title: Balloon Blocking Technique (BBT) for Superselective Catheterization of Inaccessible Arteries with Conventional and Modified Techniques.
abstract: OBJECTIVE
  The purpose of the study was to retrospectively evaluate the efficacy and safety of the balloon blocking technique (BBT).
  
  
  METHODS
  The BBT was performed in six patients (all males, mean 73.5 years) in whom superselective catheterization for transcatheter arterial embolization by the conventional microcatheter techniques had failed due to anatomical difficulty, including targeted arteries originating steeply or hooked from parent arteries. All BBT procedures were performed using Seldinger's transfemoral method. Occlusive balloons were deployed and inflated at the distal side of the target artery branching site in the parent artery via transfemoral access. A microcatheter was delivered from a 5-F catheter via another femoral access and was advanced over the microguidewire into the target artery, under balloon blockage of advancement of the microguidewire into non-target branches. After the balloon catheter was deflated and withdrawn, optimal interventions were performed through the microcatheter.
  
  
  RESULTS
  After success of accessing the targeted artery by BBT, optimal interventions were accomplished in all patients with no complications other than vasovagal hypotension, which responded to nominal therapy.
  
  
  CONCLUSIONS
  The BBT may be useful in superselective catheterization of inaccessible arteries due to anatomical difficulties.
authors.affiliation: Department of Diagnostic Radiology, Japan Red Cross Kyoto Daiichi Hospital, 15-749 Honmachi, Higashiyama, Kyoto, 605-0981, Japan. hmorif@koto.kpu-m.ac.jp.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Morishita
authors.affiliation: Department of Radiology, North Medical Center, Kyoto Prefectural University of Medicine, 481 Otokoyama, Yosanocho, Yosagun, Kyoto, 629-2261, Japan.
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Takeuchi
authors.affiliation: Department of Diagnostic Radiology, Japan Red Cross Kyoto Daiichi Hospital, 15-749 Honmachi, Higashiyama, Kyoto, 605-0981, Japan.
authors.forename: Takaaki
authors.initials: T
authors.lastname: Ito
authors.affiliation: Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyou, Kyoto, 602-8566, Japan.
authors.forename: Natsuko
authors.initials: N
authors.lastname: Hayashi
authors.affiliation: Department of Diagnostic Radiology, Japan Red Cross Kyoto Daiichi Hospital, 15-749 Honmachi, Higashiyama, Kyoto, 605-0981, Japan.
authors.forename: Osamu
authors.initials: O
authors.lastname: Sato
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017541:Aneurysm, False / Q000628:therapy*; D021721:Balloon Occlusion / Q000295:instrumentation* / Q000379:methods*; D006528:Carcinoma, Hepatocellular / Q000628:therapy*; D004378:Duodenal Diseases / Q000628:therapy*; D004867:Equipment Design; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000628:therapy*; D006801:Humans; D008113:Liver Neoplasms / Q000556:secondary / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013736:Testicular Neoplasms / Q000628:therapy; D016896:Treatment Outcome
keywords: Balloon catheter; Selective catheterization; Transcatheter arterial embolization