AVM

Question 1

Prevalence of brain arteriovenous malformations (AVMs)

Answer 1

0.5-0.8%

1 per 100,000 or a yearly risk of 2% of rupture

Question 2

What age group typically presents with brain AVMs?

Answer 2

20s to 40s

The age of presentation is important for understanding the demographic most affected by AVMs.

Question 3

What is the estimated incidence of hemorrhage from AVMs?

Answer 3

1 per 100,000 or a yearly risk of 2%

This statistic highlights the potential risk associated with untreated AVMs.

Question 4

What is the most common presentation of brain AVMs?

Answer 4

Hemorrhage
Seizure
Headache- dilation of meningeal feeding arteries

Question 5

Where are AVMs most commonly located in the brain?

Answer 5

Cerebellar, brainstem, deep nuclear

These locations are critical for understanding the potential impact on neurological function.

Question 6

Predictors of hemorrhage in untreated AVMs?

Answer 6

Previous hemorrhage and increasing age

Question 7

AVM in children

Answer 7

Most common cause of IVH 50%
Can cause High output cardiac failure if vein if taken involved

Question 8

Diagnose AVMs?

Answer 8

Dynamic imaging - has distinct arterial, capillary and venous phases. A shunting lesion is present of arterial and venous phases are seen in same image