NU 641 FINAL EXAM 2026 | ADVANCED
PHARMACOLOGY FINAL EXAM | ACTUAL BUNDLE
OF REAL Q&A | A+ GRADED
Which of the following are loop diuretics?
A) Furosemide (Lasix), ethacrynic acid (Edecrin), bumetanide, and torsemide (Demadex)
B) Hydrochlorothiazide (Microzide), chlorothiazide (Diuril), and methylclothiazide
C) Acetazolamide (Diamox)
D) Spironolactone (Aldactone)
Correct Answer: A) Furosemide (Lasix), ethacrynic acid (Edecrin), bumetanide, and
torsemide (Demadex)
Rationale: The loop diuretics listed are furosemide (Lasix), ethacrynic acid (Edecrin),
bumetanide, and torsemide (Demadex). Hydrochlorothiazide, chlorothiazide, and
methylclothiazide are thiazide diuretics. Acetazolamide is a carbonic anhydrase inhibitor.
Spironolactone is a potassium-sparing diuretic. Therefore, option A is correct.
What is the mechanism of action of furosemide (Lasix)?
A) Acts in the thick segment of the ascending limb of the loop of Henle to block
reabsorption of Na2+ and Cl-, creating profound diuresis
B) Blocks reabsorption of Na2+ and Cl- in the early segment of the distal convoluted tubule
C) Inhibits carbonic anhydrase in the proximal convoluted tubule
D) Blocks aldosterone receptors in the collecting duct
Correct Answer: A) Acts in the thick segment of the ascending limb of the loop of
Henle to block reabsorption of Na2+ and Cl-, creating profound diuresis
Rationale: Furosemide acts in the thick segment of the ascending limb of the loop of Henle
to block reabsorption of Na2+ and Cl-, creating profound diuresis. Blocking reabsorption in
the early segment of the distal convoluted tubule is the mechanism of thiazide diuretics,
inhibiting carbonic anhydrase is the mechanism of carbonic anhydrase inhibitors, and
blocking aldosterone receptors is the mechanism of potassium-sparing diuretics.
Therefore, option A is correct.
What is the pharmacokinetics of furosemide (Lasix) when administered orally?
A) Takes 60 minutes to diuresis, lasts 8 hours, 20-80 mg, 1-2 doses daily
B) Diuresis begins in 2 hours, peaks 4-6 hours, persists up to 12 hours, 12.5-25 mg/day
C) Diuresis begins in 30 minutes, peaks 1-2 hours, persists up to 6 hours
D) Diuresis begins in 4 hours, peaks 8-10 hours, persists up to 24 hours
Correct Answer: A) Takes 60 minutes to diuresis, lasts 8 hours, 20-80 mg, 1-2 doses
,daily
Rationale: Furosemide administered orally takes 60 minutes to produce diuresis, lasts 8
hours, and is dosed at 20-80 mg, 1-2 times daily. Diuresis beginning in 2 hours, peaking 4-6
hours, and persisting up to 12 hours with a dose of 12.5-25 mg/day describes
hydrochlorothiazide. Options C and D do not reflect the pharmacokinetics of furosemide.
Therefore, option A is correct.
What are the therapeutic uses of furosemide (Lasix)?
A) Reserved for rapid situations: pulmonary edema associated with CHF, edema of hepatic,
cardiac, or renal origin that has been unresponsive to other diuretics, and HTN not
controlled with other diuretics
B) Essential HTN and edema
C) Glaucoma and altitude sickness
D) Hyperkalemia
Correct Answer: A) Reserved for rapid situations: pulmonary edema associated with
CHF, edema of hepatic, cardiac, or renal origin that has been unresponsive to other
diuretics, and HTN not controlled with other diuretics
Rationale: Furosemide is reserved for rapid situations including pulmonary edema
associated with CHF, edema of hepatic, cardiac, or renal origin that has been unresponsive
to other diuretics, and HTN not controlled with other diuretics. Essential HTN and edema
are therapeutic uses of thiazide diuretics. Glaucoma and altitude sickness are uses of
carbonic anhydrase inhibitors. Hyperkalemia is treated with potassium-sparing diuretics or
other measures. Therefore, option A is correct.
What adverse effect is unique to loop diuretics?
A) Ototoxicity
B) Hypokalemia
C) Hyponatremia
D) Hypotension
Correct Answer: A) Ototoxicity
Rationale: Ototoxicity is unique to loop diuretics. Hypokalemia, hyponatremia, and
hypotension can occur with both loop and thiazide diuretics. Therefore, option A is correct.
What is the black box warning for furosemide (Lasix)?
