NR341 Pharmacology Study Guide PDF |
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
Question 1: Which phase of pharmacokinetics describes the movement of a drug from the site of
administration into the systemic circulation?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
CORRECT ANSWER: C. Absorption
RATIONALE: Absorption is the process by which a drug enters the bloodstream from the site of
administration. Distribution involves movement to tissues, metabolism involves chemical alteration, and
excretion involves removal from the body.
Question 2: A nurse is administering a medication with a narrow therapeutic index. What is the
priority nursing action?
A. Monitor the patient for signs of toxicity and therapeutic effect
B. Administer the medication with food to increase absorption
C. Encourage the patient to increase fluid intake
D. Teach the patient to skip doses if side effects occur
CORRECT ANSWER: A. Monitor the patient for signs of toxicity and therapeutic effect
RATIONALE: Drugs with a narrow therapeutic index have a small margin between therapeutic and toxic
doses. Close monitoring of blood levels and clinical signs is essential to ensure safety and efficacy.
Question 3: Which route of administration provides the most rapid onset of action?
A. Oral
B. Intramuscular
C. Intravenous
D. Subcutaneous
CORRECT ANSWER: C. Intravenous
RATIONALE: Intravenous (IV) administration delivers the drug directly into the bloodstream, bypassing
absorption barriers and providing the fastest onset of action compared to other routes.
Question 4: What is the primary purpose of a loading dose?
A. To maintain steady-state drug levels
B. To rapidly achieve therapeutic drug levels
,NR341 Pharmacology Study Guide PDF |
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
C. To reduce the risk of adverse effects
D. To extend the half-life of the medication
CORRECT ANSWER: B. To rapidly achieve therapeutic drug levels
RATIONALE: A loading dose is a higher initial dose given to quickly raise the drug concentration in the
blood to the therapeutic range, followed by maintenance doses to sustain it.
Question 5: Which organ is primarily responsible for the metabolism of most medications?
A. Kidneys
B. Liver
C. Lungs
D. Pancreas
CORRECT ANSWER: B. Liver
RATIONALE: The liver contains enzymes, particularly the cytochrome P450 system, that chemically alter
drugs to facilitate their excretion. The kidneys are primarily responsible for excretion.
Question 6: A patient reports an allergy to penicillin. Which class of antibiotics should the nurse
anticipate avoiding?
A. Macrolides
B. Cephalosporins
C. Tetracyclines
D. Aminoglycosides
CORRECT ANSWER: B. Cephalosporins
RATIONALE: Cephalosporins share a similar beta-lactam ring structure with penicillins, creating a risk of
cross-sensitivity and allergic reactions in patients allergic to penicillin.
Question 7: Which assessment finding indicates a potential adverse effect of opioid analgesics?
A. Dilated pupils
B. Respiratory depression
C. Hypertension
D. Diarrhea
CORRECT ANSWER: B. Respiratory depression
RATIONALE: Opioids suppress the respiratory center in the brainstem. Respiratory depression is a
serious and potentially life-threatening adverse effect that requires immediate monitoring.
,NR341 Pharmacology Study Guide PDF |
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
Question 8: What is the mechanism of action of nonsteroidal anti-inflammatory drugs (NSAIDs)?
A. Inhibition of cyclooxygenase (COX) enzymes
B. Stimulation of opioid receptors
C. Blockade of histamine receptors
D. Inhibition of proton pumps
CORRECT ANSWER: A. Inhibition of cyclooxygenase (COX) enzymes
RATIONALE: NSAIDs work by inhibiting COX enzymes, which reduces the production of prostaglandins
responsible for pain, inflammation, and fever.
Question 9: A patient is prescribed warfarin. Which dietary instruction is most important?
A. Increase intake of leafy green vegetables
B. Maintain consistent intake of vitamin K-rich foods
C. Avoid all dairy products
D. Increase protein intake significantly
CORRECT ANSWER: B. Maintain consistent intake of vitamin K-rich foods
RATIONALE: Vitamin K antagonizes the effect of warfarin. Sudden changes in vitamin K intake (found in
leafy greens) can alter INR levels, leading to bleeding or clotting risks. Consistency is key.
Question 10: Which medication is classified as a high-alert medication due to the risk of severe harm if
administered incorrectly?
A. Acetaminophen
B. Insulin
C. Ibuprofen
D. Loratadine
CORRECT ANSWER: B. Insulin
RATIONALE: Insulin is a high-alert medication because errors in dosing can lead to severe hypoglycemia,
brain damage, or death. It requires double-checks and strict protocols.
Question 11: What is the primary indication for prescribing a proton pump inhibitor (PPI)?
A. Hypertension
B. Gastroesophageal reflux disease (GERD)
C. Bacterial infection
D. Hyperlipidemia
CORRECT ANSWER: B. Gastroesophageal reflux disease (GERD)
, NR341 Pharmacology Study Guide PDF |
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
RATIONALE: PPIs reduce gastric acid secretion by inhibiting the hydrogen-potassium ATPase enzyme in
gastric parietal cells, making them effective for treating GERD and peptic ulcers.
Question 12: Which side effect is commonly associated with ACE inhibitors?
A. Dry cough
B. Constipation
C. Tachycardia
D. Hyperglycemia
CORRECT ANSWER: A. Dry cough
RATIONALE: A persistent, dry cough is a well-known side effect of ACE inhibitors caused by the
accumulation of bradykinin. It often necessitates switching to an ARB.
Question 13: A nurse is preparing to administer digoxin. Which assessment is priority before
administration?
A. Blood pressure
B. Apical pulse
C. Respiratory rate
D. Temperature
CORRECT ANSWER: B. Apical pulse
RATIONALE: Digoxin slows the heart rate. The apical pulse must be assessed for one full minute; if it is
below 60 beats per minute in an adult, the dose is typically withheld.
Question 14: Which drug class is used to treat acute asthma exacerbations?
A. Long-acting beta agonists (LABA)
B. Short-acting beta agonists (SABA)
C. Inhaled corticosteroids
D. Leukotriene modifiers
CORRECT ANSWER: B. Short-acting beta agonists (SABA)
RATIONALE: SABAs, such as albuterol, provide rapid bronchodilation and are the first-line treatment for
acute asthma symptoms. LABAs and corticosteroids are for maintenance.
Question 15: What is the antidote for acetaminophen overdose?
A. Naloxone
B. Flumazenil
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
Question 1: Which phase of pharmacokinetics describes the movement of a drug from the site of
administration into the systemic circulation?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
CORRECT ANSWER: C. Absorption
RATIONALE: Absorption is the process by which a drug enters the bloodstream from the site of
administration. Distribution involves movement to tissues, metabolism involves chemical alteration, and
excretion involves removal from the body.
Question 2: A nurse is administering a medication with a narrow therapeutic index. What is the
priority nursing action?
A. Monitor the patient for signs of toxicity and therapeutic effect
B. Administer the medication with food to increase absorption
C. Encourage the patient to increase fluid intake
D. Teach the patient to skip doses if side effects occur
CORRECT ANSWER: A. Monitor the patient for signs of toxicity and therapeutic effect
RATIONALE: Drugs with a narrow therapeutic index have a small margin between therapeutic and toxic
doses. Close monitoring of blood levels and clinical signs is essential to ensure safety and efficacy.
Question 3: Which route of administration provides the most rapid onset of action?
A. Oral
B. Intramuscular
C. Intravenous
D. Subcutaneous
CORRECT ANSWER: C. Intravenous
RATIONALE: Intravenous (IV) administration delivers the drug directly into the bloodstream, bypassing
absorption barriers and providing the fastest onset of action compared to other routes.
Question 4: What is the primary purpose of a loading dose?
A. To maintain steady-state drug levels
B. To rapidly achieve therapeutic drug levels
,NR341 Pharmacology Study Guide PDF |
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
C. To reduce the risk of adverse effects
D. To extend the half-life of the medication
CORRECT ANSWER: B. To rapidly achieve therapeutic drug levels
RATIONALE: A loading dose is a higher initial dose given to quickly raise the drug concentration in the
blood to the therapeutic range, followed by maintenance doses to sustain it.
Question 5: Which organ is primarily responsible for the metabolism of most medications?
A. Kidneys
B. Liver
C. Lungs
D. Pancreas
CORRECT ANSWER: B. Liver
RATIONALE: The liver contains enzymes, particularly the cytochrome P450 system, that chemically alter
drugs to facilitate their excretion. The kidneys are primarily responsible for excretion.
Question 6: A patient reports an allergy to penicillin. Which class of antibiotics should the nurse
anticipate avoiding?
