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  • Title: [Pulmonary stenosis with intact interventricular septum: qualitative and quantitative analysis of the vectorcardiogram (author's transl)].
    Author: Elia LR, Calabro' R, Alborino A, Marsico L, Violini R, Forni N, Greco R, Marsico F.
    Journal: G Ital Cardiol; 1981; 11(12):1948-56. PubMed ID: 7348184.
    Abstract:
    Eighty-one patients suffering from pulmonary stenosis with intact interventricular septum were divided into two groups according to their age: Group I (greater than 2 years), Group II (less than 2 years). In Group I, patients with RVSP up to 50 mmHg have been included in subgroup A; patients with RVSP from 50 to 90 mmHg in subgroup B, patients with RVSP greater than 90 mmHg in subgroup C. In Group II forms with RVSP less than or equal to 60 mmHg have been considered moderate and forms with RVSP greater than 60 mmHg severe. The rotation and duration of the QRS loop on the various planes, presence of a terminal slowing, the ratios 0,01"/LMSV and 0,02"/LMSV, the LMSV and the RMSV in order to assess the most significant vcgraphic parameters to predict severity of the stenosis have been analysed. A fair correlation has been found between RMSV and RVSP (r = 0,55 in Group I; r = 0,54 in Group II). The AA. conclude that a counterclockwiseloop on the H plane and the presence of a terminal slowing are the most reliable parameters for recognizing the light forms, while the clockwise loop on the H plane and a markedly increased voltage of RMSV indicate more severe stenosis.
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