Cardiology Question 21 Instructor

What is the formula for correcting the QT interval for heart rates?

QTc = QT / √RR

After adjustment for heart rate using the Bazett formula, the corrected QT interval (QTc) is considered prolonged if it is more than 440 msec in men and 460 msec in women.

Bazett HC. An analysis of the time-relations of electrocardiograms. Heart 7:353, 1920.

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