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Updated: Jun 16, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Risk of stroke after surgery in patients with and without chronic atrial fibrillation
S Kaatz1, J D Douketis, H Zhou
1Department of Medicine, Henry Ford Hospital, Detroit, MI 48202, USA. skaatz1@hfhs.org
Insights
Patients with chronic atrial fibrillation (AF) face double the risk of postoperative stroke. Further research is needed to explore anticoagulation strategies to mitigate this risk in surgical patients with AF.
Area of Science:
- Cardiology
- Neurology
- Surgical Outcomes
Background:
- The impact of chronic atrial fibrillation (AF) on postoperative stroke risk remains unclear.
- Understanding this association is crucial for patient management and risk stratification.
Purpose of the Study:
- To investigate the 30-day stroke rate in patients with and without chronic AF undergoing various surgical procedures.
- To quantify the adjusted risk of postoperative stroke associated with chronic AF.
Main Methods:
- Retrospective analysis of a population-based linked administrative database.
- Inclusion of over 2.5 million patients undergoing 10 different types of surgery between 1996 and 2005.
- Risk adjustment for key comorbidities including age, race, sex, diabetes, heart failure, hypertension, and prior stroke.
Main Results:
- Patients with chronic AF had a 1.8% 30-day stroke rate compared to 0.6% in those without AF.
- The risk-adjusted odds of postoperative stroke were 2.1 times higher for patients with chronic AF.
- The greatest increase in stroke incidence was observed following neurologic and vascular surgeries.
Conclusions:
- Chronic AF significantly elevates the risk of postoperative stroke by twofold.
- Further randomized trials are warranted to evaluate the efficacy of perioperative anticoagulation in reducing stroke incidence in AF patients.
Summary Background:
The extent to which chronic atrial fibrillation affects the risk of postoperative stroke is largely unknown.
Objectives:
We sought to determine the 30-day rate of stroke among patients with and without chronic AF who underwent 10 different types of surgery.
Patients/Methods:
The crude incidence of stroke was retrospectively determined using a population-based linked administrative database of hospitalized patients who underwent specified operations between 1 January 1996 and 30 November 2005. The risk of stroke in patients with AF was adjusted for age, race, sex, presence of diabetes, heart failure, hypertension and prior stroke.
Results:
The overall 30-day rate of stroke in 69 202 patients with chronic AF was 1.8% (95% CI, 1.7-1.9%) vs. 0.6% (CI, 0.58-0.62%) in 2 470 649 patients without AF. The risk-adjusted odds of a postoperative stroke in patients with chronic AF were 2.1 (CI, 2.0-2.3). The highest incremental difference in the crude rate of stroke was observed in patients undergoing neurologic or vascular surgery, with a difference of approximately 2%.
Conclusion:
Patients with chronic AF had twice the risk of postoperative stroke. Randomized trials are needed to determine if aggressive perioperative anticoagulation can reduce the incidence of postoperative stroke in patients with AF.
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