A 72-year-old woman on warfarin for atrial fibrillation (INR 8.2 at admission) presents with a 6-hour history of acute left-sided weakness and expressive aphasia. Her daughter noticed she had been increasingly forgetful over the past 2 weeks. CT head shows a hyperdense lesion in the right frontal lobe with surrounding edema and mass effect. What is the most appropriate immediate intervention after airway and hemodynamic stabilization?

Explanation

## Clinical Context: Anticoagulation-Associated Intracerebral Hemorrhage **Key Point:** Warfarin-associated ICH (INR 8.2) requires urgent reversal of anticoagulation with fresh frozen plasma (FFP) and vitamin K to halt ongoing bleeding and prevent hematoma expansion. Surgical evacuation is reserved for deterioration or mass effect. **High-Yield:** Anticoagulation-associated ICH has worse outcomes than spontaneous ICH due to continued bleeding risk. Rapid INR correction (target <1.5) within the first 24 hours improves outcomes [cite:Harrison 21e Ch 296]. ## Pathophysiology of Warfarin-Associated ICH 1. Warfarin inhibits vitamin K–dependent factors (II, VII, IX, X) → prolonged INR 2. INR 8.2 (severely elevated) → loss of hemostatic control 3. Spontaneous ICH in brain parenchyma (right frontal lobe here) 4. Ongoing microvascular bleeding → hematoma expansion (highest risk in first 24 hours) ## Anticoagulation Reversal Strategy | Agent | Mechanism | Onset | Duration | Notes | |-------|-----------|-------|----------|-------| | **FFP** | Replaces vitamin K–dependent factors | 15–30 min | 4–6 hrs | Requires large volume; monitor for fluid overload | | **Vitamin K (phytonadione)** | Restores hepatic synthesis of factors II, VII, IX, X | 12–24 hrs | Permanent | Must be given IV (not IM) in acute setting | | **Prothrombin Complex Concentrate (PCC)** | Concentrated vitamin K–dependent factors | 15 min | 12–24 hrs | Preferred over FFP if available; smaller volume | **Clinical Pearl:** In India, FFP is more readily available than PCC in most centers. The combination of FFP + vitamin K is standard. PCC (if available) is superior due to lower volume and faster correction. ## Management Algorithm ```mermaid flowchart TD A[Warfarin-associated ICH, INR 8.2]:::outcome --> B[Stabilize airway, BP, glucose]:::action B --> C[Reverse anticoagulation immediately]:::urgent C --> D[FFP 10–15 mL/kg + Vitamin K 10 mg IV]:::action D --> E[Repeat INR at 2–4 hours]:::action E --> F{INR <1.5 AND GCS stable?}:::decision F -->|Yes| G[Continue ICU monitoring, repeat CT at 24 hrs]:::action F -->|No| H{GCS declining OR midline shift >5 mm?}:::decision H -->|Yes| I[Neurosurgery consult for hematoma evacuation]:::urgent H -->|No| J[Repeat FFP/PCC dose, recheck INR]:::action ``` **High-Yield:** Do NOT delay anticoagulation reversal while waiting for repeat imaging or neurosurgery consultation. Hematoma expansion occurs within the first 24 hours and is the primary driver of poor outcomes in anticoagulation-associated ICH. ## Why Surgery Is Not Immediate - Decompressive craniectomy is indicated for **mass effect with herniation** or **GCS ≤8 with midline shift**, not as first-line therapy - Hematoma evacuation may be considered if the patient deteriorates despite medical management - Current guidelines favor medical management first, with surgery reserved for clinical deterioration [cite:Neurocritical Care Society Guidelines 2015]