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Biomedical subjects

F Loperfido

Publications and source records attributed to F Loperfido.

At least 109 records · Page 6Linked to original sources
PubMed1978

[Comparison between vectocardiogram and echocardiogram in the diagnosis of left atrial enlargement (author's transl)].

The purpose of this study was to evaluate the influence of atrial enlargement on P wave abnormalities in "primary" (mitral stenosis) and "secondary" (left ventricular involvement) forms of left atrial overload. Echocardiograms and Frank Vectorcardiograms were obtained from 42 subjects, including 12 patients with mitral stenosis (group I A), 4 with mitral insufficiency (group I B), and 26 with left ventricular disease. Good correlations were founded between left atrial dimension and the following vectorcardiographic criteria: magnitude of the positive P vector in lead Z, sum of the positive P wave in leads X and Z, P positive duration/PR segment ratio in lead Z. No specific difference has been found in the vectorcardiographic abnormalities of the "primary" and "secondary" left atrial enlargement. Separate analysis revealed that P wave duration or amplitude changes can be proposed in group I A as specific and sensible criteria of left atrial enlargement. In contrast, the same criteria are highly unspecific when applied to the patients with left ventricular disease, because they can reflect the influence of other variables (left atrial pressure, intra-atrial conduction defects). Comparison of our results with those of other studies of P wave analysis did not demonstrate the superiority of the vectorcardiogram over the conventional electrocardiogram in the diagnosis of left atrial enlargement.

Adolescent↗
PubMed1978

[3 cases of cardiac echinococcosis. Diagnostic considerations].

Three cases of cardiac hydatidosis are described, with emphasis on electro-vectorcardiographic, policardiographic and angiographic data. The cysts, plurime in two patients, were localized in different sites: in the first patient only one cyst was present in the interventricular septum; in the second one there were cysts in the right atrial wall and in the diaphragmatic ventricular wall; in the last one a multilocular disrupted sac involved the left ventricular wall partially occupying the left ventricular cavity. Multiple pericardial cysts were also present in this patient. The usefulness of different invasive and non invasive techniques is here discussed regarding topographic diagnosis of cardiac hydatidosis.

Adult↗
PubMed1977

[Mobitz type II 2d degree atrioventricular block. Clinical and electrophysiological study].

His Bundle Electrogram (HBE) was recorded in 20 patients with Mobitz type II block. All patients were clinically evaluated and a history of syncope was carefully investigated. These patients were prospectively followed (mean follow up: 20,4 months). ECG showed LBBB in 9 patients, RBBB + LAHI in 6, RBBB + LPH in 3, LAH in 1, left axis deviation in 1. In all patients HBE revealed prolungation of H-Q interval and localization of block within the His-Purkinje system (within H in 4) distal to H in 16. In 9 patients intermittent complete heart block localized within the H-P system was documented during HBE recording. 15 patients (75%) experienced syncopal attacks. All patients underwent implantation of permanent demand pace-maker, without further episodes of syncope. Since the site of block is the most important determinant of prognosis, in all patients with Mobitz type II block, whether or not symptoms are present, prophylactic implantation of pace-maker is indicated, because high incidence of progression to complete heart block, with potential risk of Adams-Stokes syndrome and sudden death.

Adult↗