Biomedical subjects
Publications and source records attributed to M Vincenzi.
The case of a patient with angiosarcoma of the right atrium is described with respect to clinical presentation, hemodynamic and angiographic findings and post-mortem examination. The need of a high index of suspicion when dealing with patients who show evidence of systemic venous congestion is stressed.
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In 13 hypercholesterolemic children, re-screened for serum cholesterol after a 1-year interval, hypercholesterolemia was confirmed in only 61.5% of the cases. A tentative explanation seems to be the statistical principle of regression towards the mean. The lipid--lipoprotein analysis showed that serum and LDL cholesterol concentrations in the 13 hypercholesterolemic children and their parents were significantly higher compared to controls (children and parents). At re-screening, hyper-LDL cholesterolemia was present in only 8 of the 13 children (61.5%); 4 cases exhibited hyper-HDL cholesterolemia (30.7%). The high prevalence of the parents repeating the lipoprotein abnormality and the electrophoretic pattern found in the propositi (children) confirms the familial aggregation of the hypercholesterolemic states (hyper-LDL and hyper-HDL cholesterolemia). In conclusion the results of our study stress the importance of determining the lipid--lipoprotein composition, rather then merely evaluating total serum cholesterol in order to make a correct diagnosis of the hypercholesterolemic state. It should also be emphasized that the lipoprotein disturbances and their familial aggregation may be detected early in childhood, suggesting that the familial screening for risk factors of atherosclerosis should be done at pediatric age.
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The behaviour of some serum enzymes (CPK, LDH, alpha HBDH, SGOT) in 50 patients after permanent pacemaker implantation is outlined. Changes of each enzyme were analyzed statistically by applying Student's t test. Most significant changes are represented by the increase in CPK serum concentrations (19 cases). In 14 of them LDH isoenzymes were evaluated and in 4 patients alteration of LDH1/LDH2 ratio suggestive of cardiac "injury" were observed.
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A case of mitral valvular disease in which spontaneous return of sinus rhythm occurred after 12 years of atrial fibrillation is reported. The course of the disease, complicated by A.V. and intraventricular conduction disturbances which made the insertion of a pacemaker necessary, suggests that return to sinus rhythm should not be considered necessarily an improvement in the clinical picture and in the prognosis in such patients.
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The hemodynamic data obtained after rapid i.v. administration of verapamil (Isoptin) (7.5-12.5 mg) to 7 healthy subjects are presented and discussed. The drug caused an early and statistically significant increase in heart rate and output with concomitant decrease of blood pressure (mainly diatolic) and peripheral resistance. Negative inotropic effects were not observed by the decreased peripheral resistance probably masks any possible negative inotropic effects of the drug.
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