Vulnerable carina anatomy and XXXX in the left anterior descending coronary artery after floating-stent treatment.

@entity75 @entity1 @entity1317 @entity130
INTRODUCTION AND OBJECTIVES: Percutaneous coronary intervention for @entity75 of the left anterior descending coronary artery (LAD) remains a complex procedure. The aim of this study was to evaluate the usefulness of a method of treatment that we have termed the floating-stent approach. METHODS: The study involved 71 @entity1 with @entity75 who underwent implantation of a drug-eluting stent in the LAD, which totally or partially covered the ostium of the circumflex artery. No further interventions were planned. Intravascular ultrasound was performed both at baseline and after treatment in 49 @entity1 . All were followed up clinically (16+/-12 months). RESULTS: Angiography of the LAD demonstrated an immediate success rate of 100%. However, significant focal damage was observed in the circumflex ostium in 7 (10%) @entity1 , three of whom needed treatment. The mean protrusion of the stent over the origin of the circumflex artery was 2.48+/-0.91 mm. The only predictor of circumflex @entity130 identified in the study was the carina having a spiky appearance on intravascular ultrasound, visible in the longitudinal view. We termed this feature the "eyebrow sign". Carina displacement was responsible for the focal damage in 13 of the 14 @entity1 with this feature. Overall, the major cardiac adverse event rate during follow-up was 4%. CONCLUSIONS: Use of the floating-stent technique for treating @entity75 was straightforward and gave excellent medium-term RESULTS: Intravascular ultrasound showed that @entity1 who had a carina with specific vulnerable anatomical features were predisposed to circumflex @entity1317 .
