Coronary Artery Disease
Conditions
Keywords
Heparin, Coronary artery bypass graft surgery, Anti-coagulation efficacy
Brief summary
Heparin, a blood thinner, is used routinely in Open-heart surgery. Do different brands of this drug have differing clinical effects despite both having exactly the same regulation and marketing specifications?
Interventions
400 units per kilogram bolus prior to initiation of CPB
400 unit per kilogram bolus prior to initiation of CPB
Sponsors
Study design
Eligibility
Inclusion criteria
* will be undergoing cardiopulmonary bypass for coronary artery disease * has provided written informed consent
Exclusion criteria
* Allergy or intolerance to Heparin
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Feasibility to conduct a larger trial | pre-cardiopulmonary bypass initiation; peri-operative period (in minutes) to 24 hours post-operatively | Will the pilot show that the pilot's design is feasible with respect to timely patient enrolment, blinding of treatment allocation, study drug dosage requirements and the collection and measurement of study outcomes; ACT of \> 450 seconds after initial pre-CPB heparin bolus, dosage of additional heparin (if any) to maintain an ACT of greater than 450 seconds, differences (if any) in coagulation profiles, differences if any in chest tube drainage, differences (if any) in post-operative transfusion requiements |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| ACT after initial dose of heparin | pre-cardiopulmonary bypass initiation; peri-operatively(in seconds) | A dose of 400 units/kgm will be used |
| Total Heparin Dose used | pre-cardiopulmonary bypass initiation to termination of cardiopulmonary bypass; peri-operatively(in minutes) | The total dose of heparin needed to maintain an ACT of 480 seconds throught bypass time. |
| Coagulation | post-cardiopulmonary inition, at the 45 minute on pump time point; perioperatively to 24 hours post-operatively | aPTT, TCT, anti-Xa and anti IL IIa activity ant TAT levels after initial heparin dose and after 45 minutes on CPB. |
Countries
Canada