QT prolongation can be a result of either prolonged T wave or from elongation of ST segment. Dr. Mattu walks us through a few differentials for each.
Prolonged QT from elongated T wave
Prolonged QT from elongated ST segment
Also check out this post from LITFL for a list of drugs causing prolonged QT or just a refresher on understanding the QT segment on ECG.
Our thanks to Dr. Tim Davie for assembling the Copa Cardiogram each week. Please follow this link to get to spreadsheet of all Copa Cardiograms.
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