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Prospective Comparison of Incidence of Heavy Menstrual Bleeding in Women Treated With Direct Oral Anticoagulants

Prospective, Observational, Non-interventional Open-label Multicenter Registry Regarding the Incidence of Heavy Menstrual Bleeding in Women of Reproductive Age Treated With Direct Oral Anticoagulants Because of Venous Thromboembolism

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04477837
Enrollment
84
Registered
2020-07-20
Start date
2020-10-15
Completion date
2024-06-15
Last updated
2024-08-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Heavy Menstrual Bleeding

Brief summary

Prospective comparison of the incidence of heavy menstrual bleeding (HMB) in women of reproductive age treated with direct oral anticoagulants (DOACs)

Detailed description

Patients will be treated as standard of care, no randomization schedule, no blinded investigational product (IP). The decision which DOAC will be given is made before the subject will enter the trial. The DOAC has to be taken at least for seven days. The registry is non-interventional (NIS) with routine blood draw at baseline and at month 4 after inclusion. The prospective follow up will be up to four months. Three consecutive menstrual bleeding cycles will be documented by the participating patients at home. One baseline data reporting and one follow up reporting after four months are planned in the participating coagulation centers. The primary aim is the comparison of the frequency of heavy menstrual bleeding in female patients of reproductive age anticoagulated with DOACs using a modified pictorial blood loss assessment chart. Secondary aims are the prevalence of von Willebrand disease in young anticoagulated female patients and correlation of HMB with age, International Society of Thrombosis and Hemostasis bleeding assessment tool at inclusion, Blood group, anatomical reasons i.e. underlying uterine pathologies, i. e. presence of uterine fibroids, endometrial polyps and/or adenomyosis, occurrence of iron deficiency, hemoglobin level and intermittent use of non-steroidal anti-inflammatory drug (NSAID).

Interventions

frequency of heavy menstrual bleeding

frequency of heavy menstrual bleeding

frequency of heavy menstrual bleeding

DRUGDabigatran 150 Mg Oral Capsule

frequency of heavy menstrual bleeding

Sponsors

Cardioangiologisches Centrum Bethanien
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 50 Years
Healthy volunteers
No

Inclusion criteria

* Women with venous thromboembolism * Age: 18 - 50 years * Regular menstrual bleeding * Treatment with DOACs for at least 7 days before inclusion * Full therapeutic anticoagulation with rivaroxaban 1 x 20 mg, apixaban 2 x 5 mg, edoxaban 60mg once daily or dabigatran 2 x 150mg for at least the next four months * Written informed consent

Exclusion criteria

* Hysterectomy or ovariectomy * Known heavy menstrual bleeding * Hormonal contraceptives * Hormone replacement therapy * Use of hormone releasing intrauterine System (IUS) * Contraindications to treatment with DOACs * Treatment with rivaroxaban 15 mg twice daily (first three weeks after diagnosis of venous thrombosis) or apixaban 10 mg twice daily (first week after diagnosis of venous thrombosis) * Treatment with rivaroxaban (10 mg or 15 mg once daily) or apixaban (2,5 mg twice daily) in reduced therapeutic dosages * Participation in any other trial

Design outcomes

Primary

MeasureTime frameDescription
Primary observation point (for all patients)baseline and monthly up to month 4Frequency of heavy menstrual bleeding in anticoagulated female patients of reproductive Age using a modified Pictorial blood loss assessment Chart (PBAC)-Score (Higham, Br J Obstet Gynaecol 1990; 97: 734-9)

Secondary

MeasureTime frameDescription
Secondary observation points (for all patients)up to 16 weeksCorrelation of heavy menstrual bleeding with von Willebrand's disease; Age; ISTH-BAT-Score at inclusion; blood Group; anatomical reasons i.e. underlying uterine pathologies, i.e. presence of uterine fibroids, endometrial polyps and/or adenomyosis; iron deficiency; hemoglobin level; intermittent use of NSAR

Countries

Germany

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026