Two Different Tranexamic Acid Regimens in Coronary Artery Bypass Surgery

Study Overview
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Brief Summary
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The primary aim of this study is to observe the effects of two different methods of administering tranexamic acid (i.v. bolus and i.v. infusion) routinely used intraoperatively in cardiovascular surgery, on patients' postoperative bleeding amounts. According to the hypothesis established in this study, it is anticipated that administering tranexamic acid as an i.v. bolus dose followed by an 8-hour continuous infusion will result in a more stable blood level compared to the sole i.v. bolus application, thereby being more effective in influencing postoperative bleeding levels. The study has been designed as a prospective observational research. The outcomes of two different tranexamic acid protocols applied during cardiovascular surgical procedures will be compared. The first group will consist of patients who receive a 10 mg/kg i.v. bolus of tranexamic acid after anesthesia induction, followed by an 8-hour i.v. tranexamic acid infusion at a dose of 2 mg/kg/hour. Group 2 will consist of patients who receive three doses of tranexamic acid, 10 mg/kg i.v. bolus after anesthesia induction, in the pump, and after protamine sulfate administration. The cases collected over a period of 6 months will be divided into two groups and compared in terms of intraoperative and postoperative bleeding levels, as well as their need for blood products.

Official Title
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The Effect of Two Different Tranexamic Acid Dose Regimens on Intraoperative and Postoperative Bleeding in Coronary Artery Bypass Surgery

Conditions
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Postoperative Hemorrhage

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients who have coronary artery disease requiring coronary artery bypass surgery with cardiopulmonary bypass and received intravenous tranexamic acid either as a bolus or infusion during the intraoperative period will be included in the study. Wrriten consent obtained Exclusion Criteria: Patients operated on for reasons other than coronary artery bypass surgery Patients who operated on as emergencies Patients who have preoperative liver/renal dysfunction or a history of cerebrovascular events Patients under the age of 18 Patients who have coagulation disorder Patients who have a history of allergies Pregnancy or lactation Disabled in spirit or law

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group 1<br>Patients who have undergone coronary artery bypass surgery and received intravenous tranexamic acid either as a bolus or infusion during the intraoperative period will be included in the study. The cases collected over a period of 6 months will be divided into two groups and compared. The first group will consist of patients who receive a 10 mg/kg i.v. bolus of tranexamic acid after anesthesia induction, followed by an 8-hour i.v. tranexamic acid infusion at a dose of 2 mg/kg/hour. | |
| Group 2<br>Group 2 will consist of patients who receive three doses of tranexamic acid, 10 mg/kg i.v. bolus after anesthesia induction, in the pump, and after protamine sulfate administration. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Postoperative hemorrhage | The amount of bleeding within the first 24 hours postoperatively will be compared. | Postoperative 1st, 6th and 24th hours | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Postoperative hemorrhage | The amounts of blood and blood products administered within the first 24 hours of postoperative | Postoperative first 24 hours | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Tranexamic acid, Coronary artery bypass, Hemorrhage