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血压中的舒张压过低,是引起痴呆的一种危险因素,不过这种危险因素却是可防、可控的。老年高血压有其特殊性,即收缩压会随着年龄增加而不断增高,而舒张压会随着年龄增加变得正常甚至偏低。舒张压的理想值是小于80mmHg,对于老人来说,舒张压不能低于70mmHg。70mmHg是警戒线,60mmHg是危险线。研究发现,如果舒张压升高10mmHg,痴呆的发生率将会降低13%;如果舒张压降低10mmHg,智力将会下降34%。
Diastolic blood pressure is too low, is a risk factor for dementia, but this risk factor is preventable and controllable. Elderly hypertension has its own particularity, that systolic blood pressure will increase with age, and diastolic blood pressure will become normal with age or even lower. Ideal diastolic blood pressure is less than 80mmHg, for the elderly, diastolic blood pressure can not be less than 70mmHg. 70mmHg is a warning line, 60mmHg is a dangerous line. The study found that if the diastolic blood pressure increased by 10mmHg, the incidence of dementia will be reduced by 13%; if the diastolic blood pressure decreased 10mmHg, intelligence will drop by 34%.