South University NSG 6001 Advanced
Pharmacology ACTUAL EXAM | Week
1 Quiz Review | 50 Questions | 100%
Correct Answers | Verified Q&A | Pass
Guaranteed - A+ Graded
SECTION 1: PHARMACOKINETICS (15 Questions)
Q1: A patient is prescribed a medication that undergoes extensive first-pass metabolism. Which
route of administration would completely bypass first-pass metabolism?
● A. Oral
● B. Sublingual
● C. Intravenous [CORRECT]
● D. Subcutaneous
Correct Answer: C
Rationale: Intravenous administration delivers the medication directly into the systemic circulation,
completely bypassing first-pass metabolism. Sublingual (B) administration bypasses first-pass
metabolism but absorption occurs through oral mucosa. Oral (A) undergoes first-pass metabolism
in the liver. Subcutaneous (D) also bypasses first-pass metabolism but not as immediate as IV.
,Q2: A patient has a medication with a half-life of 12 hours. Approximately how long will it take to
reach steady state?
● A. 12 hours
● B. 24 hours
● C. 48 hours
● D. 60 hours [CORRECT]
Correct Answer: D
Rationale: Steady state is achieved after approximately 4-5 half-lives. With a half-life of 12 hours, 4
half-lives = 48 hours, 5 half-lives = 60 hours. Therefore, steady state is typically reached within
48-60 hours. South University Note: The standard approximation is 4-5 half-lives to reach steady
state.
Q3: Which factor would INCREASE the absorption of a weak acid drug from the stomach?
● A. Increased gastric pH (more alkaline)
● B. Decreased gastric pH (more acidic) [CORRECT]
● C. Increased intestinal motility
● D. Presence of food
Correct Answer: B
Rationale: Weak acid drugs are in their non-ionized (lipid-soluble) form in acidic environments,
facilitating absorption across lipid membranes. The stomach's acidic pH (pH 1-3) favors absorption
of weak acids. Increasing gastric pH (A) would ionize the drug and decrease absorption. South
University Note: Remember the pH partition hypothesis—weak acids absorb in acidic environments,
weak bases in alkaline environments.
, Q4: A highly lipophilic drug is administered to an obese patient. What effect will this have on the
volume of distribution (Vd)?
● A. Decreased Vd
● B. Increased Vd [CORRECT]
● C. No change in Vd
● D. Decreased plasma concentration only
Correct Answer: B
Rationale: Lipophilic drugs distribute extensively into adipose tissue. Obese patients have
increased body fat, leading to a larger volume of distribution for lipophilic drugs (e.g.,
benzodiazepines, antipsychotics). This can result in prolonged drug effects and longer half-lives
due to redistribution from fat stores.
Q5: A patient with low albumin levels is prescribed warfarin (highly protein-bound). What is the
primary clinical concern?
● A. Decreased drug absorption
● B. Increased free fraction and potential toxicity [CORRECT]
● C. Decreased drug metabolism
● D. Increased drug excretion
Correct Answer: B
Rationale: Warfarin is 99% protein-bound (primarily to albumin). With low albumin, less drug is
bound, increasing the free (unbound, pharmacologically active) fraction. This increases the risk of
bleeding despite "normal" total warfarin levels. South University Note: Only unbound drug is
pharmacologically active and can be metabolized or excreted.
Pharmacology ACTUAL EXAM | Week
1 Quiz Review | 50 Questions | 100%
Correct Answers | Verified Q&A | Pass
Guaranteed - A+ Graded
SECTION 1: PHARMACOKINETICS (15 Questions)
Q1: A patient is prescribed a medication that undergoes extensive first-pass metabolism. Which
route of administration would completely bypass first-pass metabolism?
● A. Oral
● B. Sublingual
● C. Intravenous [CORRECT]
● D. Subcutaneous
Correct Answer: C
Rationale: Intravenous administration delivers the medication directly into the systemic circulation,
completely bypassing first-pass metabolism. Sublingual (B) administration bypasses first-pass
metabolism but absorption occurs through oral mucosa. Oral (A) undergoes first-pass metabolism
in the liver. Subcutaneous (D) also bypasses first-pass metabolism but not as immediate as IV.
,Q2: A patient has a medication with a half-life of 12 hours. Approximately how long will it take to
reach steady state?
● A. 12 hours
● B. 24 hours
● C. 48 hours
● D. 60 hours [CORRECT]
Correct Answer: D
Rationale: Steady state is achieved after approximately 4-5 half-lives. With a half-life of 12 hours, 4
half-lives = 48 hours, 5 half-lives = 60 hours. Therefore, steady state is typically reached within
48-60 hours. South University Note: The standard approximation is 4-5 half-lives to reach steady
state.
Q3: Which factor would INCREASE the absorption of a weak acid drug from the stomach?
● A. Increased gastric pH (more alkaline)
● B. Decreased gastric pH (more acidic) [CORRECT]
● C. Increased intestinal motility
● D. Presence of food
Correct Answer: B
Rationale: Weak acid drugs are in their non-ionized (lipid-soluble) form in acidic environments,
facilitating absorption across lipid membranes. The stomach's acidic pH (pH 1-3) favors absorption
of weak acids. Increasing gastric pH (A) would ionize the drug and decrease absorption. South
University Note: Remember the pH partition hypothesis—weak acids absorb in acidic environments,
weak bases in alkaline environments.
, Q4: A highly lipophilic drug is administered to an obese patient. What effect will this have on the
volume of distribution (Vd)?
● A. Decreased Vd
● B. Increased Vd [CORRECT]
● C. No change in Vd
● D. Decreased plasma concentration only
Correct Answer: B
Rationale: Lipophilic drugs distribute extensively into adipose tissue. Obese patients have
increased body fat, leading to a larger volume of distribution for lipophilic drugs (e.g.,
benzodiazepines, antipsychotics). This can result in prolonged drug effects and longer half-lives
due to redistribution from fat stores.
Q5: A patient with low albumin levels is prescribed warfarin (highly protein-bound). What is the
primary clinical concern?
● A. Decreased drug absorption
● B. Increased free fraction and potential toxicity [CORRECT]
● C. Decreased drug metabolism
● D. Increased drug excretion
Correct Answer: B
Rationale: Warfarin is 99% protein-bound (primarily to albumin). With low albumin, less drug is
bound, increasing the free (unbound, pharmacologically active) fraction. This increases the risk of
bleeding despite "normal" total warfarin levels. South University Note: Only unbound drug is
pharmacologically active and can be metabolized or excreted.
