases less than 40%. Of the 28 cases, LVEF was found in 7 of the clinically confirmed cases with coronary heart disease, with an average of 42 ± 3.5%, compared with LVEF (56 ± 2.1%) in 21 patients without coronary heart disease