Differential diagnosis of tachycardia with a typical left bundle branch block morphology  

作　　者：Jeffrey S Neiger Richard G Trohman 

机构地区：[1]Department of Medicine,Section of Cardiology,Clinical Cardiac Electrophysiology Service,Rush University Medical Center,Chicago,IL 60612, United States

出　　处：《World Journal of Cardiology》2011年第5期127-134,共8页世界心脏病学杂志（英文版）（电子版）

摘　　要：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.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.

关 键 词：TYPICAL left BUNDLE branch block Wide complex TACHYCARDIA BUNDLE branch REENTRANT VENTRICULAR TACHYCARDIA 

分 类 号：R541.7[医药卫生—心血管疾病]