站立对心室并行心律的影响：并行心律周期长度缩短。
Effect of standing on ventricular parasystole: shortening of the parasystolic cycle length.
作者信息
Kinoshita S, Mitsuoka T
机构信息
Health Administration Centre, Hokkaido University, Sapporo, Japan.
出版信息
Heart. 1997 Feb;77(2):133-7. doi: 10.1136/hrt.77.2.133.
OBJECTIVE
To investigate the effect of standing on the parasystolic cycle length in cases of "true" ventricular parasystole.
METHODS
Parasystolic cycle length and sinus cycle length were measured during lying and standing in eight men with true ventricular parasystole. These cycle lengths were also measured after exercise in the lying position.
RESULTS
In all cases, parasystolic cycle length and sinus cycle length both shortened on standing, by a mean of 6.4% and 17.8%, respectively, compared to lying. In all cases, the rate of shortening of the parasystolic cycle length was less than that of the sinus cycle length. Parasystolic cycle length was prolonged after exercise, in contrast to a shortening of the sinus cycle length.
CONCLUSIONS
Influences on the parasystolic cycle length are not always in the same direction as on the sinus cycle length. This suggests that the effect of autonomic changes on parasystolic rhythm is not always parallel to that on sinus rhythm.
目的
研究站立对“真性”心室并行心律患者并行心律周期长度的影响。
方法
对8例真性心室并行心律男性患者在卧位和站立位时测量并行心律周期长度和窦性周期长度。这些周期长度也在卧位运动后进行测量。
结果
在所有病例中，与卧位相比，站立时并行心律周期长度和窦性周期长度均缩短，平均分别缩短6.4%和17.8%。在所有病例中，并行心律周期长度的缩短率小于窦性周期长度的缩短率。与窦性周期长度缩短相反，运动后并行心律周期长度延长。
结论
对并行心律周期长度的影响并不总是与对窦性周期长度的影响方向相同。这表明自主神经变化对并行心律的影响并不总是与对窦性心律的影响平行。
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