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心肌功能异常可以是心力衰竭发病机制的表现,也可以是代偿机制的表现.在心肌病和缺血性心脏病人,心肌功能改变是心力衰竭的根本原因.心肌收缩性的改变也可以是心脏对慢性负荷过重的反应,如主动脉瓣狭窄时的压力负荷过重或主动脉瓣关闭不全时的容量负荷过重.这种心肌收缩性的继发性改变,在不同场合可改善或损害心脏应付负荷异常的能力.心肌功能的原发性和继发性改变,能对心肌的收缩期(收缩性)和舒张
Cardiac dysfunction can be the manifestation of the pathogenesis of heart failure, it can also be a manifestation of compensatory mechanisms in patients with cardiomyopathy and ischemic heart disease, myocardial function changes is the root cause of heart failure.Changes in myocardial contractility can also be the heart Responses to chronic overloading, such as overloading of the pressure overload during aortic stenosis or overloading of the aortic valve when the aortic valve regurgitation is incomplete, can be either improved or compromised on different occasions Cardiac capacity to deal with abnormal load. Primary and secondary changes in myocardial function, myocardial systolic (contractility) and diastolic