Related Experiment Video
Updated: May 9, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Cardiovascular implantable electronic device implantation with uninterrupted dabigatran: comparison to uninterrupted
John M Jennings1, Robert Robichaux, H Thomas McElderry
1University of Alabama at Birmingham, Birmingham, Alabama, USA.
Insights
Continuing oral anticoagulation (OAC) with dabigatran during cardiovascular implantable electronic device (CIED) procedures is as safe as using warfarin, with similar bleeding risks. Combining OAC with antiplatelet drugs increases complication risks.
Area of Science:
- Cardiology
- Pharmacology
- Medical Devices
Background:
- Oral anticoagulation (OAC) management during cardiovascular implantable electronic device (CIED) procedures is critical.
- Warfarin continuation is often preferred over heparin bridging, but dabigatran's safety in this context is less clear.
Purpose of the Study:
- To compare bleeding and thromboembolic risks of uninterrupted dabigatran versus warfarin during CIED implantation, replacement, or revision.
- To assess the safety of continuing dabigatran without interruption for CIED procedures.
Main Methods:
- Retrospective comparison of patients undergoing CIED procedures.
- Patients received either uninterrupted dabigatran (D), interrupted dabigatran, or uninterrupted warfarin (W).
- Outcomes included bleeding complications (e.g., pericardial effusion, pocket hematomas) and thromboembolic events.
Main Results:
- Bleeding complication rates were similar: 2.1% for uninterrupted dabigatran (1/48), 0% for interrupted dabigatran (0/14), and 4.6% for warfarin (9/195).
- No significant difference in bleeding complications between uninterrupted dabigatran and warfarin (P = 0.69).
- Fifty percent of bleeding events occurred when OAC was combined with antiplatelet medications.
Conclusions:
- Uninterrupted dabigatran is a safe strategy for CIED procedures, comparable to warfarin in terms of bleeding risk.
- Concomitant use of antiplatelet agents with OAC increases the risk of bleeding complications during CIED procedures.
Background:
While continuation of oral anticoagulation (OAC) with warfarin may be preferable to interruption and bridging with heparin for patients undergoing cardiovascular implantable electronic device (CIED) implantation, it is uncertain whether the same strategy can be safely used with dabigatran.
Objective And Methods:
To determine the risk of bleeding and thromboembolic complications associated with uninterrupted OAC during CIED implantation, replacement, or revision, the outcomes of patients receiving uninterrupted dabigatran (D) were compared to those receiving warfarin (W).
Results:
D was administered the day of CIED implant in 48 patients (age 66 ± 12.4 years, 13 F and 35 M, 21 ICDs and 27 PMs), including new implant in 25 patients, replacement in 14 patients, and replacement plus lead revision in 9 patients. D was held the morning of the procedure in 14 patients (age 70 ± 11 years, 4 F and 10 M, 5 ICDs and 9 PMs). W was continued in 195 patients (age 60 ± 14.4 years, 54 F, and 141 M), including new implant in 122 patients, replacement in 33 patients, and replacement plus lead revision or upgrade in 40 patients. Bleeding complications occurred in 1 of 48 patients (2.1%) with uninterrupted dabigatran (a late pericardial effusion), 0 of 14 with interrupted D, and 9 of 195 patients (4.6%) on W (9 pocket hematomas), P = 0.69. Fifty percent of bleeding complications were associated with concomitant antiplatelet medications.
Conclusions:
The incidence of bleeding complications is similar during CIED implantation with uninterrupted D or W. The risks are higher when OAC is combined with antiplatelet drugs.
Related Concept Videos
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Venous Thrombosis III: Interprofessional Care
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Drug Accumulation During Multiple Dosing: Intermittent IV Infusions
