11/02/2026
🧠 Anticoagulation in Stroke Patients with Other Comorbidities
(Quick, ward-friendly summary for clinical practice)
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1️⃣ Disabling ischaemic stroke + atrial fibrillation
Start aspirin 300 mg daily for the first 14 days
Delay anticoagulation until after this initial period
🔹 Rationale: reduce early haemorrhagic transformation risk
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2️⃣ Prosthetic heart valve + disabling cerebral infarction
Withhold anticoagulation for 1 week if haemorrhagic transformation risk is high
Substitute aspirin 300 mg daily during this period
🔹 Then reassess and restart anticoagulation when safe
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3️⃣ Ischaemic stroke + symptomatic DVT or PE
Anticoagulation is preferred over aspirin, unless contraindicated
🔹 Treat the VTE adequately—stroke alone is not a reason to avoid anticoagulation
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4️⃣ Haemorrhagic stroke + symptomatic DVT or PE
Aim to prevent further pulmonary emboli using:
Anticoagulation, or
IVC (caval) filter, if bleeding risk is prohibitive
🔹 Choice depends on bleeding risk vs thrombotic risk balance
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📝 Key Clinical Pearls
Aspirin is often a temporary bridge, not definitive therapy
VTE treatment takes priority even in stroke patients
Decisions must be individualised, especially after haemorrhagic stroke
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📚 Reference
Adapted from National Institute for Health and Care Excellence (NICE) guideline NG128 – Stroke and transient ischaemic attack in over 16s
👉 Recommendations 1.4.17–1.4.20
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This guideline covers interventions in the acute stage of a stroke or transient ischaemic attack (TIA). It offers the best clinical advice on the diagnosis and acute management of stroke and TIA in the 48 hours after onset of symptoms