title: A first-in-man study of the Reitan catheter pump for circulatory support in patients undergoing high-risk percutaneous coronary intervention.
abstract: OBJECTIVE
  To investigate the safety of a novel percutaneous circulatory support device during high-risk percutaneous coronary intervention (PCI).
  
  
  BACKGROUND
  The Reitan catheter pump (RCP) consists of a catheter-mounted pump-head with a foldable propeller and surrounding cage. Positioned in the descending aorta the pump creates a pressure gradient, reducing afterload and enhancing organ perfusion.
  
  
  METHODS
  Ten consecutive patients requiring circulatory support underwent PCI; mean age 71 +/- 9; LVEF 34% +/- 11%; jeopardy score 8 +/- 2.3. The RCP was inserted via the femoral artery. Hemostasis was achieved using Perclose sutures. PCI was performed via the radial artery. Outcomes included in-hospital death, MI, stroke, and vascular injury. Hemoglobin (Hb), free plasma Hb (fHb), platelets, and creatinine (cre) were measured pre PCI and post RCP removal.
  
  
  RESULTS
  The pump was inserted and operated successfully in 9/10 cases (median 79 min). Propeller rotation at 10,444 +/- 1,424 rpm maintained an aortic gradient of 9.8 +/- 2 mm Hg. Although fHb increased, there was no significant hemolysis (4.7 +/- 2.4 mg/dl pre vs. 11.9 +/- 10.5 post, P = 0.04, reference 20 mg/dl). Platelets were unchanged (pre 257 +/- 74 x 10(9) vs. 245 +/- 63, P = NS). Renal function improved (cre pre 110 +/- 27 micromol/l vs. 99 +/- 28, P = 0.004). The RCP was not used in one patient following femoral introducer sheath related aortic dissection. All PCI procedures were successful with no deaths or strokes, one MI, and no vascular complications following pump removal.
  
  
  CONCLUSIONS
  The RCP can be used safely in high-risk PCI patients. This device may be an alternative to other percutaneous systems when substantial cardiac support is needed.
authors.affiliation: Department of Cardiology, London Chest Hospital, United Kingdom.
authors.forename: Elliot J
authors.initials: EJ
authors.lastname: Smith
authors.forename: Oyvind
authors.initials: O
authors.lastname: Reitan
authors.forename: Thomas
authors.initials: T
authors.lastname: Keeble
authors.forename: Kerry
authors.initials: K
authors.lastname: Dixon
authors.forename: Martin T
authors.initials: MT
authors.lastname: Rothman
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000295:instrumentation*; D001011:Aorta / Q000503:physiopathology; D001794:Blood Pressure; D003324:Coronary Artery Disease / Q000503:physiopathology / Q000628:therapy*; D003404:Creatinine / Q000097:blood; D004867:Equipment Design; D005240:Feasibility Studies; D005260:Female; D006353:Heart-Assist Devices; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007668:Kidney / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010976:Platelet Count; D018570:Risk Assessment; D013318:Stroke Volume; D016896:Treatment Outcome; D016277:Ventricular Function, Left
chemical_list: D006454:Hemoglobins; D003404:Creatinine