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Biomedical subjects

M Mercuri

Publications and source records attributed to M Mercuri.

At least 199 records · Page 11Linked to original sources
PubMedDate not supplied

Supracondylar process of the humerus: four cases.

Four cases of supracondylar process of the humerus are presented. Two of the patients were asymptomatic and in one of these the supracondylar process was fractured. In a third there was median nerve compression and in the last there was ulnar nerve entrapment. The anatomical features, clinical symptoms and therapy are described. Good results were obtained after resection of the supracondylar process; neurological symptoms regressed one month after surgery.

Adult↗
PubMedDate not supplied

Effect of physical training on leukocyte rheology throughout induced ischaemia.

Before and after a physical training programme a treadmill exercise was used to stress leg circulation and induce ischaemia in 20 patients affected by peripheral arterial occlusive disease (PAOD). Transcutaneous oxygen pressure (TcPO2) was monitored constantly and blood samples drawn at baseline, the onset of calf pain, the maximum walking time, the minimum TcPO2 value, and when the TcPO2 recovered half its basal value. The mononuclear and polymorphonuclear leucocyte subfractions were separated by density and their filterability rates (through 5 microns pore diameter Nuclepore filters) measured using a positive pressure filtration system. The mononuclear filterability rate was significantly impaired throughout the ischaemic event and inversely correlated with the TcPO2 values. Physical training while delaying the onset and progress of ischaemia did not modify this pattern, implying that regular exercise does not affect the rheological properties of leukocytes--impairments in which are markers of ischaemia.

Carbon Dioxide↗
PubMedDate not supplied

[Infection and blood filterability].

Some markers of inflammation were monitored, and whole blood filterability was measured using a low shear positive pressure nuclepore filtration system in 21 patients at the onset of an acute bacterial infection and again after full clinical recovery 4 weeks later and compared to the filterability of 40 matched healthy controls. Impairments in whole blood filterability persisted even after convalescence.

Aged↗
PubMedDate not supplied

[Peripheral arterial occlusive disease in old age: the role of leukocytes].

Transcutaneous oxygen pressure (tcPO2), the unfractionated leukocyte filterability rate (ULFR), and plasma oxydant activity (POA) were monitored during a standard treadmill exercise test (2 km/h, 12 degrees slope) in two groups of stage-II peripheral vascular disease patients: one middle-aged group with an average age of 55 +/- 3 s.d. years, the other group elderly (average age 68 +/- 4 s.d. years). The results were compared to a healthy control group of 20 volunteers (average age 52 +/- 4 s.d. years). At the maximum walking time, the ULFR was significantly (p less than 0.001) impaired in both groups of patients compared to controls, and the level of plasma oxidant activity increased significantly (p less than 0.001). When the tcPO2 recovered half its basal value, the level of plasma oxidant activity approached basal values but the ULFR remained significantly (p less than 0.001) impaired. Inter-group analysis showed the total walking time was significantly (p less than 0.05) shorter in the elderly patients, and at the tcPO2 half recovery time the ULFR was significantly (p less than 0.01) more impaired.

Aged↗
PubMedDate not supplied

[Infection and tissue ischemia: role of cellular rheology].

It is not clear how acute infection is associated with a subsequent ischaemic brain infarction. Infection may, indeed, cause changes in blood fluidity. Abnormalities in blood flow, particularly in white blood cell rheology, are known to be precipitating factors for ischaemic events. Therefore, the rheological behaviour of the erythrocytes and of the main leucocyte subpopulations (granulocytes = G; mononuclear cells = MNL) were studied in 29 patients 30 days after the onset of acute bacterial infections. A group of 49 controls (matched for sex, body mass index and cardiovascular risk factors) was also evaluated. A significant impairment in the flow properties of the mononuclear leucocyte subpopulation was found in the patients as compared to control. These results indicate that disturbances in leucocyte rheology might be considered an additional risk factor for ischaemic brain infarction when this occurs shortly after febrile infection.

Aged↗
PubMedDate not supplied

[Fibula pro radio].

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Arthrodesis↗
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Biopsy.

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Biopsy↗