[Percutaneous coronary angioplasty and levels of endothelin-1 in blood].

Unlabelled: The aim of this study was to assess plasma endothelin-1 (ET) concentrations during percutaneous transluminal coronary angioplasty (PTCA) of the left anterio descending coronary artery (LAD). We also examined relations between plasma concentrations of ET and diameter of the PTCA-balloon. Plasma levels of ET determined by radioimmunoassay were measured in 24 patients (pts) without previous myocardial infarction undergoing PTCA of LAD.