Abel F L
Am J Physiol. 1981 Apr;240(4):H676-9. doi: 10.1152/ajpheart.1981.240.4.H676.
The maximal negative peak of the first derivative of left ventricular pressure was examined as an index of the end of ventricular ejection by comparing it with the end of aortic flow. Under varying heart rate and afterload situations in anesthetized dogs, a correlation coefficient of 0.982 was obtained with a mean error of less than 0.4 ms. This may be a useful end point for determining systolic time where only ventricular pressure is available.
通过将左心室压力一阶导数的最大负峰与主动脉血流结束时间进行比较，以此作为心室射血结束的指标。在麻醉犬的不同心率和后负荷情况下，得到的相关系数为0.982，平均误差小于0.4毫秒。对于仅能获取心室压力的情况，这可能是确定收缩期时间的一个有用终点。
