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用食管心房调搏术并结合药物阻滞法检测心动过缓，判定窦房结功能结果提示：病态窦房结以老年人居多，４５岁以下窦性心动过缓者绝大部份为“迷走神经张力过高”用食管心底调搏术且能发现在普通心电图上不能发现的心律失常．
Esophageal pacing with esophageal atrial fibrillation combined with drug blockade detection of bradycardia, determine the function of the sinus node results suggest that: the prevalence of sick sinus node in the elderly mostly below 45 years of age sinus bradycardia most of the vagus nerve Tension too high "with esophageal heart beating heart surgery and can be found in ordinary ECG can not find arrhythmia.