Pulseless ventricular tachycardia classification: Difference between revisions

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Revision as of 18:11, 31 May 2020

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aisha Adigun, B.Sc., M.D.[2]

Overview

Pulseless ventricular tachycardia may as a ventricular tachycardia be classified based on the morphology of the QRS complexes into two subtypes/groups: monomorphic ventricular tachycardia, and polymorphic ventricular tachycardia

Classification

Based on the morphology of the QRS complexes, ventricular tachycardia can be grouped into two types:

Monomorphic ventricular tachycaridia

In monomorphic ventricular tachycardia the more common form, the rhythm originates from a single focus within the ventricles and the QRS complexes within each lead are identical. This form of ventricular tachycardia is most commonly seen in patients with underlying structural heart diseases.

12 lead electrocardiogram showing a run of monomorphic ventricular tachycardia (VT)

Polymorphic ventricular tachycardia

In polymorphic ventricular tachycardia, there are multiple ventricular foci with the resultant QRS complexes varying from beat-to-beat. Torsade de Pointes is the most common form of polymorphic ventricular tachycardia and appears as a cyclical progressive change in the cardiac axis. The most common cause of polymorphic ventricular tachycardia is myocardial ischemia.

References

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 ==Overview==
-There is no established system for the classification of [disease name].
-OR
+[[Pulseless ventricular tachycardia may]] as a [[ventricular tachycardia]] be classified based on the morphology of the QRS complexes into two subtypes/groups: monomorphic ventricular tachycardia, and polymorphic ventricular tachycardia
-[Disease name] may be classified according to [classification method] into [number] subtypes/groups: [group1], [group2], [group3], and [group4].
-OR
-[Disease name] may be classified into [large number > 6] subtypes based on [classification method 1], [classification method 2], and [classification method 3].
-[Disease name] may be classified into several subtypes based on [classification method 1], [classification method 2], and [classification method 3].
-OR
-Based on the duration of symptoms, [disease name] may be classified as either acute or chronic.
-OR
-If the staging system involves specific and characteristic findings and features:
-According to the [staging system + reference], there are [number] stages of [malignancy name] based on the [finding1], [finding2], and [finding3]. Each stage is assigned a [letter/number1] and a [letter/number2] that designate the [feature1] and [feature2].
-OR
-The staging of [malignancy name] is based on the [staging system].
-OR
-There is no established system for the staging of [malignancy name].
 ==Classification==
-There is no established system for the classification of [disease name].
+Based on the morphology of the QRS complexes, ventricular tachycardia can be grouped into two types:
-OR
-[Disease name] may be classified according to [classification method] into [number] subtypes/groups:
-*[Group1]
-*[Group2]
-*[Group3]
-*[Group4]
-OR
-[Disease name] may be classified into [large number > 6] subtypes based on:
-*[Classification method 1]
-*[Classification method 2]
-*[Classification method 3]
-[Disease name] may be classified into several subtypes based on:
-*[Classification method 1]
-*[Classification method 2]
-*[Classification method 3]
-OR
-Based on the duration of symptoms, [disease name] may be classified as either acute or chronic.
-OR
-'''If the staging system involves specific and characteristic findings and features:'''
+===Monomorphic ventricular tachycaridia===
+*In monomorphic ventricular tachycardia the more common form, the rhythm originates from a single focus within the ventricles and the QRS complexes within each lead are identical. This form of ventricular tachycardia is most commonly seen in patients with underlying structural heart diseases.
-According to the [staging system + reference], there are [number] stages of [malignancy name] based on the [finding1], [finding2], and [finding3]. Each stage is assigned a [letter/number1] and a [letter/number2] that designate the [feature1] and [feature2].
+[[Image:Electrocardiogram of Ventricular Tachycardia.png|center|500px|12 lead [[electrocardiogram]] showing a run of monomorphic ventricular tachycardia (VT)]]
-OR
+===Polymorphic ventricular tachycardia===
+* In polymorphic ventricular tachycardia, there are multiple ventricular foci with the resultant QRS complexes varying from beat-to-beat. Torsade de Pointes is the most common form of polymorphic ventricular tachycardia and appears as a cyclical progressive change in the cardiac axis. The most common cause of polymorphic ventricular tachycardia is myocardial ischemia.
-The staging of [malignancy name] is based on the [staging system].
+[[File:Polymorphic vt.jpg|center|500 px|thumb|Adopted from Wikipedia]]
-OR
-There is no established system for the staging of [malignancy name].
 ==References==