Comparing Intraoperative Flow Measurement in Both off-Pump Coronary Artery Bypass and on-Pump Coronary Artery Bypass Graft Patients | ||||
| The Medical Journal of Cairo University | ||||
| Article 62, Volume 86, September, September 2018, Page 2645-2649 PDF (532.85 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjcu.2018.59600 | ||||
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| Authors | ||||
| MOHAMMED SHAFIK, M.D.; SALEH R. HUSSEIN, M.D.; MOHAMMED EL-SAYED, M.D.; AL-SAYED M. SALEM, M.D.; KAREEM ZAYED, M.Sc. | ||||
| The Department of Cardiothoracic Surgery, National Heart Institute** and Al-Azhar University*, Al-Hussein Hospital, Cairo, Egypt | ||||
| Abstract | ||||
| Abstract Background: Patent bypass grafts are fundamental to successful coronary artery bypass grafting. We studied the use of transit-time flow measurement to determine its ability to detect technical errors in grafts, to measure the mean flow norms, and to compare flow in both on-pump and off-pump CABG procedures. Aim of Study: To compare conduit flow in a standardized type of CABG and OPCAB using the Left Internal Mammary Artery (LIMA) and vein grafts. Patients and Methods: This study was conducted on 60 patients requiring coronary artery bypass surgery classified into 2 equal groups: •Group A: (Conventional CABG), who were approached through on pump CABG. •Group B: (OPCAB), whom approached without cardiopul-monary bypass machine. Results: There was no statistical difference between the two groups in baseline pre-operative characteristics regarding their age, sex, NYHA class and EF%. In Group (A), the MGF was (39.51±5.26) and PI values were (2.33±0.64). While in Group (B), the MGF was (32.71± 6.47) and PI measurements were (2.71±1.22). The MGF for the occluded grafts in Group A was (14.33±3.21) ml min and (12.75±2.87) in Group B (p=.522). The corresponding PI values were (8.03±1.0) for Group A and (8.85±1.67) for Group B (p=0.489). Conclusions: TTFM technique is a highly valuable equip-ment. Mean flow is lower in the OPCAB group with higher pulsatility index than the conventional CABG group, which raises suspicion about the long term patency of OPCAB grafts. | ||||
| Keywords | ||||
| Coronary artery bypass grafting – Transit-time flow measurement – Graft patency | ||||
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