体位性心律失常,临床多见于卧位性P—R延长.本院近日见到2例,左侧卧位出现房早、房速,其原因可能当侧卧位时胸腔脏器向左侧移位,右侧迷走神经受到的牵引力相对较大,张力增高。左侧迷走神经受到的牵引力相对减小,张力偏低.体位改变致心肌兴奋性及不应期皆有所影响而致心律失常. 例1 患者,男性,30岁,工人.主诉:胸 Positional arrhythmia, clinical more common in the recumbent P-R prolongation in our hospital recently seen in 2 cases, the left lateral position atrial premature beats, atrial tachycardia, the reason may be when the lateral position of the left chest thoracic shift Bit, the right side of the vagus nerve traction is relatively large, increased tension. The left vagus nerve is relatively reduced traction, tension is low.Changes in position caused by cardiac excitability and refractory period are both caused by arrhythmia.Examples 1 patients, men, 30 years old, workers.