Discomfort assessment in peripheral angiography: randomized clinical trial of Iodixanol 270 versus Ioversol 320 in diabetics with critical limb ischemia.

Objectives: To assess and compare the intra-arterial injection-associated discomfort of iodinated contrast media (CM) and the impact on diagnostic efficacy in diabetics with critical limb ischemia (CLI).

Background: Arterial revascularization is a mainstay in patients with CLI. Previous diagnostic angiography is a crucial step that can be affected by CM injection discomfort compromising the revascularization results, and it could vary related to the CM agents.

Factors influencing the age at which adolescents start smoking. A comparison between a big and a small city.

Background: Most cigarette smokers take up their habit during adolescence. The aim of this study was to compare the age at which the students of a metropolitan high school and those of a non-metropolitan high school start smoking.

Methods: Nine hundred and seventy-eight students (55.