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Biomedical subjects

A Capon

Publications and source records attributed to A Capon.

67 records · Page 4Linked to original sources
PubMedDate not supplied

Quantitative study of the rate of recovery from aphasia due to ischemic stroke.

The extent of recovery from aphasia following ischemic stroke has been evaluated by a quantitative method. The greatest improvement was observed during the first 3 months following onset. The rate of recovery was similar for expression and for comprehension, but comprehension was usually less disturbed than expression. Final prognosis depends on the type of aphasia (the poorest prognosis was found for total or global aphasia) and on the severity of the initial insult.

Adult↗
PubMedDate not supplied

Lack of evolution of the cerebral blood flow during clinical recovery of a stroke.

Cerebral blood flow and clinical parameters were studied in 30 stroke patients at 15th, 30th, 60th, 90th days after the cerebral insult (Xenon 133 inhalation method). The clinical improvement was not accompanied by a progressive normalization of the CBF at rest. No relationship was found between the clinical data and the CBF values; either on the affected hemisphere or on the contralateral one. It is concluded that measurement of the CBF at rest has no predictive value as regards further clinical evolution.

Adult↗
PubMedDate not supplied

Action of vasodilators on regional cerebral blood flow in subacute or chronic cerebral ischemia.

Regional cerebral blood flow (bicompartmental and stochastic method) was measured in a series of 20 patients with unilateral brain softening. Measurements were repeated during the administration of a vasodilator. A deterimental effect on the perfusion of the disease area was observed in the majority of cases. It has been shown that the chances for a vasodilator to decrease the perfusion in the diseased area were greater when the angiogram showed obstruction of an intracranial artery.

Adolescent↗
PubMedDate not supplied

[Leukemia mortality and incidence of infantile leukemia near the Vatican Radio Station of Rome].

Some recent epidemiological studies suggest an association between lymphatic and haematopoietic cancers and residential exposure to high frequency electromagnetic fields (100 kHz-300 GHz) generated by radio and television transmitters. Vatican Radio, a very powerful radio station transmitting all over the world (up to 600 kW) is located in Santa Maria di Galeria, in the northern suburbs of the city of Rome. Electric field measurements in the proximity of the radio station ranged between 1.5 and 25 V/m. In the 10 km area around the station, with 60.182 residents (1999), leukaemia mortality among adults (> 14 years, 40 cases) in the period 1987-98 and childhood leukaemia incidence in the period 1987-99 (8 cases) were evaluated. The analysis (Stone's conditional test) was performed computing observed and expected cases (reference: population of Rome) in 5 bands of increasing radius (2 km width). The risk of childhood leukaemia was higher than expected within 6 km from the station (Standardized Incidence Ratio = 217; 95% Confidence Interval 99-405). Stone's test showed a significant decrease in risk with increasing distance both for male adult mortality (p-value = 0.03) and for childhood incidence (p-value = 0.04). A Score test, showed a significant decrease in risk of childhood incidence as function of the distance. The main limitations of this study are the small number of observed cases and the use of distance as a proxy for RF exposure. Further research will require a systematic campaign of electromagnetic field measurements to allow better assessment of the population exposure.

Adolescent↗
PubMedDate not supplied

[Techniques for the diagnosis of cerebral ischemia (author's transl)].

The various techniques for the diagnosis of cerebral ischemia are reviewed. The methods for investigating the large cervical arteries are considered (angiography, ultrasonic Döppler technique, carotid compression test) as well as those concerned with intracranial circulation. The latter are divided in "functional" methods (Rheoencephalography cerebral blood flow measurements with Xenon or with microspheres) and "morphological" methods (Brain scintigraphy and CAT scan). The respective values of the various methods are estimated in a personal series of patients.

Brain↗