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Biomedical subjects

V Csik

Publications and source records attributed to V Csik.

6 recordsLinked to original sources
PubMed1998

Contrasting child and adolescent psychiatry services in Szeged, Hungary, and Glasgow, Scotland.

International comparisons of child and adolescent psychiatry services are rarely reported in the literature. The present study arose out of a TEMPUS collaborative project between the University Departments of Child and Adolescent Psychiatry in Szeged, Hungary, and Glasgow, Scotland. Using the Glasgow Audit Questionnaire, a profile of each service was obtained, including basic demographic data, types of disorders referred, treatment modalities used, and a measure of outcome. The results of this descriptive study indicate that although the two centres were broadly similar, there were major differences in the treatment modalities used. Reasons for the findings are discussed, as are the limitations of the study.

Adolescent↗
PubMed1983

Comparison of two calcium antagonists, verapamil and fendiline, in an experimental model of myocardial ischaemia mimicking classical angina on effort.

1 The effects of verapamil (0.15/kg) and fendiline (3 mg/kg) were studied in anaesthetized, thoracotomised dogs with a critical constriction of the left anterior descending coronary artery, paced in excess of the initial rate by 60-70 beats/min. Epicardial ST-segment elevation and changes in lactate uptake were used to assess the severity of myocardial ischaemia. 2 Both drugs prevented the ST-segment elevation and the reduced lactate uptake that resulted from atrial pacing. 3 The anti-ischaemic effect of fendiline is mainly due to its negative chronotropic action, whereas that of verapamil is due in part to bradycardia and in part to the reduced preload and afterload. In addition, both agents increase coronary flow to the ischaemic area and thus improve the myocardial oxygen supply/oxygen requirement ratio.

Angina Pectoris↗
PubMed1978

The effect of beta-adrenoceptor blocking drugs on free fatty acid and glucose utilization of the isolated canine heart with normal and restricted flow in the presence and absence of noradrenaline.

Effect of adrenergic beta-receptor blockade on the myocardial utilization of the main substrates by the isolated fibrillating dog heart perfused with constant volume of blood from a donor animal was studied at normal and restricted flow, and in the presence of noradrenaline. A direct metabolic action of the beta-blockade by increasing glucose uptake in the normal and reducing it in the ischemic heart, furthermore moderating the ischemic diminution of the lactate uptake could be shown. The intervention reduced elevated serum free fatty acid level and increased myocardial free fatty acid uptake observed in the presence of noradrenaline.

Adrenergic beta-Antagonists↗
PubMed1976

Nitroglycerin and dipyridamole on cardiac metabolism and dynamics in a new experimental model of angina pectoris.

An experimental model of angina pectoris has been developed in order to study the hemodynamic, metabolic and electrophysiological alterations of the heart assumed to occur in the human disease and to analyze the influence of nitroglycerin and dipyridamole on the above changes. In anesthetized and thoractomized dogs, the left anterior descending coronary artery was autoperfused from the subclavian artery. Coronary blood flow was reduced until the epicardial monopolar electrocardiogram recorded from the myocardial segment supplied by the constricted coronary artery was just short of ischemic changes. O2 consumption and lactate uptake of the same segment were determined from the arteriovenous difference by sampling venous blood draining this area. Increasing heart rate by 50 to 70 beats/min by electrical pacing of the right atrium evoked a reversible and reporducible elevation of the ST segment and T wave of the electrocardiogram. Blood flow to the area perfused by the constricted coronary artery as well as the O2 uptake of the same area failed to increase on pacing. A concomitant decrease of lactate uptake, sometimes becoming even negative, was indicative of ischemia of that area. These changes could be reduced or prevented by a 10-minute infusion of a total dose of 20 mug/kg of nitroglycerin but not by 60 mug/kg of dipyridamole. Since the changes are fully reversible and readily reproducible, and the response also appears to show parallelisms with those observed in the human patient during an acute angina pectoris attack, use of this model for the assay of antianginal drugs seems to be warranted.

Angina Pectoris↗