Value of the New Spline QTc Formula in Adjusting for Pacing-Induced Changes in Heart Rate

<div>The relationship during ventricular pacing between the QTc for the Bazett versus new spline formulae for pacing rate (RR) interval on (a) and expressed as heart rate on (b). The data are shown for the Bazett JT, Spline JT (derived by calculating the QTc and subtracting the measured QRS duration), and the measured JT.</div>

Cardiology Research and Practice

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Figure 5

Figure 5: Value of the New Spline QTc Formula in Adjusting for Pacing-Induced Changes in Heart Rate 