side by side comparison
Epidural vs Subdural Hematoma: Arterial vs Venous Bleed — Timing Changes Everything
A patient talks to you after head trauma, then loses consciousness 30 minutes later — that lucid interval screams epidural and demands emergency craniotomy. Confuse it with the slow venous ooze of a subdural and you miss the window to save a life.
Comparison
Side-by-side2 compared
Dimension
Epidural Hematoma
Subdural Hematoma
Pathophysiology & risk
- Middle meningeal artery — arterial bleed
- Young adults; temporal bone fracture
- Bridging veins — venous bleed
- Older adults: anticoagulants, atrophy, ETOH
Signs & symptoms
- ★Lucid interval → rapid decline (hrs)
- 'Talk and die' presentation
- Progressive headache, confusion over days
- Personality changes
Diagnostics & imaging
- ★CT: biconvex / lens-shaped
- Does NOT cross suture lines
- ★CT: crescent-shaped
- Crosses suture lines
Nursing priorities
- Anticipate rapid ↑ ICP, herniation risk
- Frequent neuro checks; prep emergent OR
- Trend slow ↑ ICP over hours–days
- Serial neuro checks; watch gradual ↓ LOC
Surgical management
- Emergent craniotomy — minutes matter
- Acute: urgent burr holes or craniotomy
- Chronic: elective burr-hole drainage
Teaching & prevention
- Seek care fast for any post-injury decline
- Fall prevention; review anticoagulant safety
- Report new confusion/headache after a fall
Red flags — herniation
- Ipsilateral fixed dilated pupil
- Contralateral hemiparesis; Cushing triad
- Gradual ↓ LOC, unilateral weakness
Prognosis & complications
- Good outcome if evacuated early
- Chronic: often good outcomes
- Acute in elderly: mortality 50–80%
Pathophysiology & risk
Epidural Hematoma
- Middle meningeal artery — arterial bleed
- Young adults; temporal bone fracture
Subdural Hematoma
- Bridging veins — venous bleed
- Older adults: anticoagulants, atrophy, ETOH
Signs & symptoms
Epidural Hematoma
- ★Lucid interval → rapid decline (hrs)
- 'Talk and die' presentation
Subdural Hematoma
- Progressive headache, confusion over days
- Personality changes
Diagnostics & imaging
Epidural Hematoma
- ★CT: biconvex / lens-shaped
- Does NOT cross suture lines
Subdural Hematoma
- ★CT: crescent-shaped
- Crosses suture lines
Nursing priorities
Epidural Hematoma
- Anticipate rapid ↑ ICP, herniation risk
- Frequent neuro checks; prep emergent OR
Subdural Hematoma
- Trend slow ↑ ICP over hours–days
- Serial neuro checks; watch gradual ↓ LOC
Surgical management
Epidural Hematoma
- Emergent craniotomy — minutes matter
Subdural Hematoma
- Acute: urgent burr holes or craniotomy
- Chronic: elective burr-hole drainage
Teaching & prevention
Epidural Hematoma
- Seek care fast for any post-injury decline
Subdural Hematoma
- Fall prevention; review anticoagulant safety
- Report new confusion/headache after a fall
Red flags — herniation
Epidural Hematoma
- Ipsilateral fixed dilated pupil
- Contralateral hemiparesis; Cushing triad
Subdural Hematoma
- Gradual ↓ LOC, unilateral weakness
Prognosis & complications
Epidural Hematoma
- Good outcome if evacuated early
Subdural Hematoma
- Chronic: often good outcomes
- Acute in elderly: mortality 50–80%
★ marks the fact that sets a column apart.
Clinical Pearl
Lucid interval then crash = epidural (artery, lens on CT); slow drift = subdural (vein, crescent on CT).
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