NSG 3130 | NSG 3130 Nursing Study Guide & Exam Prep 2026–2027 | NSG 3130
Nursing Exam Review | Nursing Assessment, Nursing Process, Clinical Judgment,
Patient Safety, Pharmacology, Medication Administration, Health Assessment,
Pathophysiology, Adult Health Nursing, Medical-Surgical Nursing, Nursing
Interventions, Patient Education, Care Planning, Prioritization, Delegation, Infection
Control, Evidence-Based Practice, Clinical Reasoning & Nursing Practice | Practice
Questions, Case Studies & Detailed Rationales
Question 1: A nurse is reviewing the basic principles of pharmacokinetics. Which
process describes the movement of a drug from its site of administration into
the bloodstream?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
CORRECT ANSWER: C. Absorption
Rationale: Absorption is the process by which a drug moves from its site of
administration into the bloodstream. Distribution follows absorption, describing
movement from blood to tissues. Metabolism refers to biotransformation, and
excretion is removal from the body.
Question 2: A patient asks why a medication prescribed for hypertension is
taken at the same time each day. Which pharmacokinetic principle best explains
the nurse's response?
A. Receptor selectivity
B. Therapeutic range maintenance
C. First-pass effect
D. Protein binding capacity
CORRECT ANSWER: B. Therapeutic range maintenance
Rationale: Consistent dosing intervals help maintain plasma drug concentrations
within the therapeutic range, optimizing efficacy while minimizing toxicity. This is
a core principle of safe pharmacotherapy.
Question 3: A nurse administers a drug intravenously. Which pharmacokinetic
phase is completely bypassed by this route?
,A. Absorption
B. Distribution
C. Metabolism
D. Excretion
CORRECT ANSWER: A. Absorption
Rationale: Intravenous administration places the drug directly into the
bloodstream, bypassing the absorption phase entirely. Distribution, metabolism,
and excretion still occur after administration.
Question 4: Which organ is primarily responsible for the metabolism of most
drugs in the body?
A. Kidney
B. Liver
C. Lungs
D. Spleen
CORRECT ANSWER: B. Liver
Rationale: The liver is the principal organ for drug metabolism due to its rich
supply of cytochrome P450 enzymes. The kidneys primarily excrete drugs and
metabolites.
Question 5: A nurse is teaching a patient about a drug with a narrow
therapeutic index. Which statement indicates the patient understands the
teaching?
A. "I can adjust my dose if I miss one."
B. "Small changes in dose can cause serious effects."
C. "This drug has no side effects."
D. "I can take it with any other medication."
CORRECT ANSWER: B. "Small changes in dose can cause serious effects."
Rationale: A narrow therapeutic index means the difference between therapeutic
and toxic doses is small, so minor dose changes can lead to toxicity or therapeutic
failure. Patients must adhere strictly to prescribed dosing.
,Question 6: Which term describes the proportion of a drug dose that reaches
systemic circulation unchanged?
A. Bioavailability
B. Half-life
C. Clearance
D. Volume of distribution
CORRECT ANSWER: A. Bioavailability
Rationale: Bioavailability is the fraction of an administered dose that reaches
systemic circulation in an active form. It is influenced by route, formulation, and
first-pass metabolism.
Question 7: A nurse is assessing a patient for adverse drug reactions. Which
factor most increases the risk of drug toxicity in older adults?
A. Increased gastric motility
B. Decreased renal function
C. Increased hepatic blood flow
D. Increased total body water
CORRECT ANSWER: B. Decreased renal function
Rationale: Older adults often have reduced renal clearance, leading to drug
accumulation and increased risk of toxicity. Age-related changes in hepatic
function and body composition also affect drug handling.
Question 8: Which medication classification is used to reverse the effects of an
opioid overdose?
A. Benzodiazepine
B. Opioid antagonist
C. Anticholinergic
D. Cholinesterase inhibitor
CORRECT ANSWER: B. Opioid antagonist
Rationale: Opioid antagonists such as naloxone competitively block opioid
receptors, reversing respiratory depression and sedation caused by opioid
overdose.
, Question 9: A patient is prescribed a drug that is highly protein-bound. Which
condition would most likely increase the free active drug concentration?
A. Hyperalbuminemia
B. Hypoalbuminemia
C. Increased renal excretion
D. Increased hepatic metabolism
CORRECT ANSWER: B. Hypoalbuminemia
Rationale: Hypoalbuminemia reduces binding sites, increasing free active drug
available for pharmacological effect and potential toxicity. This is common in
malnutrition, liver disease, and nephrotic syndrome.
Question 10: Which route of administration has the fastest onset of action?
A. Oral
B. Subcutaneous
C. Intramuscular
D. Intravenous
CORRECT ANSWER: D. Intravenous
Rationale: Intravenous administration delivers drug directly into the bloodstream,
producing the most rapid onset. Oral, subcutaneous, and intramuscular routes
require absorption before systemic effects occur.
Question 11: A nurse is reviewing a medication order for a drug with a half-life
of 6 hours. Approximately how long will it take for the drug to reach steady-
state plasma concentration with consistent dosing?
A. 6 hours
B. 12 hours
C. 24 hours
D. 48 hours
CORRECT ANSWER: C. 24 hours
Rationale: Steady state is generally reached after approximately 4 to 5 half-lives.
