QT interval

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In cardiology and the electrocardiogram, the QT interval is the time from the start of the Q wave and the end of the T wave.

To correct the QT interval for heart rate:

Normal values for the corrected QT interval are between 0.36 and 0.44 seconds.

A prolonged QT internal may lead to Torsades de Pointes. Drugs may prolong the QT interval.[1] A list of these drugs is available at the Arizona Center for Education & Research on Therapeutics.

References

  1. Roden DM (March 2004). "Drug-induced prolongation of the QT interval". N. Engl. J. Med. 350 (10): 1013–22. DOI:10.1056/NEJMra032426. PMID 14999113. Research Blogging.