Population
Patients undergoing electrocardiogram measurement, specifically those with hypopotassemia without hypocalcemia
Design
Other
Authors
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Requires careful T-U differentiation in hypokalemia to avoid QT mismeasurement; leaves open arrhythmia mechanisms in electrolyte disorders.
Proper identification of the end of the T wave, avoiding confusion with the U wave, reveals that the Q-T interval is not prolonged in hypopotassemia without hypocalcemia.
Lepeschkin et al. (1952) studied this question.
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