Key result
This review describes the mechanisms, clinical features, and treatment strategies for wide QRS complex tachycardias presenting with a typical left bundle branch block pattern.
This review provides an overview of the mechanisms, clinical features, and treatment strategies for wide QRS complex tachycardias presenting with a typical left bundle branch block pattern.
May aid recognition of LBBB-pattern wide QRS tachycardias; leaves open prospective validation of strategies.
The evaluation of wide QRS complex tachycardias (WCT) remains a common dilemma for clinicians. Numerous algorithms exist to aid in arriving at the correct diagnosis. Unfortunately, these algorithms are difficult to remember, and overreliance on them may prevent cardiologists from understanding the mechanisms underlying these arrhythmias. One distinct subcategory of WCTs are those that present with a "typical" or "classic" left bundle branch block pattern. These tachycardias may be supraventricular or ventricular in origin and arise from functional or fixed aberrancy, bystander or participating atriofascicular pre-excitation, and bundle branch reentry. This review will describe these arrhythmias, illustrate their mechanisms, and discuss their clinical features and treatment strategies.
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Neiger et al. (2011) conducted a review in Wide QRS complex tachycardias with a typical left bundle branch block pattern. This review describes the mechanisms, clinical features, and treatment strategies for wide QRS complex tachycardias presenting with a typical left bundle branch block pattern.
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