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PRN 1381 PRINCIPLES OF PHARMACOLOGY FINAL EXAM
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES
PRN 1381 PRINCIPLES OF PHARMACOLOGY FINAL EXAM
MOSTLY TESTED EXAM COVERAGE AREAS
Basic Pharmacology Principles — pharmacokinetics, pharmacodynamics, drug terminology, therapeutic
index, half-life, bioavailability, potency, efficacy, and medication safety. (DocMerit)
Autonomic Nervous System Pharmacology — cholinergic agonists and antagonists, adrenergic agonists
and blockers, receptor actions, adverse effects, and nursing priorities. (DocMerit)
Central Nervous System Pharmacology — analgesics, sedatives, antidepressants, antipsychotics,
anticonvulsants, Parkinson medications, and neurologic safety considerations. (Studocu)
Cardiovascular Pharmacology — antihypertensives, ACE inhibitors, ARBs, beta blockers, calcium-
channel blockers, diuretics, antianginals, cardiac glycosides, and antiarrhythmics. (Docsity)
Anticoagulant, Antiplatelet, and Lipid-Lowering Therapy — heparins, warfarin, direct oral
anticoagulants, aspirin, statins, monitoring, interactions, and bleeding precautions. (Studocu)
Respiratory Pharmacology — bronchodilators, inhaled corticosteroids, leukotriene modifiers,
respiratory adverse effects, administration technique, and asthma/COPD management. (TestUstad)
Gastrointestinal Pharmacology — antacids, H2 blockers, proton-pump inhibitors, antiemetics, laxatives,
antidiarrheals, and medication-related gastrointestinal safety. (TestUstad)
Endocrine Pharmacology — insulin, oral diabetes medications, thyroid drugs, corticosteroids,
reproductive hormones, and recognition of endocrine-related adverse effects. (TestUstad)
Anti-Infective and Immunologic Pharmacology — antibiotics, antivirals, antifungals, antimycobacterials,
antimicrobial resistance, cultures, adverse effects, and immunosuppressants. (DocMerit)
Special Populations, Medication Safety, and Clinical Monitoring — pediatric and older-adult
considerations, pregnancy, renal/hepatic impairment, drug interactions, patient teaching, adverse
reactions, and nursing prioritization. (DocMerit)
QUESTIONS 1–250
Basic Pharmacology Principles
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1. Which pharmacokinetic process describes movement of a medication from its administration site
into systemic circulation after oral dosing?
A. Drug elimination through renal filtration
B. Drug absorption into systemic circulation
C. Drug metabolism within hepatic enzymes
D. Drug distribution throughout body tissues
Answer: B
Rationale: Absorption is the movement of a drug from its administration site into systemic circulation.
Oral medications must pass through gastrointestinal barriers before entering circulation. Distribution
occurs afterward, metabolism chemically modifies drugs, and elimination removes drug or metabolites
from the body.
2. A patient receives an intravenous medication, and the nurse explains why its onset is faster than
oral administration. Which principle best explains this difference?
A. Intravenous drugs bypass absorption barriers
B. Intravenous drugs undergo greater protein binding
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C. Intravenous drugs require extensive hepatic metabolism
D. Intravenous drugs remain longer within gastrointestinal tissues
Answer: A
Rationale: Intravenous administration places medication directly into systemic circulation, essentially
bypassing the absorption phase. This produces rapid availability and predictable onset. Oral medications
must dissolve, cross gastrointestinal membranes, and potentially undergo first-pass hepatic metabolism
before reaching systemic circulation.
3. What pharmacological term describes the percentage of an administered dose that reaches
systemic circulation in unchanged form?
A. Potency
B. Clearance
C. Bioavailability
D. Therapeutic efficacy
Answer: C
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Rationale: Bioavailability represents the fraction of administered medication that reaches systemic
circulation unchanged and is available to produce effects. Intravenous drugs have essentially complete
bioavailability, whereas oral drugs may have reduced bioavailability because of incomplete absorption
or first-pass metabolism.
4. Why can extensive first-pass hepatic metabolism significantly reduce the effectiveness of certain
orally administered medications?
A. It prevents medication from binding receptors
B. It increases renal elimination before absorption
C. It causes immediate medication protein binding
D. It metabolizes medication before systemic circulation
Answer: D
Rationale: First-pass metabolism occurs when absorbed medication travels through the portal
circulation to the liver before reaching systemic circulation. Hepatic enzymes may substantially
metabolize the drug, reducing the amount of unchanged medication available systemically.
