title: Focal extra strength of a stent causing instent hourglass stenosis: an unusual complication.
abstract: We report an unusual complication of a 25 mm long stent, which did not expand at all for 1 mm in its proximal segment, while rest of the 24 mm length of the stent got fully expanded. Repeated attempts to expand the extremely focal unexpanded part of the stent at high pressure led to rupture of the stent balloon and its entrapment. We failed to retrieve the balloon using various techniques and the patient had to be sent for coronary artery bypass graft surgery.
authors.affiliation: Department of Cardiology, GB Pant Hospital, New Delhi.
authors.forename: Vijay
authors.initials: V
authors.lastname: Trehan
authors.forename: Saibal
authors.initials: S
authors.lastname: Mukhopadhyay
authors.forename: Vineet
authors.initials: V
authors.lastname: Lain
authors.forename: Jamal
authors.initials: J
authors.lastname: Yusuf
authors.forename: Vimal
authors.initials: V
authors.lastname: Mehta
authors.forename: Umamahesh C
authors.initials: UC
authors.lastname: Rangasetty
mesh_terms: D000789:Angina, Unstable / Q000601:surgery; D015906:Angioplasty, Balloon, Coronary; D003251:Constriction, Pathologic / Q000209:etiology*; D001026:Coronary Artery Bypass; D003331:Coronary Vessels / Q000473:pathology* / Q000601:surgery; D004632:Emergency Medical Services; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology*; D015607:Stents / Q000009:adverse effects*