在冬季,最令人担心的就是患高血压的老年人。这是因为,低温可使体表血管弹性降低,外周阻力增加,使血压升高,进而导致脑血管破裂出血(即中风)。寒冷的刺激还可使交感神经兴奋,肾上腺皮质激素分泌增多,从而使小动脉痉挛收缩,增加外周阻力,使血压升高。因此,高血压病人在冬季要注意做好自我保健,预防中风发生。 In winter, the most worrying is the elderly with hypertension. This is because hypothermia can reduce the body surface elasticity of blood vessels, peripheral resistance increased, so that blood pressure, which led to rupture of cerebrovascular bleeding (stroke). Cold stimulation can also sympathetic excitement, increased secretion of adrenal cortex hormones, so that small artery spasm contraction, increased peripheral resistance, blood pressure. Therefore, hypertensive patients in the winter should pay attention to self-care, prevention of stroke.