A) Profound diuresis and electrolyte depletion
B) Ototoxicity
C) Nephrotoxicity
D) Hepatotoxicity
Correct Answer: A) Profound diuresis and electrolyte depletion
,Rationale: The black box warning for furosemide is profound diuresis and electrolyte
depletion. Ototoxicity is a unique adverse effect of loop diuretics but is not the black box
warning. Nephrotoxicity and hepatotoxicity are not the black box warnings for furosemide.
Therefore, option A is correct.
Which drug interaction is a concern with furosemide (Lasix) in the presence of low
potassium?
A) Digoxin
B) Ototoxic drugs
C) Potassium-sparing diuretics
D) Beta-blockers
Correct Answer: A) Digoxin
Rationale: Digoxin is a concern with furosemide in the presence of low potassium because
hypokalemia increases the risk of digoxin toxicity. Ototoxic drugs and potassium-sparing
diuretics are also drug interactions with furosemide, but the concern with digoxin is
specifically related to low potassium. Beta-blockers are not listed as a drug interaction
with furosemide. Therefore, option A is correct.
Which drug interaction is a concern with furosemide (Lasix) because of additive
effects?
A) Ototoxic drugs
B) Digoxin
C) Beta-blockers
D) ACE inhibitors
Correct Answer: A) Ototoxic drugs
Rationale: Ototoxic drugs are a concern with furosemide because of additive ototoxic
effects. Digoxin is a concern in the presence of low potassium, potassium-sparing diuretics
are a concern because of electrolyte imbalance, and beta-blockers and ACE inhibitors are
not listed as drug interactions with furosemide. Therefore, option A is correct.
Which drug interaction is a concern with furosemide (Lasix) because of electrolyte
imbalance?
A) Potassium-sparing diuretics
B) Ototoxic drugs
C) Digoxin
D) Beta-blockers
Correct Answer: A) Potassium-sparing diuretics
Rationale: Potassium-sparing diuretics are a concern with furosemide because of
electrolyte imbalance. They may cause hyperkalemia when combined with furosemide,
, which causes hypokalemia. Ototoxic drugs are a concern because of additive ototoxic
effects, and digoxin is a concern in the presence of low potassium. Beta-blockers are not
listed as a drug interaction with furosemide. Therefore, option A is correct.
Which of the following are thiazide diuretics?
A) Hydrochlorothiazide (Microzide), chlorothiazide (Diuril), and methylclothiazide
B) Furosemide (Lasix), ethacrynic acid (Edecrin), bumetanide, and torsemide (Demadex)
C) Acetazolamide (Diamox)
D) Spironolactone (Aldactone)
Correct Answer: A) Hydrochlorothiazide (Microzide), chlorothiazide (Diuril), and
methylclothiazide
Rationale: The thiazide diuretics listed are hydrochlorothiazide (Microzide), chlorothiazide
(Diuril), and methylclothiazide. Furosemide, ethacrynic acid, bumetanide, and torsemide
are loop diuretics. Acetazolamide is a carbonic anhydrase inhibitor. Spironolactone is a
potassium-sparing diuretic. Therefore, option A is correct.
What is the mechanism of action of hydrochlorothiazide (Microzide)?
A) Promotes urine production by blocking the reabsorption of Na2+ and Cl- in the early
segment of the distal convoluted tubule
B) Acts in the thick segment of the ascending limb of the loop of Henle to block
reabsorption of Na2+ and Cl-
C) Inhibits carbonic anhydrase in the proximal convoluted tubule
D) Blocks aldosterone receptors in the collecting duct
Correct Answer: A) Promotes urine production by blocking the reabsorption of Na2+
and Cl- in the early segment of the distal convoluted tubule
Rationale: Hydrochlorothiazide promotes urine production by blocking the reabsorption of
Na2+ and Cl- in the early segment of the distal convoluted tubule. Acting in the thick
ascending limb of the loop of Henle is the mechanism of loop diuretics, inhibiting carbonic
anhydrase is the mechanism of carbonic anhydrase inhibitors, and blocking aldosterone
receptors is the mechanism of potassium-sparing diuretics. Therefore, option A is correct.
What is the pharmacokinetics of hydrochlorothiazide (Microzide) when administered
orally?
A) Diuresis begins in 2 hours, peaks 4-6 hours, persists up to 12 hours, 12.5-25 mg/day
B) Takes 60 minutes to diuresis, lasts 8 hours, 20-80 mg, 1-2 doses daily
C) Diuresis begins in 30 minutes, peaks 1-2 hours, persists up to 6 hours
D) Diuresis begins in 4 hours, peaks 8-10 hours, persists up to 24 hours
Correct Answer: A) Diuresis begins in 2 hours, peaks 4-6 hours, persists up to 12 hours,
12.5-25 mg/day
PHARMACOLOGY FINAL EXAM | ACTUAL BUNDLE
OF REAL Q&A | A+ GRADED
Which of the following are loop diuretics?
