Intracerebral Hemorrhage
CVA · EP 04 · STROKE
Before You Listen
- Prerequisites: the Monro-Kellie doctrine and basic intracranial pressure (ICP) physiology; vascular anatomy of the lenticulostriate, thalamoperforating, and posterior cerebral artery branches; the inverted blood pressure logic from CVA-03 (permissive hypertension in ischemic stroke); the four direct oral anticoagulants (DOACs) and warfarin from CVA-03.
- Runtime: 1 hour 6 minutes.
- Topic in one line: the devastatingly disproportionate mortality of intracerebral hemorrhage (ICH) with 32 to 52% 30-day mortality (half within 48 hours), the deep-vs-lobar location-to-etiology rule (deep equals chronic hypertension via Charcot-Bouchard microaneurysm rupture; lobar in the elderly equals cerebral amyloid angiopathy [CAA]; lobar in the young equals vascular malformation), the four classic syndromes (putaminal contralateral hemiplegia, thalamic eyes-down-and-in with hydrocephalus, cerebellar 3 cm surgical emergency, pontine pinpoint reactive pupils with quadriplegia), the ICH Score with the dramatic 2-to-3 mortality cliff (26% to 72%), the ABC/2 volume calculation, the spot sign predictor of hematoma expansion, the INTERACT-2 systolic target of less than 140 paired with the ATACH-2 floor, the warfarin/dabigatran/factor-Xa reversal trio (four-factor PCC plus vitamin K, idarucizumab, andexanet alfa), the PATCH trial harm signal against platelet transfusion, and the ENRICH trial breakthrough for minimally invasive surgery.
Vignette. A 72-year-old woman with poorly controlled hypertension is brought to the emergency department after collapsing at dinner. She is now obtunded with a Glasgow Coma Scale (GCS) of 7, dense left hemiplegia, and a blood pressure of 218/118. Non-contrast head CT shows a 38 mL right putaminal hemorrhage extending into the lateral ventricle with 4 mm of midline shift. CT angiography shows a single small focus of contrast extravasation within the hematoma. She takes apixaban for atrial fibrillation. Her husband reports she has been on a stable warfarin-equivalent regimen for years and that she has never had a prior stroke.
Calculate her ICH Score and predicted 30-day mortality, name the radiographic predictor of hematoma expansion seen on her CT angiography, state the systolic blood pressure target and the trial that established it, name the specific reversal agent for her anticoagulant, and explain why platelet transfusion would be the wrong move if she were on aspirin instead.
(Answer at the end of this chapter)
Section 1: Epidemiology, the 48-Hour Cliff, and the Self-Fulfilling Prophecy
Bottom line: intracerebral hemorrhage (ICH) is 10 to 15% of all strokes but carries 32 to 52% 30-day mortality (3 to 4 times deadlier than ischemic stroke), with half of all deaths occurring in the first 48 hours; only 20% of survivors are functionally independent at 6 months; current guidelines explicitly discourage early do-not-resuscitate orders in the first 24 hours because prognostic models are unreliable that early and premature withdrawal of care is itself a mechanism of mortality.
Intracerebral hemorrhage (ICH) is bleeding directly into the brain parenchyma. It is fundamentally distinct from subarachnoid hemorrhage (SAH), which bleeds into the cerebrospinal-fluid-filled spaces around the brain. The pathophysiology, management, and prognosis diverge entirely. ICH accounts for approximately 10 to 15% of all strokes, far behind ischemic stroke in incidence. However, ICH carries a devastatingly disproportionate share of stroke mortality and is the deadliest stroke subtype by a wide margin.
The 30-day mortality for ICH ranges from 32 to 52%, compared with 10 to 15% for ischemic stroke, making ICH roughly 3 to 4 times more lethal. Even more sobering is the temporal distribution: half of all ICH deaths occur within the first 48 hours. A patient admitted tonight has roughly a one-in-two chance of dying by Thursday. This early mortality is driven by the four-mechanism cascade described by the Monro-Kellie doctrine: ongoing hematoma expansion, mass effect compressing adjacent brain, herniation through the tentorium or foramen magnum (which crushes the brainstem), and ventricular extension causing acute obstructive hydrocephalus when blood blocks cerebrospinal fluid (CSF) flow through the cerebral aqueduct.
Among survivors, functional outcomes are generally poor. Only approximately 20% of ICH patients are functionally independent at 6 months. This creates a clinical phenomenon that board examiners reference directly: the self-fulfilling prophecy of early withdrawal of care. A clinician sees a comatose patient with a catastrophic-appearing scan, assumes the situation is futile, places an early do-not-resuscitate (DNR) order, withholds aggressive blood pressure management, and the patient dies. The death certificate lists ICH as the cause, artificially reinforcing the disease’s lethality statistics. The reality is that some of those patients possessed the physiologic reserve to survive and recover meaningfully.
Current guidelines explicitly discourage early DNR orders in the first 24 hours because prognostic models are unreliable in the hyperacute window. The swelling has not peaked, the blood pressure has not stabilized, and the patient has not had a chance to declare a trajectory. The physiatrist should be a consistent voice for continued rehabilitation and recovery-oriented care even in patients with severe initial deficits, because the rehabilitation trajectory after ICH can be paradoxically more favorable than after ischemic stroke of similar initial severity. As the hematoma is reabsorbed and surrounding edema resolves over weeks, brain tissue that was displaced and rendered dysfunctional by compression (rather than destroyed by ischemia) can resume function. Patients may show delayed but ultimately more substantial recovery than initially expected.
High Yield — ICH Epidemiology
- 10 to 15% of all strokes but the deadliest subtype.
- 30-day mortality 32 to 52% (3 to 4 times ischemic stroke mortality).
- Half of all deaths in the first 48 hours.
- Only 20% functionally independent at 6 months.
- Avoid early DNR orders in the first 24 hours. Prognostic models are unreliable that early and premature withdrawal is itself a mechanism of death.
- ICH recovery can be more substantial than expected because compressed (not destroyed) tissue can recover as edema resolves.