NUR 425 EXAM 3 WITH QUESTIONS AND ANSWERS
(VERIFIED ANSWERS GRADED A+) LATEST UPDATE
2026/2027
Which of the following is the body's first line of defense against an acid-
base imbalance? - CORRECT ANSWER Chemical and protein buffers
In regards to acid-base imbalance, what does "compensation" mean? -
CORRECT ANSWER It is the body's attempt to correct the acid-base
imbalance
Which of the following places a patient at risk for a state of acidosis?
(SELECT ALL THAT APPLY)
a. A patient with severe anxiety
b. A patient rescued from a drowning
c. A patient who consumed an entire bottle of Tums
d. A patient with severe diarrhea
e. A patient with kidney failure - CORRECT ANSWER B,D,E
,In general, respiratory alkalosis is due to what? - CORRECT
ANSWER Breathing too quickly and/or deeply
Which of the following values is associated with "alkalosis"?
(SELECT ALL THAT APPLY)
a. ph: 7.5
b. CO2: 30
c. HCO3: 20
d. CO2: 45
e. HCO3: 45 - CORRECT ANSWER A,B,E
The amount of air in milliliters to be delivered with each breath
describes which ventilator setting? - CORRECT ANSWER Tidal
Volume
Patients A and B are both on mechanical ventilatory support.
,Patient A is receiving an FiO2 of 70% and patient B is receiving an FiO2
of 30%
Which statement about these patients is most accurate? - CORRECT
ANSWER 70% of the air being delivered to patient B is NOT oxygen
What is the nurse's responsibility related to intubation? - CORRECT
ANSWER Monitor the patient's SaO2 and alert the team of any
complications during intubation attempts
Which of the following is true about pressure versus volume modes? -
CORRECT ANSWER Pressure modes deliver breaths with a set
amount of pressure measured in cmH20
What is PEEP? - CORRECT ANSWER The amount of pressure
delivered at the end of exhalation aimed at keeping the alveoli open
Which of the following is the correct formula for calculating CPP? -
CORRECT ANSWER MAP-ICP=CPP
Which of the following is a normal ICP value? - CORRECT ANSWER
9
Which of the following is a normal CPP value? - CORRECT
ANSWER 80
, According to the Monro Kellie Hypothesis, which of the following is
true? - CORRECT ANSWER If the volume of the brain increases, the
blood and/or CSF must decrease
Calculate this patient's CPP and determine what nursing intervention is
indicated
MAP: 72
ICP: 20 - CORRECT ANSWER CPP is 52, measures to reduce ICP are
indicated
A 55 year old male with a brain tumor is hypoxic and hypercarbic (high
CO2), what is he at risk for? - CORRECT ANSWER Increased ICP
due to cerebral vasodilation
Calculate this patient's CPP and determine what nursing intervention is
indicated
MAP: 50
ICP: 5 - CORRECT ANSWER CPP: 45
Administer prescribed norepinephrine
(VERIFIED ANSWERS GRADED A+) LATEST UPDATE
2026/2027
Which of the following is the body's first line of defense against an acid-
base imbalance? - CORRECT ANSWER Chemical and protein buffers
In regards to acid-base imbalance, what does "compensation" mean? -
CORRECT ANSWER It is the body's attempt to correct the acid-base
imbalance
Which of the following places a patient at risk for a state of acidosis?
(SELECT ALL THAT APPLY)
a. A patient with severe anxiety
b. A patient rescued from a drowning
c. A patient who consumed an entire bottle of Tums
d. A patient with severe diarrhea
e. A patient with kidney failure - CORRECT ANSWER B,D,E
,In general, respiratory alkalosis is due to what? - CORRECT
ANSWER Breathing too quickly and/or deeply
Which of the following values is associated with "alkalosis"?
(SELECT ALL THAT APPLY)
a. ph: 7.5
b. CO2: 30
c. HCO3: 20
d. CO2: 45
e. HCO3: 45 - CORRECT ANSWER A,B,E
The amount of air in milliliters to be delivered with each breath
describes which ventilator setting? - CORRECT ANSWER Tidal
Volume
Patients A and B are both on mechanical ventilatory support.
,Patient A is receiving an FiO2 of 70% and patient B is receiving an FiO2
of 30%
Which statement about these patients is most accurate? - CORRECT
ANSWER 70% of the air being delivered to patient B is NOT oxygen
What is the nurse's responsibility related to intubation? - CORRECT
ANSWER Monitor the patient's SaO2 and alert the team of any
complications during intubation attempts
Which of the following is true about pressure versus volume modes? -
CORRECT ANSWER Pressure modes deliver breaths with a set
amount of pressure measured in cmH20
What is PEEP? - CORRECT ANSWER The amount of pressure
delivered at the end of exhalation aimed at keeping the alveoli open
Which of the following is the correct formula for calculating CPP? -
CORRECT ANSWER MAP-ICP=CPP
Which of the following is a normal ICP value? - CORRECT ANSWER
9
Which of the following is a normal CPP value? - CORRECT
ANSWER 80
, According to the Monro Kellie Hypothesis, which of the following is
true? - CORRECT ANSWER If the volume of the brain increases, the
blood and/or CSF must decrease
Calculate this patient's CPP and determine what nursing intervention is
indicated
MAP: 72
ICP: 20 - CORRECT ANSWER CPP is 52, measures to reduce ICP are
indicated
A 55 year old male with a brain tumor is hypoxic and hypercarbic (high
CO2), what is he at risk for? - CORRECT ANSWER Increased ICP
due to cerebral vasodilation
Calculate this patient's CPP and determine what nursing intervention is
indicated
MAP: 50
ICP: 5 - CORRECT ANSWER CPP: 45
Administer prescribed norepinephrine
