Tachycardia classification: Difference between revisions
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==Classification== | ==Classification== | ||
The 12 lead [[electrocardiogram|ECG]] can help distinguish between the various types of tachycardias, generally distinguished by their site of pacemaker origin: | The 12 lead [[electrocardiogram|ECG]] can help distinguish between the various types of tachycardias, generally distinguished by their site of [[pacemaker]] origin: | ||
*[[Sinus tachycardia]], which originates from the Sinoatrial (SA) node, near the base of the [[superior vena cava]]. | *[[Sinus tachycardia]], which originates from the [[SA node|Sinoatrial (SA) node]], near the base of the [[superior vena cava]]. | ||
*[[Ventricular tachycardia]], any tachycardia which originates in the [[ventricles]]. | *[[Ventricular tachycardia]], any tachycardia which originates in the [[ventricles]]. | ||
*[[Supraventricular tachycardia]] (SVT), which is a tachycardia paced from the atria or the AV node. SVT rhythms include: | *[[Supraventricular tachycardia]] (SVT), which is a tachycardia paced from the [[atria]] or the [[AV node]]. SVT rhythms include: | ||
**[[Atrial fibrillation]] | **[[Atrial fibrillation]] | ||
**AVNRT or [[AV nodal reentrant tachycardia]] | **[[AVNRT]] or [[AV nodal reentrant tachycardia]] | ||
**AVRT or [[AV reentrant tachycardia]] | **[[AVRT]] or [[AV reentrant tachycardia]] | ||
**[[Junctional tachycardia]] | **[[Junctional tachycardia]] | ||
It is sometimes useful to classify tachycardias as either narrow complex tachycardias (often referred to as [[supraventricular tachycardia]]s) or [[wide complex tachycardia]]s. Narrow and wide refer to the width of the [[QRS complex]] on the [[ECG]]. Narrow complex tachycardias tend to originate in the [[atria]], while wide complex | It is sometimes useful to classify tachycardias as either narrow complex tachycardias (often referred to as [[supraventricular tachycardia]]s) or [[wide complex tachycardia]]s. Narrow and wide refer to the width of the [[QRS complex]] on the [[ECG]]. Narrow complex tachycardias tend to originate in the [[atria]], while [[wide complex tachycardia]]s tend to originate in the [[ventricle]]s. Tachycardias can be further classified as either regular or irregular. | ||
==References== | ==References== | ||
Revision as of 15:19, 9 January 2013
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Tachycardia Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Tachycardia classification On the Web |
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American Roentgen Ray Society Images of Tachycardia classification |
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Risk calculators and risk factors for Tachycardia classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: M.Umer Tariq [2]
Classification
The 12 lead ECG can help distinguish between the various types of tachycardias, generally distinguished by their site of pacemaker origin:
- Sinus tachycardia, which originates from the Sinoatrial (SA) node, near the base of the superior vena cava.
- Ventricular tachycardia, any tachycardia which originates in the ventricles.
- Supraventricular tachycardia (SVT), which is a tachycardia paced from the atria or the AV node. SVT rhythms include:
It is sometimes useful to classify tachycardias as either narrow complex tachycardias (often referred to as supraventricular tachycardias) or wide complex tachycardias. Narrow and wide refer to the width of the QRS complex on the ECG. Narrow complex tachycardias tend to originate in the atria, while wide complex tachycardias tend to originate in the ventricles. Tachycardias can be further classified as either regular or irregular.