- ICH GCP
- US-Register für klinische Studien
- Klinische 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.
Studienübersicht
Status
Bedingungen
Studientyp
Einschreibung (Voraussichtlich)
Kontakte und Standorte
Studienorte
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-
Ontario
-
Hamilton, Ontario, Kanada, L8N 4A6
- St. Joseph's Healthcare Hamilton
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Hamilton, Ontario, Kanada, L8N 3Z5
- McMaster University Medical Centre
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-
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Probenahmeverfahren
Studienpopulation
Beschreibung
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
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Kohorten und Interventionen
Gruppe / Kohorte |
|---|
|
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
|
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Prior VTE major transient risk factor
Pregnant women with a single prior VTE episode that was provoked by a major transient risk factor - Surveillance
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Symptomatic venous thromboembolism
Zeitfenster: antepartum period (expected average 7 months)
|
Symptomatic objectively confirmed recurrent VTE, including proximal DVT, non-fatal PE, and fatal PE during antepartum period
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antepartum period (expected average 7 months)
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Symptomatic recurrent venous thromboembolism
Zeitfenster: 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
Zeitfenster: 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)
Zeitfenster: antepartum period (expected average 7 months)
|
Thrombocytopenia or HIT during antepartum period
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antepartum period (expected average 7 months)
|
|
Symptomatic osteoporosis
Zeitfenster: antepartum period (expected average 7 months) and first 3 months postpartum
|
Symptomatic osteoporosis antepartum and within first 3 months postpartum
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antepartum period (expected average 7 months) and first 3 months postpartum
|
|
Other complications
Zeitfenster: antepartum (expected average 7 months) and within first 3 months postpartum
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Other complications sufficient to stop treatment (e.g., local and systemic reactions) antepartum and within first 3 months postpartum
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antepartum (expected average 7 months) and within first 3 months postpartum
|
|
Pregnancy complications and outcomes
Zeitfenster: antepartum period (expected average 7 months)
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Pregnancy complications and outcomes including fetal death, pre-eclampsia, toxemia, intrauterine growth restriction, prematurity during antepartum period
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antepartum period (expected average 7 months)
|
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Fetal anomalies
Zeitfenster: antepartum (expected average 7 months) and during first 3 months postpartum
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Fetal anomalies
|
antepartum (expected average 7 months) and during first 3 months postpartum
|
|
Major and minor bleeding
Zeitfenster: antepartum (expected average 7 months)
|
Major and minor bleeding
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antepartum (expected average 7 months)
|
Mitarbeiter und Ermittler
Mitarbeiter
Ermittler
- Hauptermittler: Shannon M Bates, MD, McMaster University Medical Centre
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Voraussichtlich)
Studienabschluss (Voraussichtlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
- Thromboembolie
- Herz-Kreislauf-Erkrankungen
- Antikoagulanzien
- venöse Thrombose
- venöse Thromboembolie
- tiefe Venenthrombose
- Lungenembolie
- Thrombose
- Enoxaparin
- Thromboseprophylaxe
- Herz-Kreislauf-Mittel
- Gefäßerkrankungen
- Tinzaparin
- Dalteparin
- Schwangerschaftskomplikationen
- Embolie und Thrombose
- hematologic agents
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- HHS130511
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