NR 565 Midterm Actual Exam Questions
And Answers Latest Update 2026 /2027
100% Pass Guaranteed Actual Test
Chamberlain University
A nurse practitioner (NP) is caring for a pregnant patient at 6 weeks gestation. Which phase of fetal
development carries the highest risk for drug-induced structural malformations?
A) Pre-implantation stage
B) Embryonic period (First trimester)
C) Fetal period (Second trimester)
D) Perinatal period (Third trimester)
Correct Answer: B
Which physiological change during late pregnancy typically increases the elimination rate of renally
excreted drugs?
A) Decreased cardiac output
B) Reduced renal plasma flow
C) Increased Glomerular Filtration Rate (GFR)
D) Increased serum albumin levels
Correct Answer: C
Why do infants under 1 year of age often require higher weight-based doses (mg/kg) of water-soluble
medications compared to adults?
A) Infants have higher hepatic clearance
,B) Total body water comprises a significantly higher percentage of body weight in infants
C) Infants have lower drug absorption in the stomach
D) Plasma protein binding is higher in infants
Correct Answer: B
Transdermal absorption of topical medications in neonates and infants is enhanced primarily because:
A) Skin pH is extremely acidic
B) Stratum corneum is thin and skin hydration is high
C) Peripheral circulation is sluggish
D) Subcutaneous fat is dense
Correct Answer: B
A 78-year-old patient with hypoalbuminemia (serum albumin = 2.2 g/dL) is prescribed warfarin. How
will this impact drug activity?
A) Free (unbound) drug concentration will increase, raising toxicity risk
B) Drug elimination will stop entirely
C) Total drug concentration will double
D) Drug efficacy will drop significantly
Correct Answer: A
What primary physiological decline in geriatric patients is most responsible for drug toxicity?
A) Decreased gastric pH
B) Decline in renal function and GFR
C) Increased liver mass
D) Increased serum albumin production
Correct Answer: B
The BEERS Criteria list is primarily utilized by advanced practice nurses to:
A) Calculate pediatric drug dosages
B) Identify potentially inappropriate medications (PIMs) in adults aged 65 and older
,C) Determine schedule classifications for controlled substances
D) Adjust drug therapy for liver failure
Correct Answer: B
A patient who is a CYP2D6 ultrafast metabolizer is prescribed codeine for pain. What is the main risk?
A) Lack of pain relief due to inactive metabolites
B) Rapid conversion to morphine resulting in severe respiratory depression
C) Acute liver failure from prodrug accumulation
D) Severe gastrointestinal bleeding
Correct Answer: B
When a drug that acts as a CYP450 enzyme inducer is added to a patient's regimen containing a
substrate drug, what is the expected outcome?
A) Substrate drug levels increase
B) Substrate drug levels decrease due to accelerated metabolism
C) Enzyme activity is completely inhibited
D) Substrate absorption increases
Correct Answer: B
What term describes the rapid liver metabolism that degrades an oral drug before it reaches systemic
circulation?
A) Bioavailability
B) First-pass effect
C) Clearance
D) Half-life
Correct Answer: B
Which factor reduces oral absorption of weak acid drugs in neonates?
A) High gastric acidity
B) Elevated (less acidic) gastric pH
, C) Rapid gastric emptying
D) High intestinal motility
Correct Answer: B
A lipid-soluble medication administered to an elderly patient will generally have a Volume of
Distribution (Vd) that is:
A) Decreased due to reduced body water
B) Increased due to an age-related increase in relative body fat
C) Unchanged regardless of body composition
D) Zero
Correct Answer: B
Which statement regarding steady state ($C_{ss}$) is correct?
A) It takes approximately 4 to 5 half-lives to reach steady state regardless of dose frequency
B) Giving a larger dose reaches steady state faster
C) Steady state occurs when drug intake equals zero
D) Loading doses eliminate the need for steady state
Correct Answer: A
An agonist that binds to a receptor and produces a submaximal biological response even when all
receptors are occupied is a:
A) Full agonist
B) Partial agonist
C) Competitive antagonist
D) Inverse agonist
Correct Answer: B
What happens to the dose-response curve when a non-competitive antagonist is introduced?
