Drug Therapy Review – Comprehensive Study
Guide & Practice Exam
Focus: Pharmacology principles, drug classifications, nursing
implications, medication safety, and clinical application
EXAM OVERVIEW
Drug therapy review encompasses the fundamental principles of
pharmacology, including pharmacokinetics (what the body does to the
drug) and pharmacodynamics (what the drug does to the body) . This exam
covers drug classifications, mechanisms of action, adverse effects, nursing
implications, medication safety, and clinical decision-making for major
drug categories.
Key Areas of Study
• Pharmacokinetics: Absorption, distribution, metabolism, excretion
(ADME)
• Pharmacodynamics: Drug-receptor interactions, agonists,
antagonists, therapeutic index
• Drug classifications: Antibiotics, cardiovascular, CNS, endocrine,
GI, respiratory, pain management
• Medication safety: Rights of administration, error prevention, drug
interactions, adverse effects
• Nursing implications: Assessment, monitoring, patient education,
evaluation
SECTION 1: Pharmacology Fundamentals (Questions 1-20)
Q1. Pharmacokinetics is defined as:
• A) The study of how drugs produce their effects on the body
• B) The study of what the body does to a drug
, • C) The study of drug interactions
• D) The study of drug toxicity
Answer: B – Pharmacokinetics is the study of drug movement throughout
the body, including absorption, distribution, metabolism, and excretion
(ADME). Pharmacodynamics is the study of what the drug does to the
body .
Q2. The four processes of pharmacokinetics in correct order are:
• A) Distribution, Absorption, Metabolism, Excretion
• B) Absorption, Distribution, Metabolism, Excretion
• C) Metabolism, Absorption, Distribution, Excretion
• D) Excretion, Absorption, Distribution, Metabolism
Answer: B – The correct order is Absorption (drug enters bloodstream),
Distribution (drug moves to tissues), Metabolism (drug is biotransformed),
and Excretion (drug is eliminated from the body) .
Q3. A drug that binds to a receptor and activates it to produce a
response is called a(n):
• A) Antagonist
• B) Agonist
• C) Enzyme
• D) Inhibitor
Answer: B – An agonist is a drug that binds to a receptor and produces a
response. An antagonist binds to a receptor but blocks or prevents a
response .
Q4. A drug with a narrow therapeutic index means that:
, • A) A larger dose is required to achieve the desired effect
• B) There is little difference between the therapeutic dose and the
toxic dose
• C) The drug is not effective
• D) The drug has a wide margin of safety
Answer: B – A narrow therapeutic index means the dose required for
therapeutic effect is very close to the dose that causes toxicity. These drugs
require careful monitoring (e.g., digoxin, warfarin, lithium) .
Q5. First-pass metabolism refers to:
• A) Drug being metabolized in the kidneys before reaching systemic
circulation
• B) Drug being metabolized in the liver before reaching systemic
circulation
• C) Drug being excreted unchanged in the urine
• D) Drug binding to plasma proteins
Answer: B – First-pass metabolism occurs when oral medications are
absorbed through the GI tract and metabolized by the liver before reaching
systemic circulation. This reduces the amount of active drug available .
Q6. Which route of administration bypasses first-pass metabolism?
• A) Oral
• B) Sublingual
• C) Nasogastric tube
• D) Rectal
Answer: B – Sublingual (and intravenous, intramuscular, subcutaneous,
and topical) routes bypass first-pass metabolism. Enteral routes (oral, NG
tube, rectal) generally undergo first-pass metabolism .
Guide & Practice Exam
Focus: Pharmacology principles, drug classifications, nursing
implications, medication safety, and clinical application
EXAM OVERVIEW
Drug therapy review encompasses the fundamental principles of
pharmacology, including pharmacokinetics (what the body does to the
drug) and pharmacodynamics (what the drug does to the body) . This exam
covers drug classifications, mechanisms of action, adverse effects, nursing
implications, medication safety, and clinical decision-making for major
drug categories.
Key Areas of Study
• Pharmacokinetics: Absorption, distribution, metabolism, excretion
(ADME)
• Pharmacodynamics: Drug-receptor interactions, agonists,
antagonists, therapeutic index
• Drug classifications: Antibiotics, cardiovascular, CNS, endocrine,
GI, respiratory, pain management
• Medication safety: Rights of administration, error prevention, drug
interactions, adverse effects
• Nursing implications: Assessment, monitoring, patient education,
evaluation
SECTION 1: Pharmacology Fundamentals (Questions 1-20)
Q1. Pharmacokinetics is defined as:
• A) The study of how drugs produce their effects on the body
• B) The study of what the body does to a drug
, • C) The study of drug interactions
• D) The study of drug toxicity
Answer: B – Pharmacokinetics is the study of drug movement throughout
the body, including absorption, distribution, metabolism, and excretion
(ADME). Pharmacodynamics is the study of what the drug does to the
body .
Q2. The four processes of pharmacokinetics in correct order are:
• A) Distribution, Absorption, Metabolism, Excretion
• B) Absorption, Distribution, Metabolism, Excretion
• C) Metabolism, Absorption, Distribution, Excretion
• D) Excretion, Absorption, Distribution, Metabolism
Answer: B – The correct order is Absorption (drug enters bloodstream),
Distribution (drug moves to tissues), Metabolism (drug is biotransformed),
and Excretion (drug is eliminated from the body) .
Q3. A drug that binds to a receptor and activates it to produce a
response is called a(n):
• A) Antagonist
• B) Agonist
• C) Enzyme
• D) Inhibitor
Answer: B – An agonist is a drug that binds to a receptor and produces a
response. An antagonist binds to a receptor but blocks or prevents a
response .
Q4. A drug with a narrow therapeutic index means that:
, • A) A larger dose is required to achieve the desired effect
• B) There is little difference between the therapeutic dose and the
toxic dose
• C) The drug is not effective
• D) The drug has a wide margin of safety
Answer: B – A narrow therapeutic index means the dose required for
therapeutic effect is very close to the dose that causes toxicity. These drugs
require careful monitoring (e.g., digoxin, warfarin, lithium) .
Q5. First-pass metabolism refers to:
• A) Drug being metabolized in the kidneys before reaching systemic
circulation
• B) Drug being metabolized in the liver before reaching systemic
circulation
• C) Drug being excreted unchanged in the urine
• D) Drug binding to plasma proteins
Answer: B – First-pass metabolism occurs when oral medications are
absorbed through the GI tract and metabolized by the liver before reaching
systemic circulation. This reduces the amount of active drug available .
Q6. Which route of administration bypasses first-pass metabolism?
• A) Oral
• B) Sublingual
• C) Nasogastric tube
• D) Rectal
Answer: B – Sublingual (and intravenous, intramuscular, subcutaneous,
and topical) routes bypass first-pass metabolism. Enteral routes (oral, NG
tube, rectal) generally undergo first-pass metabolism .
