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Clinical Trial
Journal Article
Randomized Controlled Trial
Tranexamic acid reduces bleeding after off-pump coronary artery bypass grafting.
Journal of Cardiovascular Surgery 2003 April
AIM: To assess the ability of tranexamic acid, compared with an untreated control group, to decrease bleeding and transfusion requirements in patients undergoing coronary artery bypass grafting on the beating heart.
METHODS: Forty-nine randomly selected patients were enrolled to elective coronary artery bypass grafting without the use of cardiopulmonary bypass. Of these, 23 received tranexamic acid (bolus of 1 g before surgical incision, followed by infusion 200 mg/hour during surgery) and 26 patients were enrolled into a control group. Preoperative hematological variables, postoperative blood loss at 4 and 24 hours, transfusion requirements of packed red blood cells,and postoperative thrombotic events such as a myocardial infarction, stroke and pulmonary embolism were recorded.
RESULTS: The two groups were similar in terms of patients' characteristics. Postoperative bleeding was significantly lower in the tranexamic acid group compared with the control group (median [25th-75th percentiles]): 115 [92-148] vs 230 [170-260] mL at 4 hours, p<0.001; 420 [330-523] vs 550 [500-650] mL at 24 hours, p<0.01). Transfusion requirements were lower in the tranexamic acid group compared with the control group (RBC 9% vs 28%), but the difference was not statistically significant. Treatment with tranexamic acid was not associated with a higher incidence of myocardial ischemia or other thrombotic events.
CONCLUSION: Tranexamic acid reduces postoperative blood loss after coronary artery bypass grafting on the beating heart. Evaluation of transfusion requirements warrants further study.
METHODS: Forty-nine randomly selected patients were enrolled to elective coronary artery bypass grafting without the use of cardiopulmonary bypass. Of these, 23 received tranexamic acid (bolus of 1 g before surgical incision, followed by infusion 200 mg/hour during surgery) and 26 patients were enrolled into a control group. Preoperative hematological variables, postoperative blood loss at 4 and 24 hours, transfusion requirements of packed red blood cells,and postoperative thrombotic events such as a myocardial infarction, stroke and pulmonary embolism were recorded.
RESULTS: The two groups were similar in terms of patients' characteristics. Postoperative bleeding was significantly lower in the tranexamic acid group compared with the control group (median [25th-75th percentiles]): 115 [92-148] vs 230 [170-260] mL at 4 hours, p<0.001; 420 [330-523] vs 550 [500-650] mL at 24 hours, p<0.01). Transfusion requirements were lower in the tranexamic acid group compared with the control group (RBC 9% vs 28%), but the difference was not statistically significant. Treatment with tranexamic acid was not associated with a higher incidence of myocardial ischemia or other thrombotic events.
CONCLUSION: Tranexamic acid reduces postoperative blood loss after coronary artery bypass grafting on the beating heart. Evaluation of transfusion requirements warrants further study.
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