Frequencia de aterosclerose nas arterias radiais de 29 cadaveres / Frequency of atherosclerosis in radial arteries of 29 cadavers

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The use of radial artery as a coronary artery bypass graft increased since 1992. It is justified that arterial grafts theoretically would last more than venous grafts. But radial arteries could have atherosclerotic obstructions before cardiac bypass grafting surgery. The objective of this study is to verify the incidence of atherosclerotic obstructions and microscopic atherosclerotic lesions in radial arteries dissected from cadavers with 35 or more of age. Methods: 29 cadavers had both radial arteries dissected as if they were utilized as a coronary artery bypass graft. An angiogram was performed to determine atherosclerotic obstruction of the radial artery. After that, 3 fragments of the artery (proximal, medial, distal) were prepared in haematoxilin-eosin microscopic slides in the aim to detect microscopical atherosclerotic lesions. Results were confronted with risk factor found in cadaver?s story: age, sex, hypertension, diabetes, smoking story, myocardial infarctation, stroke, peripheral vascular disease, obesity, family story. Results: No obstructive lesions were found in the angiogram. Four cadavers presented microscopic atherosclerotic and pre-atherosclerotic lesions. Among the risk factors studied, only age was correlated with microscopic lesions. The arteries measured 19.22 cm (mean) in males, 17.45 cm (mean) in females. Its diameters were 1.87 mm in males, 1.72 in females. There were no correlation between the risk factors studied and presence of microscopical atherosclerotis lesions. Conclusions: No atherosclerotic obstructions were found in the radial arteries of those cadavers

ASSUNTO(S)

artery cardiac surgical procedures arteriosclerose procedimentos cirurgicos cardiacos arteria arteriosclerosis

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