DISCRIMINATIVE ROLE OF THE EXTREME VALUES OF THE ISOPOTENTIAL MAPS IN RBBB VERSUS LBBB DIAGNOSIS

摘要

The study was undertaken in order to evaluate a discriminative usefulness of the potential extremes values of the QRS isopotential maps in relation to various types of bundle branch block. The 65 patients aged 32-78 years was divided to the six subsets: LBBB, PLBBB, LAFB, RBBB, PRBBB, PRBBB+LAFB. The study population passed the body surface potential mapping, which resulted in a construction of the seven isopotential QRS maps. The significant group differences were found both for minimums and maximums. Of the most significant discriminative value appeared to be the group-median minimums values facilitating a differentiating diagnosis of left and right bundle branch block.