ReviewsIntraoperative graft verification in coronary surgeryDi Giammarco, Gabriele; Marinelli, Daniele; Foschi, Massimiliano; Di Mauro, Michele Author Information Department of Cardiac Surgery, University ‘G. D’Annunzio’, Chieti, Italy Correspondence to Gabriele Di Giammarco, MD, Professor of Cardiac Surgery, University of Chieti-Pescara, Clinica Cardiochirurgica, Ospedale ‘SS.Annunziata’, Via dei Vestini, 66100 Chieti, Italy Tel: +39 0871 358628; fax: +39 0871 357552; e-mail: [email protected] Received 7 December, 2015 Revised 22 February, 2016 Accepted 7 April, 2016 Journal of Cardiovascular Medicine: May 2017 - Volume 18 - Issue 5 - p 295-304 doi: 10.2459/JCM.0000000000000401 Buy Metrics Abstract Transit-time flow measurement (TTFM) is a reliable method to check the graft function intraoperatively in coronary surgery. The given parameters are: Mean Graft Flow (MGF); Pulsatility Index (PI) and Insufficiency Ratio (%BF). Some cutoffs of these parameters have been identified as predictors for unfair 1-y clinical outcome: mean graft flow (MGF) less than 20 ml/min and high pulsatility index greater than 5. Other cutoffs have been found as related to postoperative angiography: MGF 15 ml/min or less and pulsatility index at least 3 (sensitivity 94%; specificity 61%); MGF less than 15 ml/min and pulsatility index greater than 3 for left coronary artery or pulsatility index greater than 5 for right coronary artery (sensitivity 96%; specificity 77%); MGF 15 ml/min or less and pulsatility index at least 5.1 left coronary artery (sensitivity 98%; specificity 26%). Hence, with the need to improve the diagnostic accuracy of TTFM, high-resolution epicardic coronary ultrasound module has been added to graft flow evaluation providing 2D ultrasound imaging (either in short-axis or long-axis) and color-flow mapping, allowing an accurate morphological evaluation of body graft and anastomosis. An intraoperative method aimed to verify coronary grafts should be easy to handle, not time consuming, minimally invasive, easily meaningful and relatively cheap; in addition, it should offer objective parameters more than qualitative criteria. We herein report the results of our experience with intraoperative graft verification with TTFM and high-resolution imaging along with a systematic review of the literature in this field with the aim to provide a road map to be followed. © 2017 Italian Federation of Cardiology. All rights reserved.