With a half-life of 6 hours, steady state occurs in about 24 to 30 hours.
Nursing Exam Review | Nursing Assessment, Nursing Process, Clinical Judgment,
Patient Safety, Pharmacology, Medication Administration, Health Assessment,
Pathophysiology, Adult Health Nursing, Medical-Surgical Nursing, Nursing
Interventions, Patient Education, Care Planning, Prioritization, Delegation, Infection
Control, Evidence-Based Practice, Clinical Reasoning & Nursing Practice | Practice
Questions, Case Studies & Detailed Rationales
Question 1: A nurse is reviewing the basic principles of pharmacokinetics. Which
process describes the movement of a drug from its site of administration into
the bloodstream?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
CORRECT ANSWER: C. Absorption
Rationale: Absorption is the process by which a drug moves from its site of
administration into the bloodstream. Distribution follows absorption, describing
movement from blood to tissues. Metabolism refers to biotransformation, and
excretion is removal from the body.
Question 2: A patient asks why a medication prescribed for hypertension is
taken at the same time each day. Which pharmacokinetic principle best explains
the nurse's response?
A. Receptor selectivity
B. Therapeutic range maintenance
C. First-pass effect
D. Protein binding capacity
CORRECT ANSWER: B. Therapeutic range maintenance
Rationale: Consistent dosing intervals help maintain plasma drug concentrations
within the therapeutic range, optimizing efficacy while minimizing toxicity. This is
a core principle of safe pharmacotherapy.
Question 3: A nurse administers a drug intravenously. Which pharmacokinetic
phase is completely bypassed by this route?
,A. Absorption
B. Distribution
C. Metabolism
D. Excretion
CORRECT ANSWER: A. Absorption
Rationale: Intravenous administration places the drug directly into the
bloodstream, bypassing the absorption phase entirely. Distribution, metabolism,
and excretion still occur after administration.
Question 4: Which organ is primarily responsible for the metabolism of most
drugs in the body?
A. Kidney
B. Liver
C. Lungs
D. Spleen
CORRECT ANSWER: B. Liver
Rationale: The liver is the principal organ for drug metabolism due to its rich
supply of cytochrome P450 enzymes. The kidneys primarily excrete drugs and
metabolites.
Question 5: A nurse is teaching a patient about a drug with a narrow
therapeutic index. Which statement indicates the patient understands the
teaching?
A. "I can adjust my dose if I miss one."
B. "Small changes in dose can cause serious effects."
C. "This drug has no side effects."
D. "I can take it with any other medication."
CORRECT ANSWER: B. "Small changes in dose can cause serious effects."
Rationale: A narrow therapeutic index means the difference between therapeutic
and toxic doses is small, so minor dose changes can lead to toxicity or therapeutic
failure. Patients must adhere strictly to prescribed dosing.
,Question 6: Which term describes the proportion of a drug dose that reaches
systemic circulation unchanged?
A. Bioavailability
B. Half-life
C. Clearance
D. Volume of distribution
CORRECT ANSWER: A. Bioavailability
Rationale: Bioavailability is the fraction of an administered dose that reaches
systemic circulation in an active form. It is influenced by route, formulation, and
first-pass metabolism.
Question 7: A nurse is assessing a patient for adverse drug reactions. Which
factor most increases the risk of drug toxicity in older adults?
A. Increased gastric motility
B. Decreased renal function
C. Increased hepatic blood flow
D. Increased total body water
CORRECT ANSWER: B. Decreased renal function
Rationale: Older adults often have reduced renal clearance, leading to drug
accumulation and increased risk of toxicity. Age-related changes in hepatic
function and body composition also affect drug handling.
Question 8: Which medication classification is used to reverse the effects of an
opioid overdose?
A. Benzodiazepine
B. Opioid antagonist
C. Anticholinergic
D. Cholinesterase inhibitor
CORRECT ANSWER: B. Opioid antagonist
Rationale: Opioid antagonists such as naloxone competitively block opioid
receptors, reversing respiratory depression and sedation caused by opioid
overdose.
, Question 9: A patient is prescribed a drug that is highly protein-bound. Which
condition would most likely increase the free active drug concentration?
A. Hyperalbuminemia
B. Hypoalbuminemia
C. Increased renal excretion
D. Increased hepatic metabolism
CORRECT ANSWER: B. Hypoalbuminemia
Rationale: Hypoalbuminemia reduces binding sites, increasing free active drug
available for pharmacological effect and potential toxicity. This is common in
malnutrition, liver disease, and nephrotic syndrome.
Question 10: Which route of administration has the fastest onset of action?
A. Oral
B. Subcutaneous
C. Intramuscular
D. Intravenous
CORRECT ANSWER: D. Intravenous
Rationale: Intravenous administration delivers drug directly into the bloodstream,
producing the most rapid onset. Oral, subcutaneous, and intramuscular routes
require absorption before systemic effects occur.
Question 11: A nurse is reviewing a medication order for a drug with a half-life
of 6 hours. Approximately how long will it take for the drug to reach steady-
state plasma concentration with consistent dosing?
A. 6 hours
B. 12 hours
C. 24 hours
D. 48 hours
CORRECT ANSWER: C. 24 hours
Rationale: Steady state is generally reached after approximately 4 to 5 half-lives.
With a half-life of 6 hours, steady state occurs in about 24 to 30 hours.
