Torsades de pointes pathophysiology: Difference between revisions
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==Overview== | ==Overview== | ||
Torsades de pointes is defined as the presence of [[polymorphic ventricular tachycardia]] with a prolonged QT segment on [[EKG]]. | Torsades de pointes is defined as the presence of [[polymorphic ventricular tachycardia]] with a prolonged QT segment on [[EKG]]. | ||
==Pathophysiology== | ==Pathophysiology== | ||
Revision as of 16:15, 18 October 2012
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Torsades de pointes Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Torsades de pointes pathophysiology On the Web |
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American Roentgen Ray Society Images of Torsades de pointes pathophysiology |
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Risk calculators and risk factors for Torsades de pointes pathophysiology |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
Torsades de pointes is defined as the presence of polymorphic ventricular tachycardia with a prolonged QT segment on EKG.
Pathophysiology
Torsade de pointes is characterized by constantly changing rhythm amplitude. 'Torsade de pointes' in French means "Twisting of the Points". The changing rhythm amplitudes comes from the ventricular depolarizing waves constantly shifting its axis. It is usually caused by hypomagnesemia, hypokalemia, and malnourished alcoholics. Although Torsades de Pointes (TdP) is a rare ventricular arrhythmia, it can degenerate into ventricular fibrillation, leading to death without rapid medical intervention. TdP is associated with long QT syndrome, a condition whereby prolonged QT intervals are visible on the ECG.
Video: Torsade de pointes
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