Impact of Tranexamic Acid on Red Blood Cell Transfusion in Spinal Surgery
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Purpose
Spinal surgery may be associated with substantial blood loss which often requires erythrocyte transfusion. Transfusion of RBCs is not free of adverse events and has been associated with increased risks of infection, and globally higher morbidity and mortality.
Different techniques have been used to reduce perioperative blood losses and related transfusions. Tranexamic acid has been used successfully in cardiac and hepatic surgery. However, only a few studies have reported on the use of antifibrinolytic drugs in spinal surgery.
This study was designed to assess the efficacy and safety of tranexamic acid in spinal surgery for the reduction of RBC transfusion.
Hypothesis: the infusion of tranexamic acid during spinal surgery will reduce the risk of receiving a RBC transfusion and, in those patients transfused, reduce the number of blood products administered.
| Condition | Intervention |
|---|---|
|
Neurosurgery Orthopedic Surgery Red Blood Cell Transfusion |
Drug: Tranexamic Acid Drug: Placebo |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Parallel Assignment Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor) Primary Purpose: Treatment |
| Official Title: | Impact of Tranexamic Acid on Red Blood Cell Transfusion in Spinal Surgery |
- Percentage of patients transfusions [ Time Frame: From surgery until 72 hours postoperatively ] [ Designated as safety issue: Yes ]
- Number of red blood cell transfusions [ Time Frame: From surgery until 72 hours postoperatively ] [ Designated as safety issue: Yes ]
- Measured blood losses [ Time Frame: From surgery until 72 hours postoperatively ] [ Designated as safety issue: Yes ]
- Morbidity [ Time Frame: From surgery until 30 days postoperatively ] [ Designated as safety issue: Yes ]Deep vein thrombosis, pulmonary embolism, seizures, myocardial infarction, renal failure
- Mortality [ Time Frame: From surgery until 30 days postoperatively ] [ Designated as safety issue: Yes ]
- Length of stay in the hospital [ Time Frame: At time of discharge ] [ Designated as safety issue: No ]
- Calculated blood losses [ Time Frame: From surgery until 72 hours postoperatively ] [ Designated as safety issue: Yes ]
| Estimated Enrollment: | 128 |
| Study Start Date: | April 2011 |
| Estimated Study Completion Date: | December 2013 |
| Estimated Primary Completion Date: | October 2013 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Experimental: Tranexamic acid
Study subjects will be randomized to receive a bolus dose of 30 mg/kg of tranexamic acid administered over 30 minutes starting after the induction of anesthesia followed by a continuous intravenous infusion of tranexamic acid of 16 mg/kg/h administered up to 6 hours after surgery.
|
Drug: Tranexamic Acid
Bolus dose of 30 mg/kg of tranexamic acid followed by a continuous intravenous infusion of 16 mg/kg/h of tranexamic acid administered up to 6 hours after surgery.
|
|
Placebo Comparator: Normal saline (NaCl 0.9%)
Study subjects will be randomized to receive a bolus dose of normal saline (NaCl 0.9%) of equivalent volume administered over 30 minutes starting after the induction of anesthesia followed by a continuous intravenous infusion of NaCl 0.9% administered up to 6 hours after surgery.
|
Drug: Placebo
Bolus dose of normal saline (NaCl 0.9%) of equivalent volume followed by a continuous intravenous infusion of NaCl 0.9% administered up to 6 hours after surgery.
|
Detailed Description:
Administration of study drug
The administration of tranexamic acid/placebo will start following the induction of general anesthesia. A bolus dose will be given intravenously over 30 minutes followed by a continuous infusion administered up to 6 hours postoperatively.
Drugs used for anesthesia and postoperative analgesia will be left to the discretion of the attending anesthesiologist. The administration of fluids (crystalloids, colloids and blood products) will be recorded.
Transfusion: The transfusion trigger will be < 80 g/L during surgery if the situation is stable. Transfusion may be initiated according to the attending anesthesiologist if the situation is unstable. In the case of massive bleeding, transfusion will follow our standard institutional protocol. The presence of microvascular bleeding at the surgical site will be assessed by the surgeon. The Cellsaver will not be used.
The transfusion trigger during the postoperative period will be < 80 g/L. Blood losses and the need for transfusion will be recorded from the moment of surgery up to 72 hours postoperatively.
Laboratory testing
Before surgery: hemoglobin and coagulogram values will be recorded.
During surgery: the patient's coagulation status will be assessed using a thromboelastograph (TEG). Thromboelastography is a simple coagulation test that enables evaluation of all components of hemostasis. TEG testing will be performed at the induction of anesthesia and every 2 hours throughout surgery. An additional blood sample for TEG analysis will be collected at the end of surgery if the previous test was performed more than an hour before the end of surgery.
After surgery: laboratory testing for hemoglobin, coagulogram, fibrinogen and d-dimer will be performed in the recovery room. Hemoglobin will also be measured on postoperative days 1, 2 and 3. Blood samples to assess cardiac troponin levels will be collected on postoperative days 1 and 2.
Ultrasound : Patients will have an ultrasound examination of the inferior limbs before discharge from the hospital to detect deep vein thrombosis.
Follow-up The presence of adverse events during the course of the hospital stay will be noted.
At 30 days, patients will be contacted by phone to detect any other adverse events.
Eligibility| Ages Eligible for Study: | 18 Years to 85 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Patients aged 18 to 85 years
- Patients undergoing spinal surgery with expected significant blood loss
- Physical status ASA I to III inclusive
Exclusion Criteria:
- Allergy to tranexamic acid
- Epilepsy
- Minimally invasive surgery
- Unwillingness to receive blood transfusion
- Known coagulopathy/hepatic disease
- Previous thromboembolic events
- Pregnancy
- Renal impairment
Contacts and Locations| Contact: Jean-François Hardy, MD, FRCPC | 514-890-8000 ext 26876 | jean-francois.hardy@umontreal.ca |
| Canada, Quebec | |
| Centre Hospitalier de l'Université de Montréal-Hôpital Notre-Dame | Recruiting |
| Montreal, Quebec, Canada, H2L 4M1 | |
| Contact: Jean-François Hardy, MD, FRCPC 514-890-8000 ext 26876 jean-francois.hardy@umontreal.ca | |
| Contact: Monique Ruel, RN, CCRP 514-890-8000 ext 24542 monique.m.ruel.chum@ssss.gouv.qc.ca | |
| Sub-Investigator: Véronique Brulotte, MD | |
| Sub-Investigator: Qian Wu, MD | |
| Principal Investigator: | Jean-François Hardy, MD, FRCPC | Centre hospitalier de l'Université de Montréal (CHUM) |
More Information
No publications provided
| Responsible Party: | Centre hospitalier de l'Université de Montréal (CHUM) |
| ClinicalTrials.gov Identifier: | NCT01258010 History of Changes |
| Other Study ID Numbers: | JFH2011-001 |
| Study First Received: | December 8, 2010 |
| Last Updated: | December 12, 2012 |
| Health Authority: | Canada: Ethics Review Committee |
Keywords provided by Centre hospitalier de l'Université de Montréal (CHUM):
|
Red blood cell transfusion Neurosurgery Orthopedic surgery Tranexamic acid Surgical blood loss |
Additional relevant MeSH terms:
|
Tranexamic Acid Antifibrinolytic Agents Fibrin Modulating Agents Molecular Mechanisms of Pharmacological Action Pharmacologic Actions |
Hemostatics Coagulants Hematologic Agents Therapeutic Uses |
ClinicalTrials.gov processed this record on May 23, 2013