背景:慢性并存疾病是ST段抬高型心肌梗死(STEMI)的预后决定因素。本研究旨在确定这种影响是否与治疗措施无关,抑或由治疗措施的不同而引起,及二者相关程度如何。方法:740例发病12h内住院的STEMI患者入选一项基于人群的注册研究,实施该研究的卫生医疗区域内有1所具有经皮冠状动脉介入(PCI)设施的教学医院和5所不具有PCI设施的地区医院。 BACKGROUND: Chronic co-morbidity is a prognostic determinant of ST-segment elevation myocardial infarction (STEMI). The purpose of this study was to determine whether this effect was related to treatment or not, and whether the effect was due to the difference in treatment and how relevant the two were. METHODS: One hundred and seventy-four STEMI patients admitted to hospital within 12 hours of onset of disease were enrolled in a population-based enrollment study. There were 1 teaching hospitals with percutaneous coronary intervention (PCI) facilities in the health-care area and 5 non- Regional Hospital for Facilities.