Supraventricular tachycardia differentiating SVT from VT: Difference between revisions
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Revision as of 16:11, 10 September 2012
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Supraventricular tachycardia Microchapters |
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Differentiating Among the Different Types of Supraventricular Tachycardia |
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Differentiating Supraventricular Tachycardia from Ventricular Tachycardia |
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Diagnosis |
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Treatment |
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2015 ACC/AHA Guideline Recommendations |
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Supraventricular tachycardia differentiating SVT from VT On the Web |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Differentiating SVT from VT
Most supraventricular tachycardias have a narrow QRS complex on the EKG. It is not infrequent, however, for aberrant conduction to be be present, sometimes as a result of the more rapid rate of conduction. This widening of the QRS complex yields supraventricular tachycardia with aberrant conduction (SVTAC) which produces a wide-complex tachycardia that may mimic ventricular tachycardia (VT). In the clinical setting, it is important to determine whether a wide-complex tachycardia is an SVT or a ventricular tachycardia, since they are treated differently. Ventricular tachycardia has to be treated appropriately, since it can quickly degenerate to ventricular fibrillation and death. A number of different algorithms have been devised to determine whether a wide complex tachycardia is supraventricular or ventricular in origin.[1]
In general, a history of structural heart disease, ischemic heart disease or congestive heart failure increases the likelihood that the tachycardia is ventricular in origin.