Key result
Simple patient-specific modeling accurately captures QT hysteresis during exercise testing within ~1 msec.
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A simple three-parameter patient-specific model accurately models QT hysteresis during exercise testing, eliminating bias from population-based QTc correction formulas.
Hadley et al. (2011) studied this question. Patient-specific QT-RR hysteresis model vs. Incremental stepped protocol was evaluated on QT-RR curves and rate corrected QT values. A simple patient-specific model accurately modeled QT hysteresis over an entire exercise test, with an estimated average 95% QT confidence limit of approximately 1 msec.
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