心力衰竭患者的临床表现主要是四肢无力,不能从事重体力活动,下肢出现明显水肿。心力衰竭会导致心脏射血功能受损及心脏充盈,心脏射血量严重不足。心脏射血的减少会引发机体代谢功能得不到满足,全身脏器得不到充足的血液,常出现淤血症状。调查发现,发达国家中心力衰竭的发病率在1%~2%之间,年龄越大发病率越高,70岁以上的老人发病率可达10%以上。我国心力衰竭发病率为0.9%,据此推断,我国应 The clinical manifestations of patients with heart failure mainly limb weakness, can not engage in heavy physical activity, lower extremity obvious edema. Heart failure can lead to impaired ejection of the heart and filling of the heart, resulting in a severe lack of cardiac ejection. Cardiac ejection loss will lead to the body’s metabolic function can not be met, the body organs can not get enough blood, often congestion symptoms. The survey found that the incidence of failure in developed countries center between 1% to 2%, the older the higher the incidence, the incidence of the elderly over the age of 70 up to 10%. The incidence of heart failure in our country is 0.9%. Therefore, we should conclude that our country should