心脏的主要功能是通过不断的收缩和舒张以保持正常的血液循环。心力衰竭是指心脏的功能减退,排血量不能应付机体活动的需要的一种病理状态,又称为心功能不全。它不是一种独立的疾病,而是各种心脏病的晚期合并症或最终结局。患者常出现心跳及脉搏增快,活动后咳喘、气促、呼吸困难,口唇紫绀,恶心,呕 The main function of the heart is to maintain normal blood circulation through constant contraction and relaxation. Heart failure refers to the decline of the heart, blood volume can not cope with the needs of the body’s activity of a pathological state, also known as cardiac insufficiency. It is not an independent disease, but a late comorbid or final outcome of a variety of heart conditions. Patients often appear heartbeat and pulse faster, cough and wheezing after activity, shortness of breath, difficulty breathing, cyanosis of lips, nausea and vomiting