Managing anticoagulants for patients needing high-risk surgery

Perioperative Anticoagulant Use for Surgery Evaluation -2 (PAUSE-2) Study Patients Receiving a Direct Oral Anticoagulant (DOACs-Dabigatran, Rivaroxaban, Apixaban or Edoxaban) and Needing Elective High-Bleed-Risk Surgery or an Invasive Procedure: A Randomized Control Trial

Not applicable Interventional McMaster University · NCT06957366

This study is testing a new way to manage blood-thinning medications for patients who need high-risk surgeries to see if it keeps them safer than the current method.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment920 (estimated)
Ages18 Years and up
SexAll
SponsorMcMaster University Academic / other
Locations14 sites (Hartford, Connecticut and 13 other locations)
Trial IDNCT06957366 on ClinicalTrials.gov

What this trial studies

The PAUSE-2 study evaluates the safety of a new management approach for patients on direct oral anticoagulants (DOACs) who require elective high-bleed-risk surgeries or procedures. It compares the PAUSE management strategy against the ASRA management strategy to determine if PAUSE is as safe as ASRA, with a focus on maintaining low pre-operative DOAC levels. This prospective, open-label, blinded-endpoint non-inferiority randomized controlled trial aims to address the uncertainty surrounding perioperative management of DOACs in high-risk patients. The study is particularly relevant given the increasing use of DOACs and the aging population requiring surgical interventions.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with atrial fibrillation or venous thromboembolism requiring full-dose DOACs and scheduled for high-bleed-risk surgeries or neuraxial anesthesia.

Not a fit: Patients with unusual site thrombosis or those on low-dose DOAC regimens may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a safer management protocol for patients on DOACs undergoing high-risk surgeries, potentially reducing complications.

How similar studies have performed: Other studies have shown varying degrees of success in managing anticoagulation in surgical settings, but this specific approach is novel and addresses a significant gap in current guidelines.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults, age 18 years of age or greater, with AF/flutter (permanent, persistent or paroxysmal) or VTE (leg deep vein thrombosis or pulmonary embolism) that require a full (therapeutic)-dose DOAC regimen, appropriate for age and renal function, comprising one of (a) apixaban 2.5 mg or 5 mg bid; (b) dabigatran 110 mg or 150 mg bid; (c) edoxaban 30 mg or 60 mg daily; or (d) rivaroxaban 15 mg or 20 mg daily
* High-risk patient having an elective high-bleed-risk surgery or any elective surgery with neuraxial anesthesia (epidural, spinal, regional) or any deep nerve root block.

Exclusion Criteria:

* Indication for anticoagulation is unusual site thrombosis (e.g. splanchnic, cerebral, sinus, arm)
* Receiving a low-dose DOAC regimen used for secondary VTE prevention (e.g. rivaroxaban 10 mg daily, apixaban 2.5 mg bid) or another low-dose DOAC regimen (e.g. rivaroxaban 2.5 mg bid)
* CrCL\<25mL/min (if on apixaban, edoxaban, rivaroxaban) or \<30 mL/min (if on dabigatran)
* cognitive impairment or psychiatric illness that precludes reliable contact during follow up.
* Unable or unwilling to provide consent
* Previous participation in PAUSE 2

Where this trial is running

Hartford, Connecticut and 13 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Atrial FibrillationVTEanticoagulationatrial FibrillationSurgeryOral AnticoagulantBlood thinnerDOAC
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.