Subarachnoid Flashcards

0
Q

Risk factors for SAH

A

Htn dia 105, smoking, fungal, oct, liver, trauma, arm, cocaine, amph

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1
Q

Percent of stroke that are SAH

A

10

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2
Q

Biggest risk factor for SAH

A

Fibro muscular dysplasia 25% of aneurysm

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3
Q

Most common place for Subarachnoid aneurysm

A

1/3rd are in anterior
Internal carotid bifurcation with post
Ic with mca

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4
Q

How many with aneurysm have more than 1

A

25 percent

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5
Q

Percent of SAH assoc with poly coatis kidney disease

A

3% overrated

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6
Q

Mean age of SAH

A

50

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7
Q

Context of SAH

A

60 % During activity.

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8
Q

Don’t forget about asking about what w SAH in history

A

Prior episodes

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9
Q

Types of activity associated with SAH

A

Colitis dedication emotional strain I

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10
Q

What does mydriasis mean

A

Cranial nerve 3 deficit, uncal hernia midbrain problem

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11
Q

Cn 3 plus Hemiparesis wo gate abnormality

A

Weber syndrome

Posterior communicating

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12
Q

Lab findings with SAH

A

Hyponatriemia

Qt

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13
Q

Cz of SAH Na deficit

A

Salt wasting, cerebral wasting, siadh

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14
Q

Cz of nuchal rigidity patho

A

Blood degradation products irritate the pia arachnoid which cause stiffness

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15
Q

Peak of vasospasm in days

A

4 to 14 days

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16
Q

How do you detect vasospasm

A

Trancranial Doppler can be used to detect a change in flow velocity

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17
Q

How is a acute communicating hydrocephalus caused from patho

A

Subarachnoid granulation in the venous sinuses obstruct

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18
Q

Percent of nontraumatic aneurysm that are caused by berry

A

80%

Most are associated w trauma

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19
Q

SAH associated with what vital.

A

Diastolic 110

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20
Q

Head ct sensitivity of SAH

A

85 to 90, miss 10 to 15

21
Q

When is ct most sensitive for dr erecting SAH

22
Q

When is lp most sensiive for SAH

23
Q

What percent of lp miss SAH

24
How do you scene for aneurysm of SAH
Ct MRI angio
25
Percent of SAH that die in the first 30 days
60 percent
26
Hess and hunt category
1. Nuchal and mild ha 2. Nuchal and sever ha 3. Nuchal and confusion 4. Nuchal and Hemiparesis 5. Nuchal and comatosed
27
What does miningius mean
Inflammation without infection
28
What is the miningismus triad
Headache Neck Photophobia
29
Drug if choose to prevent vasospasm
Nimotop
30
Sensitivity and specificity of kernig and brudinski ski
5% sens but 95%
31
What is the sensitivity of nuchal rigidity
30 sens 80 sens
32
If you see a SAH rupture and are thinking neurosurgey
Conventional angiography
33
What consult will you place for an SAH
Coiling specialist. Neurointerventionalist
34
Grade and surgery for SAH
Low grade is coil | High grade clip
35
When do you clip an aneurysm
Before two days or after 2 weeks
36
Complication of SAH
Siadh | Hydrocephalus
37
Mainstay med management of SAH
``` Triple H therapy Htn Hyper volume Hemodilution Nimodipine ```
38
How do you evaluate hyper acute Hemiparesis
Diffuse weight MRI
39
SAH w 3 rd cranial nerve problem suggests which artery
Posterior communicating
40
SAH e cn 6 suggest what type of artery
Posterior fossa or increase pressure.
41
What do you call a bleed from am unruptures aneurysm
Sentinel bleed
42
What percent of stroke is SAH
5%
43
What present of primary stroke is anueysm
80 an
44
What percentage of aneurysm re bleeding? | Mortality if untreated ?
50% | 50% mortality of untreated
45
Where are all aneurysms located? | If not there, what?
Circle of Willis My Cotic Avm induced aneurysm
46
Work up for SAH
Ct to locate bleed, mra | Catheter angio
47
Most common places for aneurysm
Communicators (ant and pos) 35%
48
What imaging is good for encephalopathy
MRI dt white matter changes
49
HSV perfer what area of the brain
Insular and temporal lobe