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High QTcB on an ECG indicates a prolonged corrected QT interval, which is a measure of the time taken for the heart's electrical system to reset after each heartbeat. A prolonged QTcB can increase the risk of serious arrhythmias and may be associated with various conditions, such as electrolyte imbalances, certain medications, or congenital long QT syndrome. It's important for healthcare providers to evaluate the underlying causes and potential risks when they encounter a high QTcB.

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1mo ago

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Yes, there is a relatively straightforward method to convert QTcF (Fridericia) to QTcB (Bazett) values, though it’s not always precise. The formula for QTcB is QTcB = QT / √(RR), while QTcF uses QT / (RR^(1/3)). To estimate QTcB from QTcF, one can rearrange the formulas, but keep in mind that individual patient factors may affect accuracy. Therefore, while a conversion is possible, clinical context should always be considered.


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