title: Analysis of coronary vascular resistance and blood flow of venous graft in coronary artery bypass grafting.
abstract: OBJECTIVE
  The aim of this study was to assess the coronary vascular resistance (CVR) and to analyze the flow differences through grafts in coronary artery bypass graft surgery.
  
  
  METHODS
  Between 17 June and 15 July 2005, we assessed the coronary vascular resistance profile in 10 patients undergoing coronary artery bypass graft surgery by grafting a section of saphenous vein and checking CVR direct (preoperative) and indirect arterial pressure and blood flow during blood cardioplegic infusion.
  
  
  RESULTS
  Significant differences between segments of coronary grafts with flow changes ranging from 36.52 to 100 ml/min were verified.
  
  
  CONCLUSIONS
  Despite various factors that contribute to success or unsuccess of coronary grafts, the CVR preoperative assessment can be a possible method to estimate blood flow through the coronary graft implant during surgical procedure.
authors.affiliation: University Hospital Dr. DomingoLeonardo Cerávolo, Medical School of the University of OestePaulista (UNOESTE - APEC) - Presidente Prudente, SP, Brazil. rmustafa@cardiol.br
authors.forename: Ricardo Migliorini
authors.initials: RM
authors.lastname: Mustafa
authors.forename: José Vladimir Hernan Quiroga
authors.initials: JV
authors.lastname: Verazain
authors.forename: Margaret Assad
authors.initials: MA
authors.lastname: Cavalcante
authors.forename: Fabiano Carazzai
authors.initials: FC
authors.lastname: Pacheco
authors.forename: Henrique Issa Artoni
authors.initials: HI
authors.lastname: Ebaid
authors.forename: Paulo Henrique
authors.initials: PH
authors.lastname: Jorge
authors.forename: Orlando Henrique de
authors.initials: OH
authors.lastname: Melo Sobrinho
authors.forename: Ureliano Cintra e
authors.initials: UC
authors.lastname: Reis
mesh_terms: D001794:Blood Pressure / Q000502:physiology; D001026:Coronary Artery Bypass; D003326:Coronary Circulation / Q000502:physiology*; D006801:Humans; D011300:Preoperative Care; D012501:Saphenous Vein / Q000637:transplantation; D014655:Vascular Resistance / Q000502:physiology*