随着基础和动态血压监测研究的不断深入，使医务工作者认识到血压幅度不但与靶器官损害有直接关系；即血压越高，今后发生脑卒中。充血性心力衰竭、肾功能损害及心肌梗死的发生率越高，而且还发现24小时血压值与靶器官损害有直接关连；24小时血压变异程度、夜间血压水平和昼夜2 With the deepening of basic and ambulatory blood pressure monitoring research, medical workers recognize that the blood pressure amplitude is not only directly related to target organ damage; that is, the higher the blood pressure, the future occurrence of stroke. Congestive heart failure, renal dysfunction and myocardial infarction, the higher the incidence, but also found that 24-hour blood pressure and target organ damage are directly related to 24-hour blood pressure variability, nighttime blood pressure levels and day and night 2