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Cerebral Venous Sinus Thrombosis — Postpartum Headache, MRI/MRV, and Anticoagulation

System: Neurology • Reviewed: Sep 1, 2025 • Step 1Step 2Step 3

Synopsis:

CVST presents with headache, focal deficits, seizures, or papilledema, often postpartum or with prothrombotic states. Diagnose with MRV/CTV and start therapeutic anticoagulation even with venous hemorrhage unless contraindicated.

Key Points

  • Confirm diagnosis early with highest-yield tests (e.g., MRV for CVST, CTA for mesenteric ischemia).
  • Dose-and-route precision for high-risk medications; monitor for adverse effects.
  • Explicit ICU criteria and consultation triggers.

Clinical Synopsis & Reasoning

CVST presents with headache, focal deficits, seizures, or papilledema, often postpartum or with prothrombotic states. Diagnose with MRV/CTV and start therapeutic anticoagulation even with venous hemorrhage unless contraindicated.


Treatment Strategy & Disposition

Stabilize airway/breathing/circulation; initiate guideline-concordant first-line therapy; tailor escalation or de-escalation to clinical response and objective metrics; define clear disposition criteria (e.g., ICU triggers, ward acceptability, outpatient safety).


Epidemiology / Risk Factors

  • Risk varies by comorbidity and precipitating factors

Investigations

TestRole / RationaleTypical FindingsNotes
CBCAnemia/leukocytosisContext-specificTrend with therapy
BMPElectrolytes/renalDerangements commonRenal dosing
Condition-specific imagingSee topicDiagnostic hallmarkDo not delay when red flags present

Pharmacology

MedicationMechanismOnsetRole in TherapyLimitations
Heparin (IV) or LMWHAnticoagulantImmediateInitial therapy despite venous hemorrhageMonitor aPTT/anti-Xa
Levetiracetam (if seizures)AntiseizureHoursSeizure control/prophylaxis in select casesSomnolence

Prognosis / Complications

  • Outcome depends on timeliness of diagnosis and definitive therapy

Patient Education / Counseling

  • Explain red flags, adherence, and follow-up plan

References

  1. Authoritative guideline/review; see internal bibliography — Link

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