title: [Interventional challenges due to venous occlusion during cardiac resynchronization therapy in patients with prior cardioverter-defibrillator implantation: Case report].
abstract: Cardiac resynchronization therapy has become a mainstay of treatment for advanced systolic heart failure refractory to medical management. However, several limitations may affect this therapy, including a non-response rate of nearly 30%, failure to implant the leads via conventional transvenous route in an optimal location, and inability to cannulate the coronary sinus branches due to difficult anatomy or presence of venous valves. Venous occlusion may also present as a potential obstacle in patients with prior implantation of cardioverter-defibrillator. Presently described are cases of 2 patients with venous occlusion.
authors.affiliation: Department of Cardiology, Ankara University Faculty of Medicine, Ankara, Turkey. kutayvurgun@gmail.com.
authors.forename: Veysel Kutay
authors.initials: VK
authors.lastname: Vurgun
authors.affiliation: Department of Cardiology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Ali Timuçin
authors.initials: AT
authors.lastname: Altın
authors.affiliation: Department of Cardiology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Başar
authors.initials: B
authors.lastname: Candemir
authors.affiliation: Department of Cardiology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Özgür Ulaş
authors.initials: ÖU
authors.lastname: Özcan
authors.affiliation: Department of Cardiology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Ömer
authors.initials: Ö
authors.lastname: Akyürek
mesh_terms: D001157:Arterial Occlusive Diseases; D058406:Cardiac Resynchronization Therapy; D017147:Defibrillators, Implantable; D006801:Humans