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- W2169766323 abstract "Our objective was to evaluate the safety of coronary anastomosis on the beating heart by measuring the release of cardiac troponin I during minimally invasive coronary artery bypass grafting (MICABG). Cardiac troponin I (cTnI) is a reliable marker of cardiac ischemia during heart operations under cardiopulmonary bypass (CPB). Ten patients (8 males and 2 females, aged 41–63) underwent MICABG with single vessel bypass grafting for left anterior descending coronary artery (LAD) stenosis (n = 7) or occlusion (n = 3). Video‐assisted surgery with left anterior minithoracotomy was performed in all patients. Serial venous blood samples were collected for measurement of cTnI before LAD occlusion (T0), during anastomosis (T1) and 10 min (T2), 6 h (T3), 24 h (T4), 48 h (T5), and 72 h (T6) after coronary reperfusion. The assay method used a specific enzyme‐linked immunosorbent Stratus autoanalyzer. Control coronary angiography was performed in all patients. There were no operative complications or reoperations for bleeding. The cTnI concentrations were expressed in ng/ml ± SD. The mean cTnI level was less than 3.05 ± 0.2 ng/ml (range 0–32.8). Values were T0 = 0, T1 = 0.4 ± 0.03, T2 = 1.15 ± 0.2, T3 = 2.16 ± 0.6, T4 = 1.5 ± 0.3, T5 = 0.6 ± 0.02, and T6 = 0.4 ± 0.01. Angiography showed patent grafts in 9 patients. In one case, early internal thoracic artery (ITA) graft occlusion in a patient with 2 vessel disease was correlated with a higher cTnI concentration (17.8 ng/ml). Percutaneous angioplasty was performed on the right coronary artery, complicated with dissection and cardiac failure. This patient died 3 months after the MICABG despite support from a ventricular assist device. In conclusion, collateral circulation developed in the setting of chronic coronary occlusion may be efficient for myocardial preservation during short periods such as coronary anastomosis. cTnI immunoassay confirmed the safety of coronary anastomosis on the beating heart during minimally invasive coronary operations." @default.
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- W2169766323 date "1998-06-01" @default.
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- W2169766323 title "Safety of Beating Heart Anastomosis During Video‐Assisted Coronary Surgery Attested by Cardiac Troponin I" @default.
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- W2169766323 doi "https://doi.org/10.1046/j.1525-1594.1998.06144.x" @default.
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