Cardiomed Coronary Flow Meter for Prevention of Early Occlusion in Aortocoronary Bypass Grafting

Relationship of Intraoperative Transit Time Flowmetry Findings to Angiographic Graft Patency at Follow-Up

“…Intraoperative graft failure can be due to technical problems, for example, kinking or twisting of the graft, linear tension due to insufficient graft length, or thrombus or stenosis in the conduit, but intraoperative graft failure is most frequently due to inappropriate construction of the anastomosis [9].…”

Transesophageal Echocardiographic Estimation of Coronary Sinus Blood Flow for Predicting Favorable Postoperative Transit Time Coronary Graft Flow Measurements: A Pilot Study

“…18 Inappropriate anastomotic construction, in addition to other factors such as graft tension emanating from an insufficient length, kinking or twisting, or a conduit thrombus, all contribute to an intraoperative graft failure. 19 Conventionally surgeons rely on digital palpation of graft pulsation to ascertain the functioning of a coronary artery graft. 20 The subjectivity of this method has prompted the introduction of more objective methods of graft flow assessment in the last decade.…”

“…10,17,[21][22][23][24][25][26] TTF measurement has proven to be a suitable method for a lucid and reproducible functional assessment of the coronary grafts. 10,19,[25][26][27][28][29] The most recent European guidelines 30 and the retrospective study of patients involved in Randomized On/Off Bypass (ROOBY) trial also suggested that intraoperative TTF probe data may be instrumental in contemplating a decision to revise a questionable coronary graft and predicting long-term patency. 31 This modality delineates the volumetric flow pattern with the computation of DF and PI.…”

Intraoperative transit-time flow measurement in on-pump coronary artery bypass graft surgery: Single center experience

“…However, it can often occur due to failure registered during the formation of anastomosis. [13,14] Several techniques have been used in the past to perform intraoperative assessment of graft patency. Electromagnetic flow meters which were initially adopted for use in coronary surgery have recently been replaced by ultrasonic technology (Doppler and TTFM).…”