Cardiology MCQ 334: Myocardial performance index

Myocardial performance index is:
a) Ratio of end diastolic volume to end systolic volume
b) Ratio of stroke volume to end diastolic volume
c) Ratio of the time spent in isovolumetric activity to ventricular ejection
d) Ratio of time spent in systole to time spent in diastole

["Click here for the answer with explanation", "Correct Answer:"]

c) Ratio of the time spent in isovolumetric activity to ventricular ejection

Myocardial performance index (MPI) is the ratio of the time spent in isovolumetric activity divided by the time spent in ventricular ejection.
MPI = (ICT + IRT) / ET
ICT: isovolumic contraction time; IRT: isovolumic relaxation time; ET: ejection time. Read more…

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Source: Cardiophile MD - October 4, 2014 Category: Cardiology Authors: Prof. Dr. Johnson Francis MD, DM, FACC, FRCP Edin, FRCP London Tags: Cardiology MCQ DM / DNB Cardiology Entrance Source Type: blogs