The full form of MER in medical term is Mean Ejection Rate.
Mean ejection rate (MER), a physiological indicator, is used to evaluate how well the heart works. It is described as the amount of blood the heart’s left ventricle pumps out in a certain amount of time, usually expressed in millilitres per minute (mL/min). The MER is a crucial measure for assessing cardiac output, or how much blood the heart pumps in a minute.
Thermodilution techniques, echocardiography and cardiac magnetic resonance imaging (MRI) are some of the procedures used to measure the MER.
Measuring the MER may constitute a crucial diagnostic tool for assessing heart function and spotting probable cardiac problems. It may also track how well certain cardiac issues are being treated.
The MER typically falls within 50 to 100 mL/min/m2. Yet, this may differ based on several variables, such as age, body size, sex, and general health. Reduced cardiac output, which can be brought on by several diseases such as heart failure, valvular heart disease, myocardial infarction, and cardiomyopathy, may be indicated by a lower MER. On the other hand, a larger MER can signify increased cardiac output, which can happen during exercise or in reaction to some drugs.