Pregnancy Related Clinical Trial
Official title:
Randomized Control Trial of Unfractionated Heparin Thromboprophylaxis Dosing for Antepartum Hospitalizations
Verified date | April 2023 |
Source | University of California, Los Angeles |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
This study is a randomized control trial to compare gestational age-based dosing with standard dosing of unfractionated heparin for thromboprophylaxis of hospitalized antepartum patients. The investigators aim to determine the effect of dosing on receipt of neuraxial anesthesia and pregnancy outcomes and evaluate the pharmacokinetics and pharmacodynamics of unfractionated heparin in pregnancy.
Status | Completed |
Enrollment | 46 |
Est. completion date | May 1, 2022 |
Est. primary completion date | March 31, 2022 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Female |
Age group | 18 Years to 50 Years |
Eligibility | Inclusion Criteria: - At least 18 years of age - Speak English or Spanish - Antepartum admission for at least 72 hours at Ronald Reagan UCLA Medical Center - Provides informed consent for study participation Exclusion Criteria: - Active or threatened antenatal bleeding - Disseminated intravascular coagulation - Risk of imminent delivery (delivery within 12 hours) - Thrombocytopenia (platelet count < 100 x 109) - Elevated baseline aPTT (> 36.2 seconds) - Concern for hemolysis, elevated liver enzymes, low platelet count (HELLP) syndrome - Congenital bleeding disorders (hemophilias) - Receiving therapeutic or prophylactic anticoagulation (unfractionated heparin, low molecular weight heparin, oral anticoagulants) for alternative indication (e.g., acquired or inherited thrombophilia, history of VTE) - History of heparin-induced thrombocytopenia (HIT) - SARS-CoV-2 positive - Cognitive impairment, psychiatric instability, or language barriers that limit their ability to provide informed consent - Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the patient or the quality of the data. |
Country | Name | City | State |
---|---|---|---|
United States | UCLA Medical Center | Los Angeles | California |
Lead Sponsor | Collaborator |
---|---|
University of California, Los Angeles |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Number of Participants With Elevated Serum Activated Partial Thromboplastin Time Above the Normal Range (> 36.2 Seconds). | Surrogate marker for whether or not the patient would be eligible for neuraxial anesthesia based on guidelines for neuraxial anesthesia in pregnant women receiving VTE prophylaxis | Collected 6 hours after unfractionated heparin dose until patient was taken of unfractionated heparin, an average of 1 week | |
Secondary | Number of Participants Diagnosed With Venous Thromboembolism (Pulmonary Embolism and/or Deep Venous Thromboembolism) | Assessed throughout hospitalization, an average length of 8 days, until 6 weeks after delivery | ||
Secondary | Number of Participants Who Did Not Receive or Had a Delay of Neuraxial Anesthesia Due to Unfractionated Heparin | Assessed at time of delivery | ||
Secondary | Number of Participants That Received General Anesthesia | Assessed at time of delivery | ||
Secondary | Number of Participants That Had a Delay in Timing of Delivery Due to Unfractionated Heparin | Assessed at time of delivery | ||
Secondary | Maximum Anti-Factor Xa Level Measured | Collected 6 hours after unfractionated heparin dose until patient was taken of unfractionated heparin, an average of 1 week | ||
Secondary | Mode of Delivery | Assessed at time of delivery | ||
Secondary | Estimated Blood Loss From Delivery | Assessed at time of delivery | ||
Secondary | Number of Participants That Received a Blood Transfusion | From time of delivery until 6 weeks after delivery | ||
Secondary | Maximum Activated Partial Thromboplastin Clotting Time Levels Measured | Collected 6 hours after unfractionated heparin dose until patient was taken of unfractionated heparin, an average of 1 week |
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