Thromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparin
Objective The purpose of this study was to conduct pilot studies for large randomized controlled trials to compare low-molecular-weight heparin with placebo for antenatal thromboprophylaxis (trial 1), and for thromboprophylaxis after cesarean delivery (trial 2). Study design Multicenter randomized c...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2004
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| _version_ | 1797085488857743360 |
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| author | Gates, S Brocklehurst, P Ayers, S Bowler, U |
| author_facet | Gates, S Brocklehurst, P Ayers, S Bowler, U |
| author_sort | Gates, S |
| collection | OXFORD |
| description | Objective The purpose of this study was to conduct pilot studies for large randomized controlled trials to compare low-molecular-weight heparin with placebo for antenatal thromboprophylaxis (trial 1), and for thromboprophylaxis after cesarean delivery (trial 2). Study design Multicenter randomized controlled trials (trial 1, 23 units; trial 2, 8 units) were conducted. Pregnant women at increased risk for thromboembolic disease were eligible for trial 1; women who underwent cesarean delivery were eligible for trial 2. The interventions were once daily injections of low-molecular-weight heparin or placebo. Primary outcomes were as follows: trial 1, confirmed symptomatic thromboembolic events and symptomatic osteoporotic fractures; trial 2, confirmed symptomatic thromboembolic events and wound complications. Results Sixteen women were recruited for trial 1; 1 woman in the placebo group had a symptomatic thromboembolic event. One hundred forty-one women were recruited for trial 2; 1 woman in the low molecular weight heparin group had a symptomatic thromboembolic event. Conclusion Poor recruitment indicates that large-scale trials using these designs would be difficult. Collection of data on the number of women that are eligible and the reasons for nonrecruitment in future trials of these interventions would allow a better understanding of the reasons for poor recruitment. |
| first_indexed | 2024-03-07T02:09:34Z |
| format | Journal article |
| id | oxford-uuid:a0279a02-1560-404f-809b-6116ae1949fa |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:09:34Z |
| publishDate | 2004 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:a0279a02-1560-404f-809b-6116ae1949fa2022-03-27T02:03:23ZThromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparinJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a0279a02-1560-404f-809b-6116ae1949faEnglishSymplectic Elements at OxfordElsevier2004Gates, SBrocklehurst, PAyers, SBowler, UObjective The purpose of this study was to conduct pilot studies for large randomized controlled trials to compare low-molecular-weight heparin with placebo for antenatal thromboprophylaxis (trial 1), and for thromboprophylaxis after cesarean delivery (trial 2). Study design Multicenter randomized controlled trials (trial 1, 23 units; trial 2, 8 units) were conducted. Pregnant women at increased risk for thromboembolic disease were eligible for trial 1; women who underwent cesarean delivery were eligible for trial 2. The interventions were once daily injections of low-molecular-weight heparin or placebo. Primary outcomes were as follows: trial 1, confirmed symptomatic thromboembolic events and symptomatic osteoporotic fractures; trial 2, confirmed symptomatic thromboembolic events and wound complications. Results Sixteen women were recruited for trial 1; 1 woman in the placebo group had a symptomatic thromboembolic event. One hundred forty-one women were recruited for trial 2; 1 woman in the low molecular weight heparin group had a symptomatic thromboembolic event. Conclusion Poor recruitment indicates that large-scale trials using these designs would be difficult. Collection of data on the number of women that are eligible and the reasons for nonrecruitment in future trials of these interventions would allow a better understanding of the reasons for poor recruitment. |
| spellingShingle | Gates, S Brocklehurst, P Ayers, S Bowler, U Thromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparin |
| title | Thromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparin |
| title_full | Thromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparin |
| title_fullStr | Thromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparin |
| title_full_unstemmed | Thromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparin |
| title_short | Thromboprophylaxis and pregnancy: Two randomized controlled pilot trials that used low-molecular-weight heparin |
| title_sort | thromboprophylaxis and pregnancy two randomized controlled pilot trials that used low molecular weight heparin |
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