Right bundle branch block: a source of error in the Doppler assessment of right ventricular pressure in patients with a ventricular septal defect.
A case is presented in which low right ventricular pressure was calculated erroneously from the Doppler-derived velocity of flow through a ventricular septal defect. This is thought to be due to the presence of right bundle branch block. Reasons for this error and a way to avoid errors in calculation are discussed.
Warren
A E
AE
Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia.
Sharratt
G P
GP
D002037:Bundle-Branch Block / Q000000981:diagnostic imaging*; D003951:Diagnostic Errors; D015150:Echocardiography, Doppler; D005260:Female; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006345:Heart Septal Defects, Ventricular / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging