68W LPC Questions And Answers
Practice Questions with Solutions
Newest | Already Graded A+
1–20: Pharmacology & Medication Basics
Q1. What is the study of substances that interact with living
organisms through chemical processes?
A1. Pharmacology.
Rationale: Pharmacology encompasses all chemical interactions
with living systems; it is the foundation of medication knowledge
for medics.
Q2. What does pharmacokinetics describe?
A2. What the body does to a drug (absorption, distribution,
metabolism, excretion).
Rationale: Pharmacokinetics focuses on drug movement and
modification within the body.
Q3. What does pharmacodynamics describe?
A3. What the drug does to the body (mechanism of action,
effects).
Rationale: Pharmacodynamics is the study of drug effects and
their mechanisms.
Q4. Define "indication" for a medication.
A4. The specific reason or condition for giving a medication.
Rationale: Indication justifies use; giving a drug without an
indication is inappropriate.
,Q5. What is the maximum dose of acetaminophen (Tylenol) for an
adult in 24 hours?
A5. 3000 mg (or 4000 mg in some guidelines; 3000 mg is safer).
Rationale: Exceeding this can cause hepatotoxicity; many LPC
protocols use 3000 mg limit.
Q6. What is titration of a medication?
A6. Adjusting dose, interval, or quantity to achieve a desired
effect.
Rationale: Titration allows fine-tuning (e.g., pain control or blood
pressure management).
Q7. What is an absolute contraindication?
A7. A situation where the medication must never be given.
Rationale: Example: known anaphylaxis to penicillin → never give
penicillin.
Q8. What is a relative contraindication?
A8. A situation where the medication may be given if benefits
outweigh risks.
Rationale: Example: using aspirin with active peptic ulcer – only if
no alternative.
Q9. Define side effect.
A9. An unintended but predictable consequence of a medication.
Rationale: Side effects are known and often dose-dependent
(e.g., drowsiness from diphenhydramine).
Q10. What is therapeutic level?
A10. The blood concentration required to achieve the desired
therapeutic effect.
,Rationale: Below this, drug is ineffective; above may cause
toxicity.
Q11. What is the half-life of a drug?
A11. Time required for the body to eliminate half of the drug
dose.
Rationale: Half-life determines dosing interval; after 5 half-lives,
drug is essentially eliminated.
Q12. Which class of medications kills or inhibits bacteria?
A12. Antibiotics.
Rationale: Antibiotics target bacteria; they do not work against
viruses or fungi.
Q13. What chemical is released from mast cells during allergic
reactions?
A13. Histamine.
Rationale: Histamine causes vasodilation, bronchoconstriction,
and increased gastric acid.
Q14. What is the antidote for acetaminophen overdose?
A14. N-acetylcysteine (Mucomyst).
Rationale: N-acetylcysteine replenishes glutathione, preventing
toxic metabolite accumulation.
Q15. Why should aspirin (ASA) not be given to children?
A15. Risk of Reye’s syndrome.
Rationale: Reye’s syndrome causes liver and brain damage in
children with viral illness given aspirin.
Q16. What is the action of naloxone (Narcan)?
A16. Reverses opioid-induced respiratory depression.
, Rationale: Naloxone is a competitive opioid antagonist; it has a
short duration, so relapse may occur.
Q17. For anaphylaxis, what dose of epinephrine (1:1000) is given
IM?
A17. 0.3-0.5 mg (0.3-0.5 mL).
Rationale: Epinephrine causes vasoconstriction and
bronchodilation; IM injection in mid-anterolateral thigh is
preferred.
Q18. What is the first-line medication for a patient with active,
prolonged seizure?
A18. Lorazepam (Ativan) IV.
Rationale: Benzodiazepines are first-line for status epilepticus;
lorazepam has longer duration than diazepam.
Q19. What is the primary danger of giving high-dose
acetaminophen over time?
A19. Liver damage (hepatotoxicity).
Rationale: Toxic metabolite NAPQI depletes glutathione, causing
hepatic necrosis.
Q20. Histamines stimulate which of the following: gastric
secretions, capillary dilation, bronchial smooth muscle
constriction, or all of the above?
A20. All of the above.
Rationale: Histamine H2 receptors increase gastric acid; H1 cause
vasodilation and bronchoconstriction.
