Hardarson T, Ziady G M, Khattri H N
Thorax. 1974 May;29(3):359-65. doi: 10.1136/thx.29.3.359.
, , 359-365. In a series of 15 patients with ischaemic heart disease, systolic time intervals (STI) were measured before, and at one week, three months, and six months following coronary vein-graft surgery. Preoperatively, the left ventricular ejection time (LVET) was abnormally short in seven patients, while the pre-ejection period was abnormally long in seven patients, suggesting impaired left ventricular function. At one week after surgery LVET and total electromechanical systole (QA2) were significantly abbreviated. This may be explained by the transient fall in cardiac output or postoperative neurohumoral changes. For the group as a whole, no significant changes were found at three or six months, suggesting that cardiac function was generally preserved rather than improved. However, in individual patients changes in STI correlated with the clinical and angiographic estimate of success of the operative treatment.
在一组15例缺血性心脏病患者中，于冠状动脉静脉搭桥手术前、术后1周、3个月和6个月测量收缩期时间间期（STI）。术前，7例患者左心室射血时间（LVET）异常缩短，7例患者射血前期异常延长，提示左心室功能受损。术后1周，LVET和总电机械收缩期（QA2）显著缩短。这可能是由于心输出量短暂下降或术后神经体液变化所致。对于整个组而言，3个月和6个月时未发现显著变化，提示心脏功能总体上得以保留而非改善。然而，在个别患者中，STI的变化与手术治疗成功的临床及血管造影评估相关。
