- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT01357941
Need for Antepartum Thromboprophylaxis in Pregnant Women With One Prior Episode of Venous Thromboembolism (VTE) (ROCITP2)
Prospective Study Assessing the Need for Antepartum Thromboprophylaxis in Pregnant Women With One Prior Episode of Venous Thromboembolism
Pregnant women with a prior history of venous thromboembolism (VTE) are at increased risk of recurrent VTE. Current guidelines assessing the role of prophylaxis in pregnant women with prior VTE are based primarily on expert opinion and the optimal clinical management strategy remains unclear.
This multicentre, prospective cohort study aims to test the following hypotheses:
- Antepartum prophylaxis with fixed-dose low molecular-weight heparin (LMWH) is safe, convenient and associated with an acceptably low risk of recurrent VTE in women with a single prior episode of VTE that was either unprovoked or associated with a minor transient risk factor. (Moderate risk cohort)
- Withholding antepartum prophylaxis is safe (recurrence risk <1%) in pregnant women with a single prior episode of VTE provoked by a major transient risk factor. (Low risk cohort)
All study patients will receive 6 weeks of postpartum prophylaxis.
Přehled studie
Postavení
Typ studie
Zápis (Očekávaný)
Kontakty a umístění
Studijní místa
-
-
Ontario
-
Hamilton, Ontario, Kanada, L8N 4A6
- St. Joseph's Healthcare Hamilton
-
Hamilton, Ontario, Kanada, L8N 3Z5
- McMaster University Medical Centre
-
-
Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Metoda odběru vzorků
Studijní populace
Popis
Inclusion Criteria:
- Confirmed pregnancy (positive serum or urine)
- At least 18 years of age
- History of one prior episode of VTE consisting of DVT (diagnosed by compression ultrasonography [CUS] or venography) and/or PE (diagnosed by ventilation-perfusion [V/Q] lung scintigraphy, computed tomographic pulmonary angiography [CTPA], or traditional pulmonary angiography)
Exclusion Criteria:
- Ongoing need for therapeutic anticoagulation for prevention or treatment of cardioembolic stroke
- Known high-risk thrombophilia (specifically antithrombin deficiency, protein S deficiency, protein C deficiency, homozygosity for the factor V Leiden or prothrombin G20210A mutations, antiphospholipid antibody or compound abnormalities)
- VTE within 3 months of the current pregnancy
- Clinical risk factor for initial episode of VTE, if present, not resolved (excluding pregnancy)
- Known contraindication to anticoagulation (including active, uncontrolled bleeding or major bleed within the previous 4 weeks)
- For patients with prior unprovoked VTE, contraindication to LMWH (including allergy, HIT, impaired renal function, osteoporosis)
- Geographic or social factors precluding follow-up
- Inability or unwillingness to provide informed consent
Studijní plán
Jak je studie koncipována?
Detaily designu
Kohorty a intervence
Skupina / kohorta |
|---|
|
Prior VTE minor transient risk factor
Pregnant women with a single prior VTE episode that was either unprovoked or associated with a minor transient risk factor - Prophylaxis with fixed-dose LMWH
|
|
Prior VTE major transient risk factor
Pregnant women with a single prior VTE episode that was provoked by a major transient risk factor - Surveillance
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Symptomatic venous thromboembolism
Časové okno: antepartum period (expected average 7 months)
|
Symptomatic objectively confirmed recurrent VTE, including proximal DVT, non-fatal PE, and fatal PE during antepartum period
|
antepartum period (expected average 7 months)
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Symptomatic recurrent venous thromboembolism
Časové okno: antepartum period (expected average 7 months) and first 3 months postpartum
|
Symptomatic recurrent VTE antepartum and within first 3 months postpartum
|
antepartum period (expected average 7 months) and first 3 months postpartum
|
|
Symptomatic recurrent pulmonary embolism
Časové okno: antepartum period (expected average 7 months) and first 3 months postpartum
|
Symptomatic objectively confirmed recurrent PE antepartum and within first 3 months postpartum
|
antepartum period (expected average 7 months) and first 3 months postpartum
|
|
Thrombocytopenia or heparin-induced thrombocytopenia (HIT)
Časové okno: antepartum period (expected average 7 months)
|
Thrombocytopenia or HIT during antepartum period
|
antepartum period (expected average 7 months)
|
|
Symptomatic osteoporosis
Časové okno: antepartum period (expected average 7 months) and first 3 months postpartum
|
Symptomatic osteoporosis antepartum and within first 3 months postpartum
|
antepartum period (expected average 7 months) and first 3 months postpartum
|
|
Other complications
Časové okno: antepartum (expected average 7 months) and within first 3 months postpartum
|
Other complications sufficient to stop treatment (e.g., local and systemic reactions) antepartum and within first 3 months postpartum
|
antepartum (expected average 7 months) and within first 3 months postpartum
|
|
Pregnancy complications and outcomes
Časové okno: antepartum period (expected average 7 months)
|
Pregnancy complications and outcomes including fetal death, pre-eclampsia, toxemia, intrauterine growth restriction, prematurity during antepartum period
|
antepartum period (expected average 7 months)
|
|
Fetal anomalies
Časové okno: antepartum (expected average 7 months) and during first 3 months postpartum
|
Fetal anomalies
|
antepartum (expected average 7 months) and during first 3 months postpartum
|
|
Major and minor bleeding
Časové okno: antepartum (expected average 7 months)
|
Major and minor bleeding
|
antepartum (expected average 7 months)
|
Spolupracovníci a vyšetřovatelé
Spolupracovníci
Vyšetřovatelé
- Vrchní vyšetřovatel: Shannon M Bates, MD, McMaster University Medical Centre
Publikace a užitečné odkazy
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia
Primární dokončení (Očekávaný)
Dokončení studie (Očekávaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Odhad)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Odhad)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
Další identifikační čísla studie
- HHS130511
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