Torsade de Pointes: Difference between revisions

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Torsade de pointes is a ventricular tachycardia associated with a [[Conduction#The_QT_time|long QT time]] on the resting ECG. Torsade de pointes is typically initiated by a short-long-short interval. A ventricle extrasystole (first beat: short) is followed by a compensatory pause. The following beat (second beat: long) has a longer QT interval. If the next beat follows shortly thereafter, ther is a good chance that this third beat falls within the QT interval, resulting in the R on T phenomenon and subsequent Torsades de pointes. During Torsades de pointes the ventricles depolarize in a circular fashion resulting in QRS complexes with a continuously turning heart axis around the baseline (hence the name ''Torsade de Pointes''). Read the chapter on the [[Long_QT_syndrome|Long QT Syndrome]] for an list of causes.
Torsade de pointes is a ventricular tachycardia associated with a [[Conduction#The_QT_time|long QT time]] on the resting ECG. Torsade de pointes is typically initiated by a short-long-short interval. A ventricle extrasystole (first beat: short) is followed by a compensatory pause. The following beat (second beat: long) has a longer QT interval. If the next beat follows shortly thereafter, ther is a good chance that this third beat falls within the QT interval, resulting in the R on T phenomenon and subsequent Torsades de pointes. During Torsades de pointes the ventricles depolarize in a circular fashion resulting in QRS complexes with a continuously turning heart axis around the baseline (hence the name ''Torsade de Pointes''). Read the chapter on the [[Long_QT_syndrome|Long QT Syndrome]] for an list of causes. Also, a more seldom form of short coupled Torased de Pointes has been observed.<cite>Leenhardt</cite>


'''Treatment'''<cite>ACC</cite>
'''Treatment'''<cite>ACC</cite>
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#Eldar pmid=3624666
#Eldar pmid=3624666
#ACC pmid=16923744
#ACC pmid=16923744
#Leenhardt pmid=8281648
</biblio>
</biblio>
==External Links==
==External Links==
*[http://www.torsades.org A long list of drugs that can induce Torsade de Pointes]
*[http://www.torsades.org A long list of drugs that can induce Torsade de Pointes]

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