title: Evaluation of the PAS-Port Proximal Anastomosis System in coronary artery bypass surgery (the EPIC trial).
abstract: OBJECTIVE
  During coronary surgery, proximal vein graft anastomoses have been performed by using an aortic partial occlusion clamp to allow for a hand-sewn anastomosis. The purpose of this multicenter, prospective, randomized trial was to evaluate the efficacy of the PAS-Port device (Cardica, Inc, Redwood City, Calif), which allows an automated proximal anastomosis to be performed without aortic clamping.
  
  
  METHODS
  Between June 22, 2006, and March 22, 2007, 220 patients requiring coronary artery bypass grafting with at least 2 vein grafts were enrolled. Within each patient, 1 graft was randomly assigned to receive a PAS-Port device, and the other was assigned to receive a hand-sewn anastomosis to the ascending aorta. The primary end point was angiographic patency (<50% stenosis) 9 months after surgical intervention. Secondary end points included average time to complete each anastomosis and 9-month freedom from major adverse cardiac events.
  
  
  RESULTS
  One hundred eighty-three patients received matched grafts that were angiographically assessed at 9 months. The 9-month graft patency was 82.0% (150/183) for hand-sewn and 80.3% (147/183) for PAS-Port grafts. The patency rate of PAS-Port anastomoses was statistically noninferior to that of hand-sewn anastomoses (95% lower confidence limit for difference, -7.95%). The freedom from major adverse cardiac events at 9 months was 97.7% for PAS-Port (95% confidence interval, 94.5%-99.0%) and 98.2% for hand-sewn (95% confidence interval, 95.1%-99.3%) grafts. The PAS-port device was associated with a 4.6 +/- 3.9-minute reduction in anastomotic time compared with that seen with a hand-sewn anastomosis (P < .001).
  
  
  CONCLUSIONS
  The PAS-Port proximal anastomotic device produces an effective anastomosis with a 9-month patency rate that is comparable with that of a hand-sewn anastomosis. It allows for construction of a proximal anastomosis without aortic clamping and requires less time than a hand-sewn anastomosis.
authors: Division of Cardiothoracic Surgery, Emory University School of Medicine, Atlanta, Georgia 30308, USA. john.puskas@emoryhealthcare.org
authors: John D
authors: JD
authors: Puskas
authors: Michael E
authors: ME
authors: Halkos
authors: Husam
authors: H
authors: Balkhy
authors: Michael
authors: M
authors: Caskey
authors: Mark
authors: M
authors: Connolly
authors: John
authors: J
authors: Crouch
authors: Anno
authors: A
authors: Diegeler
authors: Jan
authors: J
authors: Gummert
authors: Wolfgang
authors: W
authors: Harringer
authors: Valavanur
authors: V
authors: Subramanian
authors: Francis
authors: F
authors: Sutter
authors: Klaus
authors: K
authors: Matschke
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000714:Anastomosis, Surgical / Q000009:adverse effects / Q000295:instrumentation*; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000295:instrumentation* / Q000401:mortality; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015996:Survival Rate; D014654:Vascular Patency