Complete right bundle branch block (CRBBB) with three different mean frontal plane QRS axes--a case report.
A routine ECG of a seventy-year-old man, who had been followed for five years because of complete right bundle branch block (CRBBB) with first-degree atrioventricular (AV) block, showed CRBBB and three different mean frontal plane QRS axes suggesting normal conduction, bradycardia-dependent left anterior hemiblock, and tachycardia-dependent left posterior hemiblock--all within the same tracing. Holter recording demonstrated transient advanced AV block, and a permanent pacemaker was implanted.
Kanemoto
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Department of Internal Medicine, Tokai University School of Medicine, Isehara, Japan.
D000368:Aged; D002037:Bundle-Branch Block / Q000503:physiopathology*; D004562:Electrocardiography / Q000379:methods; D005500:Follow-Up Studies; D006801:Humans; D008297:Male