Why the study?
How do electrocardiographic criteria for ventricular hypertrophy correlate with anatomic findings in patients with right bundle-branch block?
How do electrocardiographic criteria for ventricular hypertrophy correlate with anatomic findings in patients with right bundle-branch block?
In the presence of right bundle-branch block, Barker and Valencia's ECG criteria for RVH are more accurate than Milnor's, while LVH is often masked.
May favor Barker-Valencia over Milnor criteria for RVH in RBBB; leaves validation to prospective studies with modern imaging.
Forty-nine autopsied cases of complete and incomplete right bundle-branch block were studied with correlation of the electrocardiographic and anatomic diagnosis of ventricular hypertrophy. Twenty-six (53 per cent) of the cases showed anatomic evidence of right ventricular hypertrophy. The cases were studied for right ventricular hypertrophy according to the criteria of Barker and Valencia and of Milnor. Milnor's criteria resulted in frequent overdiagnosis while those that met Barker and Valencia's criteria usually but not invariably showed anatomic right ventricular hypertrophy. The electrocardiographic diagnosis of left ventricular hypertrophy was masked by the bundle-branch block in anatomically proved cases.
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Booth et al. (1958) studied this question.
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