title: Systolic cessation of the flow in the mid stent segment of the previously stented ostial vein graft with normal flow during diastole. A case report and brief review.
abstract: We present a case of intermittent cessation of blood flow through stent struts during systole, with normal flow during diastole in the previously stented ostial vein graft. After reviewing the initial procedure, we discovered that the operator had difficulty in positioning the stent. After stent deployment, the ostial stent was malpositioned and was protruding more than 50% into the aorta. During systole, the contrast in the stent struts, which are situated in the aorta, was being washed off by systolic blood flow, while in the diastole, the flow of contrast was normal. This is the first case report of this observation with a brief review.
authors.affiliation: Division of Cardiology, Department of Medicine, University of California, Irvine Medical Center, Orange, CA 92868-4080, USA. mmohaved@uci.edu
authors.forename: Mohammad-Reza
authors.initials: MR
authors.lastname: Movahed
authors.forename: Tony
authors.initials: T
authors.lastname: Ngoc Nguyen
authors.forename: Kent
authors.initials: K
authors.lastname: McAllister
authors.forename: Jenchen
authors.initials: J
authors.lastname: Yang
mesh_terms: D000368:Aged; D001011:Aorta / Q000473:pathology; D001783:Blood Flow Velocity; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects; D003287:Contrast Media / Q000008:administration & dosage; D017023:Coronary Angiography; D001026:Coronary Artery Bypass; D003326:Coronary Circulation; D003971:Diastole; D005548:Foreign-Body Migration / Q000150:complications / Q000000981:diagnostic imaging; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D008297:Male; D015607:Stents / Q000009:adverse effects*; D013599:Systole
chemical_list: D003287:Contrast Media