LAUSR

https://e-kcj.org A 52-year-old man who underwent stent implantation in the coronary artery via right transradial access (TRA) with 6F sheath 10 years ago was admitted to the emergency room due to chest pain. Coronary artery angiography was performed via distal radial access at anatomical snuffbox because of prior history of radial access and chronic kidney disease.1)2) When the wire and catheter went up to the radial artery, the operator felt some resistance. After successful primary distal transrdial intervention for acute myocardial infarction, angiography at right radial artery via sheath at anatomical snuffbox revealed intraluminal hazziness at radial artery which had been punctured for previous intervention 10 years ago (Figure 1). The lesion was examined with optical coherence tomography (OCT; DragonflyTM OPTISTM Imaging Catheter; Abbott, Abbott Park, IL, USA, pullback speed: survery mode 36 mm/sec, maximal contrast dose: 8 mL at 4 mL/sec). Because of arterial dissection issue, Korean Circ J. 2020 Nov;50(11):1045-1047 https://doi.org/10.4070/kcj.2020.0110 pISSN 1738-5520·eISSN 1738-5555