USMLE Forum Archives - USMLE Step 2 CK - NEURO
NEURO
bingousmle - 07-31-10 10:36
Lumbar puncture should be preceded by CT or MRI in all of the following subsets of patients suspected of having meningitis except those with:
A. depressed consciousness
B. focal neurologic abnormality
C. known central nervous system (CNS) mass lesion
D. positive Kernig’s sign
E. recent head trauma
bingousmle - 07-31-10 10:36
Lumbar puncture should be preceded by CT or MRI in all of the following subsets of patients suspected of having meningitis except those with:
A. depressed consciousness
B. focal neurologic abnormality
C. known central nervous system (CNS) mass lesion
D. positive Kernig’s sign
E. recent head trauma
The correct answer and explanation will be available after you answer.
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#1
Re: NEURO babbu5508 - 07-31-10 12:46 My answer is: e.
raised intracranial pressure is an absolute contraindication for lumbar puncture due to risk of herniation......
#2
Re: NEURO
bingousmle - 07-31-10 13:32 My answer is: d.
all other lesions may be seen in cases other than meningitis but a positive kernigs is specific for meningitis or meningeal irritation
#3
Re: NEURO ammulufy - 08-01-10 21:43 My answer is: b.
Well LP is c.i in d probable ptnts of meningitis only when der is any impending herniation in v/o raised ict.....out of all d options only A n B can cause severly raised ict out of wch "B" is better an indicator of severity of raised ict dan "A"
#4
Re: NEURO ammulufy - 08-01-10 21:46 Well jst been a bit hasty....I thought it is a positive c/o meningitis n not d suspected one n thought d neurological deficit to be d complication of meningitis....yes option d is rght for aiding in diagnosing meningitis....but only after positively ruling out other dds of meningitis.
#17
Re: NEURO sudha2015 - 03-31-11 00:37 Lumbar puncture should be preceded by CT or MRI in all of the following subsets of patients suspected of having meningitis except those with
d
#18
Re: NEURO babbu5508 - 03-31-11 18:43 Lumbar puncture should not be performed in the following situations
Idiopathic (unidentified cause) increased intracranial pressure (ICP)
Rationale: lumbar puncture in the presence of increased ICP may cause uncal herniation
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