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动态心电图监测表明,即使在积极内科治疗下,仍有半数以上不稳定型心绞痛患者存在隐匿性心肌缺血;隐匿性心肌缺血及其程度则同近期(1个月内)预后不良(包括死亡、心肌梗塞和须作冠脉重建术)相关。具有可能引起ST段移位的其它原因的患者已经除外,70例不稳定型心绞痛患者收入冠心病监护病房后联合应用长效硝酸酯、普萘洛尔(160mg/d)和硝苯啶(80mg/d),随即连续记录48hr动态心电图,作为分组的依据。A组37例出现心肌缺血(J点后0.08s处ST段压低或抬高≥1mm持续至少1min),48hr内平均5.5次,每次平均持续(中位数)
Holter monitoring showed that more than half of patients with unstable angina still present with occult myocardial ischemia even under active medical therapy; occult myocardial ischemia and its extent are similar to those of the recent (within one month) poor prognosis (including death , Myocardial infarction and coronary artery reconstruction required). With the exception of patients with other causes of ST-segment translocation, 70 patients with unstable angina were admitted to the coronary care unit with long-acting nitrates, propranolol (160 mg / d) and nifedipine (80 mg / d), then continuous recording 48hr Holter, as a basis for grouping. A group of 37 cases of myocardial ischemia (J 0.08s after ST segment depression or elevation ≥ 1mm sustained at least 1min), 48hr average of 5.5 times, each time on average (median)