Ventricular tachycardia classification: Difference between revisions

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==Overview==
==Overview==
[[Ventricular tachycardia]] refers to a [[rhythm]] with a [[heart rate]] in excess of 100 (and in some definitions 120) [[beats per minute]] that arises distal to the [[bundle of His]]. [[Ventricular tachycardia]] can be classified based on morphology and duration The [[morphology]] of the [[QRS complexes]] on the [[ECG]] maybe ([[monomorphic ventricular tachycardia]] vs [[polymorphic ventricular tachycardia]]). In sustained [[VT]]  duration of [[VT]] lasts > 30 sec or [[VT]]< 30 sec that needs to termination due to compromised [[hemodynamic]]. Nonsustained, or unsustained [[VT]]is more than 3 consecutive [[premature ventricular complexes]] with spontaneously termination.
[[Ventricular tachycardia]] refers to a [[rhythm]] with a [[heart rate]] in excess of 100 (and in some definitions 120) [[beats per minute]] that arises distal to the [[bundle of His]]. [[Ventricular tachycardia]] can be classified based on morphology and duration The [[morphology]] of the [[QRS complexes]] on the [[ECG]] maybe ([[monomorphic ventricular tachycardia]] vs [[polymorphic ventricular tachycardia]]). In sustained [[VT]]  duration of [[VT]] lasts > 30 sec or [[VT]]< 30 sec that needs to termination due to compromised [[hemodynamic]]. Nonsustained, or unsustained [[VT]]is more than 3 consecutive [[premature ventricular complexes]] with spontaneously termination. [[Bidirectional VT]] is a type of
[[VT]] with  beat to beat changing [[QRS]] frontal plane [[axis]] indicating of [[digoxin toxicity]] or [[catecholaminergic polymorphic VT]].


==Classification Based Upon Morphology of the QRS Complexes==
==Classification Based Upon Morphology of the QRS Complexes==

Revision as of 09:43, 21 May 2021

Ventricular tachycardia Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Sara Zand, M.D.[2] Cafer Zorkun, M.D., Ph.D. [3]

Overview

Ventricular tachycardia refers to a rhythm with a heart rate in excess of 100 (and in some definitions 120) beats per minute that arises distal to the bundle of His. Ventricular tachycardia can be classified based on morphology and duration The morphology of the QRS complexes on the ECG maybe (monomorphic ventricular tachycardia vs polymorphic ventricular tachycardia). In sustained VT duration of VT lasts > 30 sec or VT< 30 sec that needs to termination due to compromised hemodynamic. Nonsustained, or unsustained VTis more than 3 consecutive premature ventricular complexes with spontaneously termination. Bidirectional VT is a type of

VT with  beat to beat changing QRS frontal plane axis indicating of digoxin toxicity or catecholaminergic polymorphic VT.

Classification Based Upon Morphology of the QRS Complexes

Classification of ventriculat arrhythmia:

Term Definition Feature
Ventricular tachycardia[1] Presence of ≥ 3 consecutive premature ventricular complexes with the rate of >100 beats per minute or cycle length< 600 ms
[2]
Sustained VT
  • VT> 30 sec
  • VT< 30 sec that needs to termination due to compromised hemodynamic
Nonsustained, or unsustained VT
Monomorphic VT
  • Uniform and stable beat to beat QRS morphology
  • 12 lead electrocardiogram showing a run of monomorphic ventricular tachycardia (VT)
    12 lead electrocardiogram showing a run of monomorphic ventricular tachycardia (VT)
Polymorphic VT
  • Changing beat to beat QRS morphology
  • Adopted from Wikipedia
Bidirectional VT
Torsades de pointes
[3]
Ventricular flutter
[4]
Ventricular fibrillation
[5]
VT, VF storm
  • Electerical storm or cardiac instability due to ≥ 3 episodes of sustained VT, VF or shock delivery from ICD within 24 hours

References

  1. "ACC/AHA/HRS 2006 Key Data Elements and Definitions for Electrophysiological Studies and Procedures". Circulation. 114 (23): 2534–2570. 2006. doi:10.1161/CIRCULATIONAHA.106.180199. ISSN 0009-7322.
  2. ECG found in of https://en.ecgpedia.org/index.php?title=Main_Page
  3. ECG found in https://en.ecgpedia.org/index.php?title=Main_Page
  4. ECG found in https://en.ecgpedia.org/index.php?title=Main_Page
  5. ECG found in https://en.ecgpedia.org/index.php?title=Main_Page


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