Study of Clinical and Laboratory Variables Associated With a Direct Oral Anticoagulant Bioassay Higher Among Those Aged Over 75 Years

Study of Clinical and Laboratory Variables Associated With a Direct Oral Anticoagulant Bioassay (Xaban) Higher Among Those Aged Over 75 Years, as AOD for Atrial Fibrillation

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT02894450

Acronym

AOD-SA

Enrollment

Registered

2016-09-09

Start date

2014-12-01

Completion date

2015-12-01

Last updated

2026-06-24

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

Conditions

Atrial Fibrillation

Keywords

Atrial fibrillation, oral anticoagulant, bioassay, elderly subject

Brief summary

The objective of this study was to investigate whether there is a link between clinical and biological variables and bioassay high xaban in elderly patients as part of an unscheduled hospitalization.

Interventions

OTHERblood test

bioassay xaban

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

75 Years to No maximum

Healthy volunteers

Inclusion criteria

* Age ≥ 75 years * Entering SAU or MPG (Nantes University Hospital) as part of an unscheduled hospitalization for acute or subacute disease (About MPG, will be included patients admitted to the department within 48 hours of calling the doctor) * In xaban to entry (dabigatran, rivaroxaban, Apixaban) for non-valvular atrial fibrillation * In whom hemostasis tests will be prescribed as part of usual care * Patient has given its verbal agreement

Exclusion criteria

Patients with the following criteria may not be included: * Patients refusing to participate in the study * Patients under guardianship * Inability to obtain the date and time of the last dose of xaban

Design outcomes

Primary

Measure	Time frame
bioassay direct oral anticoagulants	Baseline

Countries

France

Contacts

PRINCIPAL_INVESTIGATORPascal Chevalet, Dr

Nantes University Hospital

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 25, 2026