A 58-year-old man with a history of hypertension (BP 180/110 mmHg) presents to the emergency department with acute onset severe headache, neck stiffness, and vomiting. CT head (non-contrast) shows a 4 cm left basal ganglia hemorrhage with intraventricular extension and mild hydrocephalus. GCS is 13. What is the most appropriate immediate next step in management?

Explanation

## Clinical Context This patient presents with a large intracerebral hemorrhage (ICH) with intraventricular extension and hydrocephalus—a neurosurgical emergency requiring immediate intervention. ## Key Point: **Intraventricular hemorrhage with hydrocephalus is an absolute indication for emergent external ventricular drain (EVD) placement.** This relieves intracranial pressure (ICP) acutely and allows CSF drainage and ICP monitoring. ## Immediate Management Algorithm ```mermaid flowchart TD A[ICH with IVH + Hydrocephalus]:::outcome --> B{GCS ≤ 8 or signs of herniation?}:::decision B -->|Yes or IVH present| C[Mannitol/Hypertonic saline]:::action C --> D[Urgent EVD placement]:::action D --> E[ICP monitoring & CSF drainage]:::outcome B -->|No IVH, stable| F[Medical management + ICU care]:::action A --> G{Hematoma > 30 mL + lobar location?}:::decision G -->|Yes + deteriorating| H[Surgical evacuation consideration]:::action ``` ## Why This Approach? **High-Yield:** Intraventricular hemorrhage causes obstructive hydrocephalus and dramatically worsens prognosis. EVD is the first-line intervention—it is both therapeutic (reduces ICP) and diagnostic (allows ICP monitoring and CSF analysis). **Clinical Pearl:** Mannitol should be given *before* EVD placement to reduce ICP during transport and positioning. The combination of osmotic therapy + EVD is the standard of care for ICH with IVH and hydrocephalus. **Key Point:** Do NOT delay EVD for imaging (MRI, angiography, etc.). CT head is sufficient to identify hemorrhage and hydrocephalus. Neurosurgery should be notified immediately. ## Supportive Care in ICH - Blood pressure target: SBP < 140 mmHg (to minimize hematoma expansion) - Head of bed 30°, midline head position - Normothermia, normoxia, normocapnia - Seizure prophylaxis (levetiracetam preferred; phenytoin avoided due to poor outcomes) - DVT prophylaxis (sequential compression devices, not anticoagulation) [cite:Harrison 21e Ch 296]