The edition · Neurology
After intracranial bleeding, DOACs in atrial fibrillation were linked to fewer strokes and deaths without more rebleeding
A Finnish cohort on anticoagulation after brain bleeds, real-world ARIA rates on lecanemab by APOE genotype, early rhythm control after ischaemic stroke, and reassurance on fluoroquinolones and neuropathy.
The edition in brief
A Finnish nationwide cohort of 1,502 people with atrial fibrillation and earlier intracranial bleeding found that, compared with no anticoagulation, DOAC use was associated with lower one-year risks of ischaemic stroke (0.7% vs 4.1%) and death (4.7% vs 14.7%) with no increase in intracranial bleeding; warfarin was associated with fewer strokes but more rebleeding. Over half received no anticoagulant. A meta-analysis of 37 real-world lecanemab studies found ARIA in 15% overall, 34% in APOE ε4 homozygotes and 11% in non-carriers, with symptomatic ARIA in 1.3%; without control groups, cognitive effects could not be judged. A Japanese claims cohort of 14,355 people with atrial fibrillation after ischaemic stroke found early rhythm control, used in only 1.9%, was associated with fewer recurrent strokes or emboli (HR 0.56); this is observational and needs a trial. A UK primary care study of almost four million antibiotic users found no excess peripheral neuropathy with fluoroquinolones compared with cephalosporins, while the expected tendon rupture signal appeared. The pearl covers checking vitamin B12 in new neuropathy.
Real-world ARIA on lecanemab reached 34% in APOE ε4 homozygotes against 11% in non-carriers
Genotype APOE and review baseline MRI for microbleeds before lecanemab, and use both to frame the ARIA risk discussion.
Early rhythm control after ischaemic stroke with atrial fibrillation was associated with fewer recurrent strokes
Early rhythm control after a cardioembolic stroke is worth discussing with cardiology, but it should not replace anticoagulation.
Fluoroquinolones were not associated with more peripheral neuropathy than cephalosporins
Neuropathy risk need not drive fluoroquinolone avoidance, though tendon, aortic and other warnings still apply.
Check vitamin B12 in any new peripheral neuropathy
Measure B12, glucose or HbA1c and thyroid function in every new length-dependent neuropathy.
DOACs after intracranial bleeding were associated with fewer strokes and deaths without more rebleeding
In atrial fibrillation with previous intracranial bleeding, consider a DOAC rather than withholding anticoagulation, with the decision individualised and shared with the stroke team.
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