QT Prolongation
Định nghĩa
A delay in the electrical repolarization of the heart's ventricles, visible on an ECG as a lengthened QT interval. Drug-induced QT prolongation increases the risk of a dangerous heart rhythm called torsades de pointes, which can lead to sudden cardiac death.
Ví dụ
Azithromycin, certain antipsychotics, and some antiemetics can prolong the QT interval. Combining two QT-prolonging drugs significantly increases cardiac risk.
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