dP/dt is a signal derived from pressure, typically ventricular blood pressure, that indicates the change in pressure over time.


Measured ventricular pressure provides an indication of the contractility or relaxation of the ventricles of a heart. In this way, the derivative of pressure over time (dP/dt) provides a biphasic signal that can be used to evaluate acute directional changes of contractility. Statistical measures of dP/dt, such as the mean, maximum, minimum, time to dP/dt maximum or minimum are often extracted and analyzed.

dP/dt Maximum (peak dP/dt) is one of the oldest measures of left ventricular global contractility and is a good index of ventricular performance that is not influenced by afterload, wall motion abnormalities, or the variations in ventricular anatomy and morphology.

Time to dP/dt Maximum is a useful index for evaluating and comparing contractility between multiple subjects.

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