NUR 6011/NUR6011 Final Exam V1 |
Advance Pharmacology Q&A with
Rationale | William Paterson University
1. When a drug has a high first-pass effect, which route of administration is most significantly
impacted in terms of bioavailability?
A. Intravenous
B. Sublingual
C. Intramuscular
D. Oral
Answer: D
Rationale: The first-pass effect refers to the rapid hepatic metabolism of a drug before it
reaches the systemic circulation. When a drug is taken orally, it is absorbed in the
gastrointestinal tract and enters the portal vein to the liver. This process can significantly
reduce the concentration of the active drug before it reaches its target site.
2. Which of the following describes the mechanism of action of ACE inhibitors in the
treatment of hypertension?
A. Blocking the conversion of Angiotensin I to Angiotensin II
B. Directly blocking the Angiotensin II receptors
C. Inhibiting the release of renin from the kidneys
,D. Increasing the excretion of potassium in the urine
Answer: A
Rationale: ACE inhibitors work by inhibiting the Angiotensin-Converting Enzyme, which is
responsible for turning Angiotensin I into the potent vasoconstrictor Angiotensin II. By
reducing Angiotensin II levels, these drugs promote vasodilation and decrease aldosterone
secretion. This leads to a reduction in blood pressure and prevents some of the adverse
cardiac remodeling associated with hypertension.
3. A patient is prescribed Warfarin. Which of the following lab values is most critical to
monitor to ensure therapeutic efficacy and safety?
A. Partial Thromboplastin Time (PTT)
B. Platelet count
C. International Normalized Ratio (INR)
D. Serum creatinine
Answer: C
Rationale: The INR is the standard laboratory test used to monitor the anticoagulant effect
of Warfarin. It provides a consistent measurement across different laboratories despite
variations in thromboplastin reagents. Maintaining the INR within a specific target range is
essential to prevent both clotting and excessive bleeding.
, 4. Which medication is considered the first-line treatment for Type 2 Diabetes Mellitus,
provided there are no contraindications?
A. Metformin
B. Sitagliptin
C. Glyburide
D. Liraglutide
Answer: A
Rationale: Metformin is the gold standard for initial therapy in Type 2 Diabetes because of
its efficacy in lowering HbA1c and its favorable safety profile. It works primarily by
decreasing hepatic glucose production and improving insulin sensitivity in peripheral
tissues. Furthermore, Metformin does not typically cause weight gain or hypoglycemia,
which are common concerns with other antidiabetic agents.
5. What is the primary mechanism of action of Loop Diuretics like Furosemide?
A. Inhibition of the Na+/K+/2Cl- cotransporter in the thick ascending limb of the loop of
Henle
B. Antagonism of aldosterone receptors in the distal tubule
C. Inhibition of sodium reabsorption in the distal convoluted tubule
D. Inhibition of carbonic anhydrase in the proximal tubule
Answer: A
Advance Pharmacology Q&A with
Rationale | William Paterson University
1. When a drug has a high first-pass effect, which route of administration is most significantly
impacted in terms of bioavailability?
A. Intravenous
B. Sublingual
C. Intramuscular
D. Oral
Answer: D
Rationale: The first-pass effect refers to the rapid hepatic metabolism of a drug before it
reaches the systemic circulation. When a drug is taken orally, it is absorbed in the
gastrointestinal tract and enters the portal vein to the liver. This process can significantly
reduce the concentration of the active drug before it reaches its target site.
2. Which of the following describes the mechanism of action of ACE inhibitors in the
treatment of hypertension?
A. Blocking the conversion of Angiotensin I to Angiotensin II
B. Directly blocking the Angiotensin II receptors
C. Inhibiting the release of renin from the kidneys
,D. Increasing the excretion of potassium in the urine
Answer: A
Rationale: ACE inhibitors work by inhibiting the Angiotensin-Converting Enzyme, which is
responsible for turning Angiotensin I into the potent vasoconstrictor Angiotensin II. By
reducing Angiotensin II levels, these drugs promote vasodilation and decrease aldosterone
secretion. This leads to a reduction in blood pressure and prevents some of the adverse
cardiac remodeling associated with hypertension.
3. A patient is prescribed Warfarin. Which of the following lab values is most critical to
monitor to ensure therapeutic efficacy and safety?
A. Partial Thromboplastin Time (PTT)
B. Platelet count
C. International Normalized Ratio (INR)
D. Serum creatinine
Answer: C
Rationale: The INR is the standard laboratory test used to monitor the anticoagulant effect
of Warfarin. It provides a consistent measurement across different laboratories despite
variations in thromboplastin reagents. Maintaining the INR within a specific target range is
essential to prevent both clotting and excessive bleeding.
, 4. Which medication is considered the first-line treatment for Type 2 Diabetes Mellitus,
provided there are no contraindications?
A. Metformin
B. Sitagliptin
C. Glyburide
D. Liraglutide
Answer: A
Rationale: Metformin is the gold standard for initial therapy in Type 2 Diabetes because of
its efficacy in lowering HbA1c and its favorable safety profile. It works primarily by
decreasing hepatic glucose production and improving insulin sensitivity in peripheral
tissues. Furthermore, Metformin does not typically cause weight gain or hypoglycemia,
which are common concerns with other antidiabetic agents.
5. What is the primary mechanism of action of Loop Diuretics like Furosemide?
A. Inhibition of the Na+/K+/2Cl- cotransporter in the thick ascending limb of the loop of
Henle
B. Antagonism of aldosterone receptors in the distal tubule
C. Inhibition of sodium reabsorption in the distal convoluted tubule
D. Inhibition of carbonic anhydrase in the proximal tubule
Answer: A
