左室舒张功能障碍指左室舒张期的压力与容量相关发生变化，在并无代偿性左房压升高的情况下，左室已不能正常充盈纳血，即在相等的左室容量下，腔内舒张压比正常时明显增加。据统计，约有3O％～40％的充血性心力衰竭[CHF]患者其收缩功能正常，而主要表现为舒张功能不全，对这类 Left ventricular diastolic dysfunction refers to changes in left ventricular diastolic pressure and volume changes in the absence of compensatory left atrial pressure, the left ventricle has not fully filled with blood, that is equal in the left ventricular volume , Lumen diastolic pressure increased significantly than normal. According to statistics, about 30% to 40% of congestive heart failure [CHF] patients with normal contractility, but mainly for diastolic dysfunction, this type