A) Shifts to the left
B) Shifts to the right without lowering maximal response
And Answers Latest Update 2026 /2027
100% Pass Guaranteed Actual Test
Chamberlain University
A nurse practitioner (NP) is caring for a pregnant patient at 6 weeks gestation. Which phase of fetal
development carries the highest risk for drug-induced structural malformations?
A) Pre-implantation stage
B) Embryonic period (First trimester)
C) Fetal period (Second trimester)
D) Perinatal period (Third trimester)
Correct Answer: B
Which physiological change during late pregnancy typically increases the elimination rate of renally
excreted drugs?
A) Decreased cardiac output
B) Reduced renal plasma flow
C) Increased Glomerular Filtration Rate (GFR)
D) Increased serum albumin levels
Correct Answer: C
Why do infants under 1 year of age often require higher weight-based doses (mg/kg) of water-soluble
medications compared to adults?
A) Infants have higher hepatic clearance
,B) Total body water comprises a significantly higher percentage of body weight in infants
C) Infants have lower drug absorption in the stomach
D) Plasma protein binding is higher in infants
Correct Answer: B
Transdermal absorption of topical medications in neonates and infants is enhanced primarily because:
A) Skin pH is extremely acidic
B) Stratum corneum is thin and skin hydration is high
C) Peripheral circulation is sluggish
D) Subcutaneous fat is dense
Correct Answer: B
A 78-year-old patient with hypoalbuminemia (serum albumin = 2.2 g/dL) is prescribed warfarin. How
will this impact drug activity?
A) Free (unbound) drug concentration will increase, raising toxicity risk
B) Drug elimination will stop entirely
C) Total drug concentration will double
D) Drug efficacy will drop significantly
Correct Answer: A
What primary physiological decline in geriatric patients is most responsible for drug toxicity?
A) Decreased gastric pH
B) Decline in renal function and GFR
C) Increased liver mass
D) Increased serum albumin production
Correct Answer: B
The BEERS Criteria list is primarily utilized by advanced practice nurses to:
A) Calculate pediatric drug dosages
B) Identify potentially inappropriate medications (PIMs) in adults aged 65 and older
,C) Determine schedule classifications for controlled substances
D) Adjust drug therapy for liver failure
Correct Answer: B
A patient who is a CYP2D6 ultrafast metabolizer is prescribed codeine for pain. What is the main risk?
A) Lack of pain relief due to inactive metabolites
B) Rapid conversion to morphine resulting in severe respiratory depression
C) Acute liver failure from prodrug accumulation
D) Severe gastrointestinal bleeding
Correct Answer: B
When a drug that acts as a CYP450 enzyme inducer is added to a patient's regimen containing a
substrate drug, what is the expected outcome?
A) Substrate drug levels increase
B) Substrate drug levels decrease due to accelerated metabolism
C) Enzyme activity is completely inhibited
D) Substrate absorption increases
Correct Answer: B
What term describes the rapid liver metabolism that degrades an oral drug before it reaches systemic
circulation?
A) Bioavailability
B) First-pass effect
C) Clearance
D) Half-life
Correct Answer: B
Which factor reduces oral absorption of weak acid drugs in neonates?
A) High gastric acidity
B) Elevated (less acidic) gastric pH
, C) Rapid gastric emptying
D) High intestinal motility
Correct Answer: B
A lipid-soluble medication administered to an elderly patient will generally have a Volume of
Distribution (Vd) that is:
A) Decreased due to reduced body water
B) Increased due to an age-related increase in relative body fat
C) Unchanged regardless of body composition
D) Zero
Correct Answer: B
Which statement regarding steady state ($C_{ss}$) is correct?
A) It takes approximately 4 to 5 half-lives to reach steady state regardless of dose frequency
B) Giving a larger dose reaches steady state faster
C) Steady state occurs when drug intake equals zero
D) Loading doses eliminate the need for steady state
Correct Answer: A
An agonist that binds to a receptor and produces a submaximal biological response even when all
receptors are occupied is a:
A) Full agonist
B) Partial agonist
C) Competitive antagonist
D) Inverse agonist
Correct Answer: B
What happens to the dose-response curve when a non-competitive antagonist is introduced?
A) Shifts to the left
B) Shifts to the right without lowering maximal response
