Indexes and significance of evaluating heart pump function.

Answer: The evaluation indexes of cardiac pump function include: stroke output, ejection fraction, output per minute (cardiac output), cardiac index and cardiac work (stroke work and work per minute). Among them, the stroke output is the most basic index; Ejection fraction and output per minute are more comprehensive than stroke output; The cardiac index can be compared between different individuals. Cardiac work not only considers the ejection volume, but also considers the influence of afterload and other factors, so it evaluates cardiac function more comprehensively than cardiac output. In addition, the heart reserve can reflect the health of the heart and can also be used as an index to evaluate the function of the heart pump.