充血性心力衰竭是指由于某些原因使心肌收缩力减退,导致静脉系统瘀血和动脉系统灌注不足,因而产生一系列的临床症状和体征。Ⅰ.调节心脏功能的主要因素一、前负荷(容量负荷):指心脏收缩以前心肌伸展到一定的程度所承受的肌张力。以心室舒张末期压和心室舒张末期容量来表示。右室前负荷加重见于大量左向右分流的先天性心脏病以及快速大量的静脉 Congestive heart failure is due to some reasons, decreased myocardial contractility, resulting in venous system bleeding and arterial system insufficiency, resulting in a series of clinical symptoms and signs. Ⅰ. The main factors regulating cardiac function First, the front load (capacity load): refers to the heart before myocardial contraction to a certain extent to bear the muscle tension. To ventricular end-diastolic pressure and ventricular end-diastolic volume to that. Right ventricular anterior load increase seen in a large number of left to right shunt congenital heart disease and a large number of rapid intravenous