Practice Questions with Solutions
Newest | Already Graded A+
1–20: Pharmacology & Medication Basics
Q1. What is the study of substances that interact with living
organisms through chemical processes?
A1. Pharmacology.
Rationale: Pharmacology encompasses all chemical interactions
with living systems; it is the foundation of medication knowledge
for medics.
Q2. What does pharmacokinetics describe?
A2. What the body does to a drug (absorption, distribution,
metabolism, excretion).
Rationale: Pharmacokinetics focuses on drug movement and
modification within the body.
Q3. What does pharmacodynamics describe?
A3. What the drug does to the body (mechanism of action,
effects).
Rationale: Pharmacodynamics is the study of drug effects and
their mechanisms.
Q4. Define "indication" for a medication.
A4. The specific reason or condition for giving a medication.
Rationale: Indication justifies use; giving a drug without an
indication is inappropriate.
,Q5. What is the maximum dose of acetaminophen (Tylenol) for an
adult in 24 hours?
A5. 3000 mg (or 4000 mg in some guidelines; 3000 mg is safer).
Rationale: Exceeding this can cause hepatotoxicity; many LPC
protocols use 3000 mg limit.
Q6. What is titration of a medication?
A6. Adjusting dose, interval, or quantity to achieve a desired
effect.
Rationale: Titration allows fine-tuning (e.g., pain control or blood
pressure management).
Q7. What is an absolute contraindication?
A7. A situation where the medication must never be given.
Rationale: Example: known anaphylaxis to penicillin → never give
penicillin.
Q8. What is a relative contraindication?
A8. A situation where the medication may be given if benefits
outweigh risks.
Rationale: Example: using aspirin with active peptic ulcer – only if
no alternative.
Q9. Define side effect.
A9. An unintended but predictable consequence of a medication.
Rationale: Side effects are known and often dose-dependent
(e.g., drowsiness from diphenhydramine).
Q10. What is therapeutic level?
A10. The blood concentration required to achieve the desired
therapeutic effect.
,Rationale: Below this, drug is ineffective; above may cause
toxicity.
Q11. What is the half-life of a drug?
A11. Time required for the body to eliminate half of the drug
dose.
Rationale: Half-life determines dosing interval; after 5 half-lives,
drug is essentially eliminated.
Q12. Which class of medications kills or inhibits bacteria?
A12. Antibiotics.
Rationale: Antibiotics target bacteria; they do not work against
viruses or fungi.
Q13. What chemical is released from mast cells during allergic
reactions?
A13. Histamine.
Rationale: Histamine causes vasodilation, bronchoconstriction,
and increased gastric acid.
Q14. What is the antidote for acetaminophen overdose?
A14. N-acetylcysteine (Mucomyst).
Rationale: N-acetylcysteine replenishes glutathione, preventing
toxic metabolite accumulation.
Q15. Why should aspirin (ASA) not be given to children?
A15. Risk of Reye’s syndrome.
Rationale: Reye’s syndrome causes liver and brain damage in
children with viral illness given aspirin.
Q16. What is the action of naloxone (Narcan)?
A16. Reverses opioid-induced respiratory depression.
, Rationale: Naloxone is a competitive opioid antagonist; it has a
short duration, so relapse may occur.
Q17. For anaphylaxis, what dose of epinephrine (1:1000) is given
IM?
A17. 0.3-0.5 mg (0.3-0.5 mL).
Rationale: Epinephrine causes vasoconstriction and
bronchodilation; IM injection in mid-anterolateral thigh is
preferred.
Q18. What is the first-line medication for a patient with active,
prolonged seizure?
A18. Lorazepam (Ativan) IV.
Rationale: Benzodiazepines are first-line for status epilepticus;
lorazepam has longer duration than diazepam.
Q19. What is the primary danger of giving high-dose
acetaminophen over time?
A19. Liver damage (hepatotoxicity).
Rationale: Toxic metabolite NAPQI depletes glutathione, causing
hepatic necrosis.
Q20. Histamines stimulate which of the following: gastric
secretions, capillary dilation, bronchial smooth muscle
constriction, or all of the above?
A20. All of the above.
Rationale: Histamine H2 receptors increase gastric acid; H1 cause
vasodilation and bronchoconstriction.
