CCRN BARRON'S PRACTICE EXAM 2025
CORRECT ANSWERS
VERY BAD results in poor cerebral perfusion CPP= MAP-ICP - correct
answer>>high ICP with hypotension...
1. Elevated systolic BP
2. Bradycardia
3. Irregular respirations - correct answer>>Cushing's triad consists of:
A waves are "awful" - correct answer>>"A" Waves of ICP monitoring
B waves are bad - correct answer>>"B" waves of ICP monitoring
C waves are common - correct answer>>C waves of ICP monitoring
A waves and high ICP - correct answer>>cerebral vasospasm results in ___
waves and ____ ICP
No! hypotonic, increased cell swelling - correct answer>>should you give
0.45 NS to a patient with high ICP?
No! hypotonic, increased cell swelling - correct answer>>should you give
D5W to a patient with high ICP?
,No. Hyperventilation causes alkalosis, which increases vasoconstriction
which does lower ICP, but decreases cerebral blood flow - correct
answer>>Should hyperventilation be used to decrease ICP?
-Bleeding between the dura mater and the skull
Patient will decompensate faster RAPID symptoms can
cause UNCAL HERNIATION --->death S+S:
headache
confusion vomiting
ipsilateral pupil dilation usually before decreased LOC
contralateral hemiparesis/plegia - correct answer>>epidural hematomas
basilar fx
Check fluid coming out of nose for glucose, if positive, it is CSF
Could also put on gauze to check for clot surrounded by yellow halo---> Halo
sign
NO blowing nose!
Battles sign/raccoon eyes/otorrhea - correct answer>>your patient with a
skull fracture (you're not sure where) has lost cranial nerve I, sense of smell
and has a runny nose. What do you suspect?
cerebral hypermetabolism (after 30 mins) - correct answer>>in status
epilecticus, what is death due to?
bacterial meningitis - correct answer>>Low glucose in CSF
viral meningitis (60% is normal glucose) - correct answer>>normal glucose in
CSF
, 8-12 mins - correct answer>>after how long would you reconnect vent and
do an ABG for apnea test?
8-10 mins with pco2 >60 or >20 from baseline - correct answer>>positive
apnea test for brain death
Tensilon test:
Myasthenic--> improved symptoms
Cholinergic---> increased weakness and SLUDGE - correct
answer>>Myasthenic Crisis vs. Cholinergic Crisis
salivation, lacrimation, urination, defecation, GI upset, emesis,
miosis
cholinergic crisis S+S - correct answer>>SLUDGE
atelectasis LLL left
pleural effusion
--->due to elevation of left diaphragm (side of pancreas body)
bil. crackles
ARDS
---> due to phospholipase A relsease which "kills" type II alveolar cells thus
decreasing surfactant. - correct answer>>pulmonary complications of
pancreatitis
bruising in flank area (lower back area)
CORRECT ANSWERS
VERY BAD results in poor cerebral perfusion CPP= MAP-ICP - correct
answer>>high ICP with hypotension...
1. Elevated systolic BP
2. Bradycardia
3. Irregular respirations - correct answer>>Cushing's triad consists of:
A waves are "awful" - correct answer>>"A" Waves of ICP monitoring
B waves are bad - correct answer>>"B" waves of ICP monitoring
C waves are common - correct answer>>C waves of ICP monitoring
A waves and high ICP - correct answer>>cerebral vasospasm results in ___
waves and ____ ICP
No! hypotonic, increased cell swelling - correct answer>>should you give
0.45 NS to a patient with high ICP?
No! hypotonic, increased cell swelling - correct answer>>should you give
D5W to a patient with high ICP?
,No. Hyperventilation causes alkalosis, which increases vasoconstriction
which does lower ICP, but decreases cerebral blood flow - correct
answer>>Should hyperventilation be used to decrease ICP?
-Bleeding between the dura mater and the skull
Patient will decompensate faster RAPID symptoms can
cause UNCAL HERNIATION --->death S+S:
headache
confusion vomiting
ipsilateral pupil dilation usually before decreased LOC
contralateral hemiparesis/plegia - correct answer>>epidural hematomas
basilar fx
Check fluid coming out of nose for glucose, if positive, it is CSF
Could also put on gauze to check for clot surrounded by yellow halo---> Halo
sign
NO blowing nose!
Battles sign/raccoon eyes/otorrhea - correct answer>>your patient with a
skull fracture (you're not sure where) has lost cranial nerve I, sense of smell
and has a runny nose. What do you suspect?
cerebral hypermetabolism (after 30 mins) - correct answer>>in status
epilecticus, what is death due to?
bacterial meningitis - correct answer>>Low glucose in CSF
viral meningitis (60% is normal glucose) - correct answer>>normal glucose in
CSF
, 8-12 mins - correct answer>>after how long would you reconnect vent and
do an ABG for apnea test?
8-10 mins with pco2 >60 or >20 from baseline - correct answer>>positive
apnea test for brain death
Tensilon test:
Myasthenic--> improved symptoms
Cholinergic---> increased weakness and SLUDGE - correct
answer>>Myasthenic Crisis vs. Cholinergic Crisis
salivation, lacrimation, urination, defecation, GI upset, emesis,
miosis
cholinergic crisis S+S - correct answer>>SLUDGE
atelectasis LLL left
pleural effusion
--->due to elevation of left diaphragm (side of pancreas body)
bil. crackles
ARDS
---> due to phospholipase A relsease which "kills" type II alveolar cells thus
decreasing surfactant. - correct answer>>pulmonary complications of
pancreatitis
bruising in flank area (lower back area)
