QT interval: Difference between revisions
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Normal values for the corrected QT interval are between 0.36 and 0.44 seconds. | Normal values for the corrected QT interval are between 0.36 and 0.44 seconds. | ||
A prolonged QT internal may lead to [[Torsades de | A prolonged QT internal may lead to [[Torsades de pointes]]. Drugs may prolong the [[QT interval]].<ref name="pmid14999113">{{cite journal |author=Roden DM |title=Drug-induced prolongation of the QT interval |journal=N. Engl. J. Med. |volume=350 |issue=10 |pages=1013–22 |year=2004 |month=March |pmid=14999113 |doi=10.1056/NEJMra032426 |url=http://content.nejm.org/cgi/pmidlookup?view=short&pmid=14999113&promo=ONFLNS19 |issn=}}</ref> A list of these drugs is available at the [http://torsades.org/medical-pros/drug-lists/bycategory.cfm Arizona Center for Education & Research on Therapeutics]. | ||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 09:27, 22 December 2008
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
- ↑ 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.