Subdural haematoma Flashcards Preview

Neurology > Subdural haematoma > Flashcards

Flashcards in Subdural haematoma Deck (14):
1

In subdural haematoma which layers become separated?

The meningeal layer of the dura, and the arachnoid mater

2

Aetiology of subdural haemorrhage?

Trauma- shearing of bridging veins which travel from the cortex to the dura mater

3

History of acute SDH (2)

Trauma with head injury; altered conscious level

4

History of subacute SDH (2)

Worsening headaches 7-14 days after injury, altered mental status

5

Chronic history of SDH (5)

Headache; confusion; cognitive impairment; focal weakness; seizures

6

In whom should you have a low index of suspicion for SDH? (2)

Elderly; alcoholics

7

Why might an ipsilateral fixed dilated pupil be seen?

Large haematomas can result in a midline shift, compressing the parasympathetic fibres of the third nerve

8

Describe CT findings in SDH

Crescent or sickle-shaped mass; extensive (not limited by skull sutures)

9

Describe how the density of SDHs changes over time (3)

Acute- hyperdense
Subacute- isodense
Chronic- hypodense

10

When might MRI be used in the context of suspected SDH?

To attain higher sensitivity, particularly for isodense (subacute) or small SDHs

11

What can chronic subdural haemorrhage be confused with?

Dementia due to neurodegeneration

12

Surgical management of symptomatic SDH

Burr hole, or craniotomy + drainage

13

Potential complications of SDH (2)

Raised ICP leading to herniation
Cerebral oedema predisposing to ischaemia;

14

Post-op complications of SDH (3)

Seizures
Recurrence (up to 30%)
Brain abscess or meningitis