bloedingen thromboembolism
Conditions
Interventions
None listed
Sponsors
Philips Research
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: Chronic, more than 3 months VKA use Acenocoumarol use An invasive procedure is planned (scopy or small intervention) The patient is bridged with heparin
Exclusion criteria
Exclusion criteria: Renal failure (MDRD clearance
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Primary: The perioperative measurement of various plasma proteins as well as the SNPs VKORC1 and CYP2C9 combined with the values of aPTT / INR and anti-FXa allows us to test the validity of our model for use in clinical practice. We want to have both the aPTT / anti-FXa and the INRs, measured once daily, from 3 days before surgery to 5 days after surgery. If aPTT / anti-FXa and INR of the patient are within the therapeutic framework during the study period, there is a good balance between bleeding risk and risk of thrombosis. We have the following reference values for the morning before the surgery: INR | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary: The data obtained from the patients can be used for further quantitative improvement of the model. The 30 days perioperative monitoring of the participants gives us an idea of the expected rate of bleeding and thromboembolic events during the bridging period in the MUMC + and will help us to determine the sample size of a possible future study. | — |
Countries
Netherlands
Outcome results
None listed