title: Initial experience with the Nikkiso centrifugal pump during thoracoabdominal aortic aneurysm repair.
abstract: OBJECTIVE
  Several centers use atriodistal bypass (ADB) as a protective adjunct against distal ischemia during extensive thoracoabdominal aortic aneurysm (TAAA) repair. Most current ADB circuits use indirect-drive centrifugal pumps. The purpose of this report is to describe our initial clinical experience with the Nikkiso pump, a more compact direct-drive centrifugal pump recently developed at Baylor, for ADB during TAAA repair.
  
  
  METHODS
  The Nikkiso pump was used for ADB perfusion in 10 consecutive patients during graft repair of TAAAs (six Crawford extent I and four extent II). Two patients had aortic dissection. In the four patients who had extent II repairs, selective renal and visceral perfusion was also performed with the Nikkiso pump.
  
  
  RESULTS
  No mechanical pump malfunctions or adverse events related to the device occurred. All 10 patients survived and were discharged from the hospital. No patient had paraplegia after surgery. Two patients had delayed lower extremity weakness after undergoing extent I repairs; both recovered and were ambulating at the time of discharge. No complications were associated with bleeding or cerebral, respiratory, renal, or hepatic function.
  
  
  CONCLUSIONS
  Our initial experience with the Nikkiso centrifugal pump during TAAA repair demonstrated excellent pump function that provided sufficient flow for both distal aortic and selective organ perfusion. The prevention of permanent spinal cord injury and distal organ failure was successful in this group.
authors.affiliation: Department of Surgery, Baylor College of Medicine, Houston, Tex. 77030, USA.
authors.forename: J S
authors.initials: JS
authors.lastname: Coselli
authors.forename: S A
authors.initials: SA
authors.lastname: LeMaire
authors.forename: D F
authors.initials: DF
authors.lastname: Ledesma
authors.forename: S
authors.initials: S
authors.lastname: Ohtsubo
authors.forename: E
authors.initials: E
authors.lastname: Tayama
authors.forename: Y
authors.initials: Y
authors.lastname: Nosé
mesh_terms: D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000601:surgery*; D017545:Aortic Aneurysm, Thoracic / Q000601:surgery*; D004867:Equipment Design; D005260:Female; D018611:Heart Bypass, Left / Q000295:instrumentation; D006353:Heart-Assist Devices; D006801:Humans; D007431:Intraoperative Complications / Q000517:prevention & control; D007511:Ischemia / Q000517:prevention & control; D008297:Male; D011183:Postoperative Complications / Q000517:prevention & control; D013116:Spinal Cord / Q000098:blood supply