title: Relationship of Intraoperative Transit Time Flowmetry Findings to Angiographic Graft Patency at Follow-Up.
abstract: Early and late graft occlusion remains a significant complication of coronary artery bypass grafting. Transit time flowmetry is the most commonly used imaging technique to assess graft patency intraoperatively. Although the value of transit time flowmetry for intraoperative quality control of coronary anastomosis is well established, its standard variables for predicting eventual graft failure remain controversial. This review readdresses the issue of intraoperative transit time flowmetry, with a particular emphasis on defining cutoff values for standard variables and correlating them with the ability to predict midterm and long-term graft patency for arterial and venous conduits. Further research is warranted to support clinically useful recommendations on the intraoperative application and interpretation of transit time flowmetry.
authors.affiliation: Department of Cardiovascular Surgery, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
authors.forename: Sanaz
authors.initials: S
authors.lastname: Amin
authors.affiliation: Department of Cardiac Surgery, Oxford University Hospitals Trust, Oxford, United Kingdom. Electronic address: anacatarina.pinhogomes@gmail.com.
authors.forename: Ana-Catarina
authors.initials: AC
authors.lastname: Pinho-Gomes
authors.affiliation: Department of Cardiovascular Surgery, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom; Department of Cardiac Surgery, Oxford University Hospitals Trust, Oxford, United Kingdom.
authors.forename: David P
authors.initials: DP
authors.lastname: Taggart
mesh_terms: D017023:Coronary Angiography; D001026:Coronary Artery Bypass; D023903:Coronary Restenosis / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D007430:Intraoperative Care / Q000379:methods*; D063177:Pulse Wave Analysis; D012212:Rheology / Q000379:methods*; D016896:Treatment Outcome; D014654:Vascular Patency