Peroperative epicardial ultrasonography of distal coronary artery bypass graft anastomoses using a stabilizing device. A feasibility study

• Published in: Journal of cardiothoracic surgery 2020-01, Vol.15 (1), p.3-3, Article 3
• Main Authors: Andreasen, Jan Jesper, Nøhr, Dorte, Jørgensen, Alex Skovsbo, Haahr, Poul Erik
• Format: Article
• Language: English
• Subjects: Aged; Anastomosis; Anastomosis, Surgical; Complications; Coronary anastomosis; Coronary artery; Coronary Artery Bypass; Coronary bypass surgery; Coronary vessels; Coronary Vessels - diagnostic imaging; Coronary Vessels - surgery; Diagnostic imaging; Epicardial ultrasonography; Feasibility Studies; Female; Grafting; Heart surgery; Hospitals; Humans; Imaging; Intraoperative Period; Learning curves; Male; Medical research; Middle Aged; Patients; Physicians; Prospective Studies; Quality assessment; Quality control; Statistical analysis; Statistical tests; Surgeons; Surgery; Time; Titanium; Ultrasonic imaging; Ultrasonography, Interventional - instrumentation; Ultrasound; Ultrasound imaging; Veins & arteries
• ISSN: 1749-8090; 1749-8090
• DOI: 10.1186/s13019-020-1057-x

Widespread use of intraoperative epicardial ultrasonography (ECUS) for quality assessment of coronary artery bypass graft anastomoses during coronary artery bypass grafting (CABG) has not occurred - presumably due to technological and practical challenges including the need to maintain stable and optimal acoustic contact between the ultrasound probe and the target without the risk of distorting the anastomosis. We investigated the feasibility of using a stabilizing device during ultrasound imaging of distal coronary bypass graft anastomoses in patients undergoing on-pump CABG. Imaging was performed in both the longitudinal and transverse planes. Single-centre, observational prospective feasibility study among 51 patients undergoing elective, isolated on-pump CABG. Ultrasonography of peripheral coronary bypass anastomoses was performed using a stabilizing device upon which the ultrasound transducer was connected. Transit-time flow measurement (TTFM) was also performed. Descriptive statistical tests were used. Longitudinal and transverse images from the heel, middle and toe were obtained from 134 of 155 coronary anastomoses (86.5%). After the learning curve (15 patients), all six projections were obtained from 100 of 108 anastomoses scanned (93%). Failure to obtain images were typical due to a sequential curved graft with anastomoses that could not be contained in the straight cavity of the stabilizing device, echo artefacts from a Titanium clip located in the roof of the anastomoses, and challenges in interpreting the images during the learning curve. No complications were associated with the ECUS procedure. The combined ECUS and TTFM resulted in immediate revision of five peripheral anastomoses. Peroperative use of a stabilizing device during ultrasonography of coronary artery bypass anastomoses in on-pump surgery facilitates imaging and provides surgeons with non-deformed longitudinal and transverse images of all parts of the anastomoses in all coronary territories. Peroperative ECUS in addition to flow measurements has the potential to increase the likelihood of detecting technical errors in constructed anastomoses. The study was registered on September 29, 2016, ClinicalTrials.gov ID: NCT02919124.