A. Macrolides
B. Cephalosporins
C. Tetracyclines
D. Aminoglycosides
CORRECT ANSWER: B. Cephalosporins
RATIONALE: Cephalosporins share a similar beta-lactam ring structure with penicillins, creating a risk of
cross-sensitivity and allergic reactions in patients allergic to penicillin.
Question 7: Which assessment finding indicates a potential adverse effect of opioid analgesics?
A. Dilated pupils
B. Respiratory depression
C. Hypertension
D. Diarrhea
CORRECT ANSWER: B. Respiratory depression
RATIONALE: Opioids suppress the respiratory center in the brainstem. Respiratory depression is a
serious and potentially life-threatening adverse effect that requires immediate monitoring.
,NR341 Pharmacology Study Guide PDF |
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
Question 8: What is the mechanism of action of nonsteroidal anti-inflammatory drugs (NSAIDs)?
A. Inhibition of cyclooxygenase (COX) enzymes
B. Stimulation of opioid receptors
C. Blockade of histamine receptors
D. Inhibition of proton pumps
CORRECT ANSWER: A. Inhibition of cyclooxygenase (COX) enzymes
RATIONALE: NSAIDs work by inhibiting COX enzymes, which reduces the production of prostaglandins
responsible for pain, inflammation, and fever.
Question 9: A patient is prescribed warfarin. Which dietary instruction is most important?
A. Increase intake of leafy green vegetables
B. Maintain consistent intake of vitamin K-rich foods
C. Avoid all dairy products
D. Increase protein intake significantly
CORRECT ANSWER: B. Maintain consistent intake of vitamin K-rich foods
RATIONALE: Vitamin K antagonizes the effect of warfarin. Sudden changes in vitamin K intake (found in
leafy greens) can alter INR levels, leading to bleeding or clotting risks. Consistency is key.
Question 10: Which medication is classified as a high-alert medication due to the risk of severe harm if
administered incorrectly?
A. Acetaminophen
B. Insulin
C. Ibuprofen
D. Loratadine
CORRECT ANSWER: B. Insulin
RATIONALE: Insulin is a high-alert medication because errors in dosing can lead to severe hypoglycemia,
brain damage, or death. It requires double-checks and strict protocols.
Question 11: What is the primary indication for prescribing a proton pump inhibitor (PPI)?
A. Hypertension
B. Gastroesophageal reflux disease (GERD)
C. Bacterial infection
D. Hyperlipidemia
CORRECT ANSWER: B. Gastroesophageal reflux disease (GERD)
, NR341 Pharmacology Study Guide PDF |
Comprehensive Nursing Pharmacology Review |
Drug Classifications, Mechanisms of Action, Side
Effects, Therapeutic Uses, Dosage Calculations,
Patient Safety & NCLEX Exam Prep Bundle
RATIONALE: PPIs reduce gastric acid secretion by inhibiting the hydrogen-potassium ATPase enzyme in
gastric parietal cells, making them effective for treating GERD and peptic ulcers.
Question 12: Which side effect is commonly associated with ACE inhibitors?
A. Dry cough
B. Constipation
C. Tachycardia
D. Hyperglycemia
CORRECT ANSWER: A. Dry cough
RATIONALE: A persistent, dry cough is a well-known side effect of ACE inhibitors caused by the
accumulation of bradykinin. It often necessitates switching to an ARB.
Question 13: A nurse is preparing to administer digoxin. Which assessment is priority before
administration?
A. Blood pressure
B. Apical pulse
C. Respiratory rate
D. Temperature
CORRECT ANSWER: B. Apical pulse
RATIONALE: Digoxin slows the heart rate. The apical pulse must be assessed for one full minute; if it is
below 60 beats per minute in an adult, the dose is typically withheld.
Question 14: Which drug class is used to treat acute asthma exacerbations?
A. Long-acting beta agonists (LABA)
B. Short-acting beta agonists (SABA)
C. Inhaled corticosteroids
D. Leukotriene modifiers
CORRECT ANSWER: B. Short-acting beta agonists (SABA)
RATIONALE: SABAs, such as albuterol, provide rapid bronchodilation and are the first-line treatment for
acute asthma symptoms. LABAs and corticosteroids are for maintenance.
Question 15: What is the antidote for acetaminophen overdose?
A. Naloxone
B. Flumazenil
