脉压 (pulsepressure ,PP)即收缩压 (SBP)与舒张压 (DBP)的差值 ,由心肌收缩力、心搏量 (strokevolume ,SV)、动脉系统的弹性所决定。SV为左室舒张末期容积与收缩末期容积的差值。一些临床基础实验表明 ,PP增大与动脉硬化、冠心病、心力衰竭的发生发展及心血管疾病病死率增加有 The difference between pulse pressure (PP), systolic blood pressure (SBP) and diastolic blood pressure (DBP), is determined by myocardial contractility, stroke volume (SV) and arterial system elasticity. SV is the difference between left ventricular end-diastolic volume and end-systolic volume. Some clinical basic experiments show that increased PP and atherosclerosis, coronary heart disease, heart failure and the development of cardiovascular disease mortality and increased