冬季的严寒是导致许多疾病的罪魁祸首,对于心血管疾病来说更是如此。由于机体受寒冷刺激,交感神经兴奋性增强,会使血压升高,心率增快,心脏工作量加大;寒冷还使体内儿茶酚胺类物质增多,会引起冠状动脉收缩。以上因素均可引起心肌缺血、缺氧,导致心绞痛等发作。寒冷使血液理化性质发生改变,如血液粘稠度增加,凝血时间缩短等,可引起冠状动脉血栓形成,导致心肌梗塞。临床资料显示,在有寒潮侵袭,气温骤降时,急 The cold winter is the culprit for many diseases, especially for cardiovascular disease. As the body is stimulated by cold, sympathetic excitability increased, will make blood pressure, heart rate increased, the workload of the heart; the body also causes increased catecholamines will cause coronary artery contraction. These factors can cause myocardial ischemia, hypoxia, lead to angina and other attacks. Cold physical and chemical properties of the blood changes, such as increased blood viscosity, clotting time shortened, can cause coronary artery thrombosis, leading to myocardial infarction. Clinical data show that in the cold invasion, the temperature plunged, urgent