BLOCK 11: Wide Complex Tachycardias

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Learning Objectives By Lesson
Wide Complex Tachycardias (WCTs)

Define wide complex tachycardias (WCTs)
Create a differential diagnosis for wide complex tachycardias (WCTs)
Describe the difference between simultaneous and sequential ventricular activation and its general effect on the QRS duration
Describe the clinical significance of accurate wide complex tachycardia (WCT) differentiation

Implications of Inaccurate WCT Diagnosis

Describe potential clinical implications of ventricular tachycardia (VT) misdiagnosed as supraventricular tachycardia (SVT)
Describe potential clinical implications of supraventricular tachycardia (SVT) misdiagnosed as ventricular tachycardia (VT)

AV Dissociation in WCT Differentiation

Describe AV dissociation and the electrocardiographic features associated with it
Identify AV dissociation on an ECG
Describe the utility of AV dissociation in wide complex tachycardia (WCT) differentiation
Describe the mechanism behind and electrocardiograpghic features associated with capture beats
Identify capture beats on an ECG
Describe the mechanism behind and electrocardiograpghic features associated with fusion beats
Identify fusion beats on an ECG
Describe how to identify artifact in the context of a wide complex tachycardia (WCT)

WCT & Baseline ECG Comparison

Describe the utility of wide complex tachycardia (WCT) and baseline ECG comparison in differentiating WCTs
Describe and identify wide complex tachycardia (WCT) and baseline ECG comparison features favoring ventricular tachycardia (VT)

ECG Features Favoring Supraventricular Tachycardia with Aberrancy

Describe ECG feautres favoring supraventricular tachycardia (SVT) with aberrancy over ventricular tachycardia (VT)
Identify ECG feautres favoring supraventricular tachycardia (SVT) with aberrancy over ventricular tachycardia (VT)

WCT Management

Describe an approach wide complex tachycardia (WCT) management based on the patient's clinical status
Identify the appropriate management for an unresponsive patient with a wide complex tachycardia (WCT)
Identify the appropriate management for an unstable patient with a wide complex tachycardia (WCT)
Identify the appropriate management for a stable patient in a supraventricular wide complex tachycardia
Identify the appropriate management for a stable patient in ventricular tachycardia

Contributors: Anthony Kashou, MD; Mahmoud Ismayl, MD; Khalid Saeed Al-Asad, MD; Adnan Halboni, MD; Adolfo Martinez Salazar, MD; Nandan Anavekar, MBBCh

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