PRN 1381 PRINCIPLES OF PHARMACOLOGY FINAL EXAM
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES
PRN 1381 PRINCIPLES OF PHARMACOLOGY FINAL EXAM
MOSTLY TESTED EXAM COVERAGE AREAS
Basic Pharmacology Principles — pharmacokinetics, pharmacodynamics, drug terminology, therapeutic
index, half-life, bioavailability, potency, efficacy, and medication safety. (DocMerit)
Autonomic Nervous System Pharmacology — cholinergic agonists and antagonists, adrenergic agonists
and blockers, receptor actions, adverse effects, and nursing priorities. (DocMerit)
Central Nervous System Pharmacology — analgesics, sedatives, antidepressants, antipsychotics,
anticonvulsants, Parkinson medications, and neurologic safety considerations. (Studocu)
Cardiovascular Pharmacology — antihypertensives, ACE inhibitors, ARBs, beta blockers, calcium-
channel blockers, diuretics, antianginals, cardiac glycosides, and antiarrhythmics. (Docsity)
Anticoagulant, Antiplatelet, and Lipid-Lowering Therapy — heparins, warfarin, direct oral
anticoagulants, aspirin, statins, monitoring, interactions, and bleeding precautions. (Studocu)
Respiratory Pharmacology — bronchodilators, inhaled corticosteroids, leukotriene modifiers,
respiratory adverse effects, administration technique, and asthma/COPD management. (TestUstad)
Gastrointestinal Pharmacology — antacids, H2 blockers, proton-pump inhibitors, antiemetics, laxatives,
antidiarrheals, and medication-related gastrointestinal safety. (TestUstad)
Endocrine Pharmacology — insulin, oral diabetes medications, thyroid drugs, corticosteroids,
reproductive hormones, and recognition of endocrine-related adverse effects. (TestUstad)
Anti-Infective and Immunologic Pharmacology — antibiotics, antivirals, antifungals, antimycobacterials,
antimicrobial resistance, cultures, adverse effects, and immunosuppressants. (DocMerit)
Special Populations, Medication Safety, and Clinical Monitoring — pediatric and older-adult
considerations, pregnancy, renal/hepatic impairment, drug interactions, patient teaching, adverse
reactions, and nursing prioritization. (DocMerit)
QUESTIONS 1–250
Basic Pharmacology Principles
, Page 2 of 171
1. Which pharmacokinetic process describes movement of a medication from its administration site
into systemic circulation after oral dosing?
A. Drug elimination through renal filtration
B. Drug absorption into systemic circulation
C. Drug metabolism within hepatic enzymes
D. Drug distribution throughout body tissues
Answer: B
Rationale: Absorption is the movement of a drug from its administration site into systemic circulation.
Oral medications must pass through gastrointestinal barriers before entering circulation. Distribution
occurs afterward, metabolism chemically modifies drugs, and elimination removes drug or metabolites
from the body.
2. A patient receives an intravenous medication, and the nurse explains why its onset is faster than
oral administration. Which principle best explains this difference?
A. Intravenous drugs bypass absorption barriers
B. Intravenous drugs undergo greater protein binding
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C. Intravenous drugs require extensive hepatic metabolism
D. Intravenous drugs remain longer within gastrointestinal tissues
Answer: A
Rationale: Intravenous administration places medication directly into systemic circulation, essentially
bypassing the absorption phase. This produces rapid availability and predictable onset. Oral medications
must dissolve, cross gastrointestinal membranes, and potentially undergo first-pass hepatic metabolism
before reaching systemic circulation.
3. What pharmacological term describes the percentage of an administered dose that reaches
systemic circulation in unchanged form?
A. Potency
B. Clearance
C. Bioavailability
D. Therapeutic efficacy
Answer: C
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Rationale: Bioavailability represents the fraction of administered medication that reaches systemic
circulation unchanged and is available to produce effects. Intravenous drugs have essentially complete
bioavailability, whereas oral drugs may have reduced bioavailability because of incomplete absorption
or first-pass metabolism.
4. Why can extensive first-pass hepatic metabolism significantly reduce the effectiveness of certain
orally administered medications?
A. It prevents medication from binding receptors
B. It increases renal elimination before absorption
C. It causes immediate medication protein binding
D. It metabolizes medication before systemic circulation
Answer: D
Rationale: First-pass metabolism occurs when absorbed medication travels through the portal
circulation to the liver before reaching systemic circulation. Hepatic enzymes may substantially
metabolize the drug, reducing the amount of unchanged medication available systemically.