A) Furosemide (Lasix), ethacrynic acid (Edecrin), bumetanide, and torsemide (Demadex)
B) Hydrochlorothiazide (Microzide), chlorothiazide (Diuril), and methylclothiazide
C) Acetazolamide (Diamox)
D) Spironolactone (Aldactone)
Correct Answer: A) Furosemide (Lasix), ethacrynic acid (Edecrin), bumetanide, and
torsemide (Demadex)
Rationale: The loop diuretics listed are furosemide (Lasix), ethacrynic acid (Edecrin),
bumetanide, and torsemide (Demadex). Hydrochlorothiazide, chlorothiazide, and
methylclothiazide are thiazide diuretics. Acetazolamide is a carbonic anhydrase inhibitor.
Spironolactone is a potassium-sparing diuretic. Therefore, option A is correct.
What is the mechanism of action of furosemide (Lasix)?
A) Acts in the thick segment of the ascending limb of the loop of Henle to block
reabsorption of Na2+ and Cl-, creating profound diuresis
B) Blocks reabsorption of Na2+ and Cl- in the early segment of the distal convoluted tubule
C) Inhibits carbonic anhydrase in the proximal convoluted tubule
D) Blocks aldosterone receptors in the collecting duct
Correct Answer: A) Acts in the thick segment of the ascending limb of the loop of
Henle to block reabsorption of Na2+ and Cl-, creating profound diuresis
Rationale: Furosemide acts in the thick segment of the ascending limb of the loop of Henle
to block reabsorption of Na2+ and Cl-, creating profound diuresis. Blocking reabsorption in
the early segment of the distal convoluted tubule is the mechanism of thiazide diuretics,
inhibiting carbonic anhydrase is the mechanism of carbonic anhydrase inhibitors, and
blocking aldosterone receptors is the mechanism of potassium-sparing diuretics.
Therefore, option A is correct.
What is the pharmacokinetics of furosemide (Lasix) when administered orally?
A) Takes 60 minutes to diuresis, lasts 8 hours, 20-80 mg, 1-2 doses daily
B) Diuresis begins in 2 hours, peaks 4-6 hours, persists up to 12 hours, 12.5-25 mg/day
C) Diuresis begins in 30 minutes, peaks 1-2 hours, persists up to 6 hours
D) Diuresis begins in 4 hours, peaks 8-10 hours, persists up to 24 hours
Correct Answer: A) Takes 60 minutes to diuresis, lasts 8 hours, 20-80 mg, 1-2 doses
,daily
Rationale: Furosemide administered orally takes 60 minutes to produce diuresis, lasts 8
hours, and is dosed at 20-80 mg, 1-2 times daily. Diuresis beginning in 2 hours, peaking 4-6
hours, and persisting up to 12 hours with a dose of 12.5-25 mg/day describes
hydrochlorothiazide. Options C and D do not reflect the pharmacokinetics of furosemide.
Therefore, option A is correct.
What are the therapeutic uses of furosemide (Lasix)?
A) Reserved for rapid situations: pulmonary edema associated with CHF, edema of hepatic,
cardiac, or renal origin that has been unresponsive to other diuretics, and HTN not
controlled with other diuretics
B) Essential HTN and edema
C) Glaucoma and altitude sickness
D) Hyperkalemia
Correct Answer: A) Reserved for rapid situations: pulmonary edema associated with
CHF, edema of hepatic, cardiac, or renal origin that has been unresponsive to other
diuretics, and HTN not controlled with other diuretics
Rationale: Furosemide is reserved for rapid situations including pulmonary edema
associated with CHF, edema of hepatic, cardiac, or renal origin that has been unresponsive
to other diuretics, and HTN not controlled with other diuretics. Essential HTN and edema
are therapeutic uses of thiazide diuretics. Glaucoma and altitude sickness are uses of
carbonic anhydrase inhibitors. Hyperkalemia is treated with potassium-sparing diuretics or
other measures. Therefore, option A is correct.
What adverse effect is unique to loop diuretics?
A) Ototoxicity
B) Hypokalemia
C) Hyponatremia
D) Hypotension
Correct Answer: A) Ototoxicity
Rationale: Ototoxicity is unique to loop diuretics. Hypokalemia, hyponatremia, and
hypotension can occur with both loop and thiazide diuretics. Therefore, option A is correct.
What is the black box warning for furosemide (Lasix)?
