患者男性,93岁。于2003年6月2日因右侧结核性胸膜炎、心功能不全入院治疗。住院期间发生频发室性期前收缩,给予口服慢心律100 mg,每天4次治疗,第2天出现双下肢震颤,肌张力增高;以后震颤逐渐加重,至用药第7天渐发展至双下肢不能行走。颅脑MRI检查示脑萎缩。考虑可能为慢心律的副 Male patient, 93 years old. On June 2, 2003 due to the right side of tuberculous pleurisy, cardiac insufficiency hospitalized. Frequent ventricular contraction occurred during hospitalization, given oral slow heart rate 100 mg, 4 times a day treatment, the second day appeared in both lower extremities tremor, increased muscle tone; tremor gradually aggravated until the seventh day of medication gradually developed to double lower extremities Can not walk. Brain MRI showed brain atrophy. Consider a vice-pacemaker that may be slow