心脏除电机械功能以外,还具有内分泌功能,用于调节血管张力和水盐平衡。心脏结构或者前后负荷的改变影响局部甚至整体心脏功能,但整体心脏无论收缩还是舒张功能都具有相当的储备,损害到一定程度后才会导致射血分数(EF值)下降或者心室舒张末压升高;即便客观检查已经出现心功能不 In addition to the heart mechanical function, but also has endocrine function, used to regulate vascular tension and water and salt balance. Changes in cardiac structure or anterior-posterior load affect local and even global cardiac function, but there is considerable reserve for the global heart, whether systolic or diastolic, and to a lesser degree results in decreased ejection fraction (EF) or end-diastolic pressure High; even if the objective examination has appeared cardiac function does not