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Biomedical subjects

M Beltrami

Publications and source records attributed to M Beltrami.

At least 19 recordsLinked to original sources
PubMed1991

A statistical approach to computerized EEG: preliminary data on control subjects and epileptic patients.

Factor Analysis represents an important method of extracting salient features from EEG data condensing functional as well as spatial informations in a few factors and so reducing redundancy of multi-channels computerized EEG data. A 16-channel computerized frequency analysis of background brain electrical activity during 3 functional conditions (eyes closed, eyes open and hyperventilation) were performed in 2 groups, 50 healthy subjects and 14 epileptic patients with generalized seizures. The differences in each frequency band between the 2 groups have been assessed by means of factor scores. Factor scores differences between control and epileptic patients have been found in theta and alpha frequency bands. These interictal EEG abnormalities were more evident in epileptic patients. This preliminary study shows the confirmatory capability of Factor Analysis and its usefulness in managing and comparing computerized EEG data.

Adult↗
PubMed1989

Contraceptive methods in the McCune-Albright syndrome.

We describe the case of a woman with McCune-Albright syndrome who had a pathological bone fracture while being treated with an oral contraceptive. In this syndrome the bone lesions contain estrogen and progesterone receptors. The possibility of progression of the bone lesions during pregnancy is well-known. We judge the use of oral contraceptives to be dangerous in this syndrome; the affected women must be orientated towards alternative contraceptive methods.

Adult↗
PubMed1987

The effect of supragingival plaque control on the composition of the subgingival microflora in human periodontitis.

The aim of this study was to evaluate the effect of supragingival plaque control on the composition of the subgingival microflora. 8 subjects with moderate to severe periodontitis were chosen for the study. Sites with periodontal destruction (GI greater than 2; probing depth greater than 6.5 mm; vertical alveolar bone loss on radiographs) were submitted to professional plaque control 3 X a week for 3 weeks. Contralateral sites received no prophylaxis and served as controls. Patients maintained usual oral hygiene during the observation period: it consisted exclusively of tooth brushing once or twice a day with no use of interdental cleaning aids. Clinical examination and bacterial sampling were performed every week. At the end of the study, PlI scores for the experimental sites showed a marked diminution compared with the control sites. No variations were observed in GI or probing depth in test or control sites during the study. The composition of subgingival plaque in both groups showed no significant variations during that period.

Adult↗
PubMed1981

[Echocardiographic study in congestive cardiomyopathy].

Single-dimensional echocardiography was used in the study of 15 patients with congestive cardiomyopathy. The main signs for the diagnosis of this disease and its differentiation from atherosclerotic coronaropathy were determined. Mitral and aortic echograms were examined along with the ventricular parameters in order to assess their importance in the study of ventricular function.

Aortic Valve↗