Exaggerated luminal loss a few minutes after successful percutaneous transluminal coronary angioplasty in patients with recent myocardial infarction compared with stable angina: An intracoronary ultrasound study

Oestrogen attenuates coronary vasoconstriction after angioplasty: role of endothelin‐1

“…Diagnostic left heart catheterization and angiography were performed from a femoral approach as described previously [16]. After completion of the diagnostic catheterization, intravenous heparin was supplemented to maintain activated clotting time at 300 -350 s, and a 6F Judkins guiding catheter was advanced to the ostium of the left coronary artery.…”

“…For each lesion, the view showing the most severe degree of stenosis was used for analysis. Quantitative measurements of coronary artery dimensions were made using a computer-based edge enhancement technique (DCI System, Philips, Inc., Best, the Netherlands), as previously described [16,20]. All injections and projections throughout a given study were performed by the same operator (T-M.L.)…”

“…Each segment was analysed during end-diastole to measure coronary diameters at the same levels, for each patient. We have had experience with quantitative coronary arteriography [16,20]; the intraobserver and interobserver variabilities at the proximal segments were 0·18 ± 0·15 mm (5·7 ± 6·2%) and 0·21 ± 0·23 mm (6·7 ± 6·8%), respectively.…”

Diretriz de indicações do ultra-som intracoronariano na prática clínica

“…É interessante ressaltar que não houve correlação entre as características morfológicas das lesões encontradas no ultra-som e na angiografia coronariana, sendo que o ultra-som apresentou 44 . Na vigência de infarto agudo do miocárdio, também foi realizada a análise da placa aterosclerótica [45][46][47][48][49] . A detecção da presença de trombos nestes estudos foi alta, variando de 70% a 90%, e, quando o ultra-som foi comparado à histologia, a taxa de acurácia foi de 80% 37 .…”