Nava A, Alboni P, Rusconi L, Malacarne C
G Ital Cardiol. 1975;5(1):42-52.
Out of 4000 vectorcardiograms, 23 of them showed the most tipical pattern of left posterior hemiblock (BFP). According to the vectorial characteristics, they were divided into 5 groups; only two groups (for a total of 8 cases) showed, according to the Authors' opinion, the characteristics of the isolated BFP. The diagnostic difficulties of such a conduction disturbance are discussed since, it simulates, the vectorial pattern of the vertical heart. Moroever there is an underlining possibility that conduction disturbances in the right heart coexist in many cases of supposed isolated BFP with marked axis rotation to the right. The Authors agree with the hypothesis already expressed by Polu on the vectorial progress of the isolated BFP which should have an AQRS of about 70 degrees; an exact electrocardiographic diagnosis might be therefore impossible.
在4000份心电向量图中，有23份显示出最典型的左后分支阻滞（BFP）模式。根据向量特征，它们被分为5组；根据作者的观点，只有两组（共8例）显示出孤立性BFP的特征。文中讨论了这种传导障碍的诊断困难，因为它模拟了垂直心脏的向量模式。此外，在许多假定的孤立性BFP且电轴明显向右旋转的病例中，存在右心传导障碍并存的潜在可能性。作者认同Polu已经提出的关于孤立性BFP向量进展的假说，即其AQRS约为70度；因此可能无法进行准确的心电图诊断。
