Immune deposits in human aortic atherosclerotic wall.
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Adult↗
Biomedical subjects
R Vlaicu
Publications and source records attributed to R Vlaicu.
Antithrombin III in patients with prosthetic cardiac valves.
When compared to 40 control subjects and to 13 patients with mitral stenosis (8 of them commissurotomized) antithrombin III (AT III) activity, assessed by a clotting technique, was found to be slightly but significantly depressed in the 18 patients with prosthetic valves in mitral position. Decrease of AT III level occurred mainly in patients with metallic Björk-Shiley prostheses in whom mitral valve replacement had been performed more than 12 months before the investigation. Particularly low AT III activities were noted in the three patients who developed thromboembolic complications with lethal evolution. Impaired AT III activity in a patient with prosthetic cardiac valves might be considered as a marker of ongoing in vivo activation of coagulation. Such a finding should be a warning and an indication for intensifying the antithrombotic therapy.
Adult↗
Viral myocarditis. Clinical, electrocardiographic and evolutive diversity.
Five observations of severe viral myocarditis are presented. Diverse cardiac emergencies (pump failure, ventricular premature beats or tachycardia, left bundle branch block, trifascicular block, grade 2 or 3 a-v block, severe hypotension, etc.) as well as associated conditions (pericarditis, interstitial nephritis, pneumonia, pulmonary massive thromboembolism) could be found. The course of the disease was acute in three cases, subacute in one and chronic in another. Two patients died with severe pump failure (associated with pulmonary thromboembolism in one case), The clinical, evolutive and histologic aspects were in good correlation. These cases illustrate the clinical, electrocardiographic and evolutive diversity of viral myocarditis.
Adult↗
Cardiac arrhythmias and submaximal exercise test.
Cardiac arrhythmias, investigated in 1000 persons subjects to a submaximal exercise test, showed an incidence of 6%. The most frequent were the ventricular premature beats, related in more than half of the cases to an organic, probably ischemic, heart disease. Left bundle branch block and ventricular tachycardia were rare and indicated an organic heart disease. Several other rare arrhythmias are discussed. In patients with exercise-induced cardiac arrhythmias, an increased ratio of the tension-time index to maximal oxygen consumption indicates an uneconomical and less efficient cardiac work. The increase of the PEP and of the PEP/LEVT ratio during recovery, in the subjects exhibiting exercise-induced ventricular premature beats, also suggests a lowered cardiac efficiency. These findings support the view that cardiac arrhythmias frequently coexist with an organic, especially ischemic, heart disease.
Arrhythmias, Cardiac↗
Long-term study of the risk factors in atherosclerosis.
A study of the risk factors in atherosclerosis carried out in 595 subjects over a period of 10 years showed an increased prevalence of arterial hypertension, of high serum cholesterol values and of overweight in 1970 as compared to 1960. This rise was significant for all the parameters studied and was particularly evident in serum cholesterol values and overweight, beginning with the 21 to 30 age decade. The frequency of subjects with risk factors increased with age. During the period of study there occurred certain changes within the population such as an increase in the total consumption of calories and in the lipid contents of the food, as well as of the cultural level of the population. The authors show that the increase in the number of subjects with risk factors and the natural history of the various diseases or disturbances depend on the changes of living conditions and of environment.
Adult↗