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Flashcards in Lumbar puncture Deck (10)
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1
Q

Why do you perform LP in GBS?

A

Albuminocytologic dissociation—an increase in protein with normal white blood cell count—is noted in nine out of 10 patients within one week of symptom onset. An increased lymphocyte count would be inconsistent with GBS and may suggest sarcoidosis, Lyme disease neuropathy, or recent HIV infection

2
Q

What are the indications for performing LP?

A

Diagnostic/investigative: MS, SAH, meningitis, GBS
Therapy

3
Q

Name two indications in which LP can be therapeutic

A

normal pressure hydrocephalus
idiopathic intracranial hypertension (IIH)

4
Q

What are the features of normal pressure hydrocephalus

A

parkinsonian gait
dementia
urinary incontinence

5
Q

wet, wacky, wobbly, describes which condition

A

normal pressure hydrocephalus= reversible cause of dementia

6
Q

Two risk factors for idiopathic intracranial HTN?

A

female, obese

7
Q

What is the management of IIH?

A

lose weight, acetazolamide (carbonic anyhdrase inhibitor)

8
Q

When must patient be lying down to perform LP?

A

if you need to measure opening pressure!! E.g. to assess for IIH. If they are sitting then gravity interferes with pressure

9
Q

What are two common complications of LP?

A

headache and infection/bleeding

10
Q

What are two rarer complications of LP?

A

chronic back pain and nerve damage