Arrhythmias & electrophysiology

Severity of Ischemic Stroke After Left Atrial Appendage Closure vs Nonwarfarin Oral Anticoagulants

JACC Clin ElectrophysiolPublished Retrospective cohort study

Authors' conclusion

Ischemic strokes in patients with atrial fibrillation are less often disabling or fatal with LAAC than DOAC prophylaxis.

Study context

Population
AF patients with ischemic stroke (IS) during left atrial appendage closure (LAAC) or direct oral anticoagulant (DOAC) prophylaxis
Participants
125 vs 322
Exposure
LAAC vs DOAC prophylaxis
  • ISLAACn = 125
  • ISDOACn = 322reference
Outcome
Disabling/fatal stroke (modified Rankin Scale 3-5)
Follow-up
Discharge and 3 months later
Methodological detailsmulticentre (8 centres), consecutive patients, propensity score matching, multivariate regression
  • Multicentre (8 centres)
  • Consecutive patients
  • Propensity score matching
  • Multivariate regression

Main finding

As reported in the abstract

Disabling/fatal stroke (mRS 3-5) · discharge and 3 months

ISLAAC

Discharge
38.3%
3 months
33.3%

ISDOAC

Discharge
70.3%
3 months
56.2%

Discharge

ISLAAC38.3%
ISDOAC70.3%

3 months

ISLAAC33.3%
ISDOAC56.2%
ISLAAC vs ISDOACOdds ratio (95% CI)P value
Discharge; multivariate regression
0.22(0.13–0.39)
P < 0.001
3 months; multivariate regression
0.25(0.12–0.50)
P < 0.001

Observational data: associations, not effects.

Further findings

OutcomeOR (95% CI)P value
Death · 3 monthsMultivariate regression0.28 (0.12–0.64)P < 0.001

Original publication

Severity of Ischemic Stroke After Left Atrial Appendage Closure vs Nonwarfarin Oral Anticoagulants. JACC Clin Electrophysiol. Published 22 November 2023. doi:10.1016/j.jacep.2023.10.012

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