A) Profound diuresis and electrolyte depletion
B) Ototoxicity
C) Nephrotoxicity
D) Hepatotoxicity
Correct Answer: A) Profound diuresis and electrolyte depletion
,Rationale: The black box warning for furosemide is profound diuresis and electrolyte
depletion. Ototoxicity is a unique adverse effect of loop diuretics but is not the black box
warning. Nephrotoxicity and hepatotoxicity are not the black box warnings for furosemide.
Therefore, option A is correct.
Which drug interaction is a concern with furosemide (Lasix) in the presence of low
potassium?
A) Digoxin
B) Ototoxic drugs
C) Potassium-sparing diuretics
D) Beta-blockers
Correct Answer: A) Digoxin
Rationale: Digoxin is a concern with furosemide in the presence of low potassium because
hypokalemia increases the risk of digoxin toxicity. Ototoxic drugs and potassium-sparing
diuretics are also drug interactions with furosemide, but the concern with digoxin is
specifically related to low potassium. Beta-blockers are not listed as a drug interaction
with furosemide. Therefore, option A is correct.
Which drug interaction is a concern with furosemide (Lasix) because of additive
effects?
A) Ototoxic drugs
B) Digoxin
C) Beta-blockers
D) ACE inhibitors
Correct Answer: A) Ototoxic drugs
Rationale: Ototoxic drugs are a concern with furosemide because of additive ototoxic
effects. Digoxin is a concern in the presence of low potassium, potassium-sparing diuretics
are a concern because of electrolyte imbalance, and beta-blockers and ACE inhibitors are
not listed as drug interactions with furosemide. Therefore, option A is correct.
Which drug interaction is a concern with furosemide (Lasix) because of electrolyte
imbalance?
A) Potassium-sparing diuretics
B) Ototoxic drugs
C) Digoxin
D) Beta-blockers
Correct Answer: A) Potassium-sparing diuretics
Rationale: Potassium-sparing diuretics are a concern with furosemide because of
electrolyte imbalance. They may cause hyperkalemia when combined with furosemide,
, which causes hypokalemia. Ototoxic drugs are a concern because of additive ototoxic
effects, and digoxin is a concern in the presence of low potassium. Beta-blockers are not
listed as a drug interaction with furosemide. Therefore, option A is correct.
Which of the following are thiazide diuretics?
A) Hydrochlorothiazide (Microzide), chlorothiazide (Diuril), and methylclothiazide
B) Furosemide (Lasix), ethacrynic acid (Edecrin), bumetanide, and torsemide (Demadex)
C) Acetazolamide (Diamox)
D) Spironolactone (Aldactone)
Correct Answer: A) Hydrochlorothiazide (Microzide), chlorothiazide (Diuril), and
methylclothiazide
Rationale: The thiazide diuretics listed are hydrochlorothiazide (Microzide), chlorothiazide
(Diuril), and methylclothiazide. Furosemide, ethacrynic acid, bumetanide, and torsemide
are loop diuretics. Acetazolamide is a carbonic anhydrase inhibitor. Spironolactone is a
potassium-sparing diuretic. Therefore, option A is correct.
What is the mechanism of action of hydrochlorothiazide (Microzide)?
A) Promotes urine production by blocking the reabsorption of Na2+ and Cl- in the early
segment of the distal convoluted tubule
B) Acts in the thick segment of the ascending limb of the loop of Henle to block
reabsorption of Na2+ and Cl-
C) Inhibits carbonic anhydrase in the proximal convoluted tubule
D) Blocks aldosterone receptors in the collecting duct
Correct Answer: A) Promotes urine production by blocking the reabsorption of Na2+
and Cl- in the early segment of the distal convoluted tubule
Rationale: Hydrochlorothiazide promotes urine production by blocking the reabsorption of
Na2+ and Cl- in the early segment of the distal convoluted tubule. Acting in the thick
ascending limb of the loop of Henle is the mechanism of loop diuretics, inhibiting carbonic
anhydrase is the mechanism of carbonic anhydrase inhibitors, and blocking aldosterone
receptors is the mechanism of potassium-sparing diuretics. Therefore, option A is correct.
What is the pharmacokinetics of hydrochlorothiazide (Microzide) when administered
orally?
A) Diuresis begins in 2 hours, peaks 4-6 hours, persists up to 12 hours, 12.5-25 mg/day
B) Takes 60 minutes to diuresis, lasts 8 hours, 20-80 mg, 1-2 doses daily
C) Diuresis begins in 30 minutes, peaks 1-2 hours, persists up to 6 hours
D) Diuresis begins in 4 hours, peaks 8-10 hours, persists up to 24 hours
Correct Answer: A) Diuresis begins in 2 hours, peaks 4-6 hours, persists up to 12 hours,
12.5-25 mg/day
