NSG 5140 WEEK 4 EXAM - ADVANCED
CLINICAL CONCEPTS
1. Which physiological mechanism is primarily responsible for the development of cardiac
remodeling in patients with chronic heart failure?
A. Chronic activation of the renin-angiotensin-aldosterone system (RAAS)
B. Excessive parasympathetic stimulation of the sinoatrial node
C. Acute decrease in systemic vascular resistance
D. Inhibition of the natriuretic peptide system
Answer: A
Conceptual Explanation: Chronic RAAS activation leads to structural changes in the heart,
such as hypertrophy and fibrosis, which are hallmarks of remodeling.
2. A patient with a history of asthma is diagnosed with hypertension. Which class of
antihypertensive agents should be used with extreme caution?
A. Angiotensin II receptor blockers
B. Non-selective beta-blockers
C. Calcium channel blockers
,D. Thiazide diuretics
Answer: B
Conceptual Explanation: Non-selective beta-blockers like propranolol can block B2
receptors in the lungs, potentially causing bronchospasm in asthmatic patients.
3. Which of the following describes the ‘first-pass effect’ in pharmacology?
A. The rapid distribution of drug to the brain
B. The excretion of drugs via the biliary tract
C. The binding of drugs to plasma albumin
D. Extensive metabolism of a drug by the liver before it reaches systemic circulation
Answer: D
Conceptual Explanation: The first-pass effect refers to the metabolism of an orally
administered drug by the liver or gut wall before reaching the systemic bloodstream.
4. What is the primary mechanism of action of Angiotensin-Converting Enzyme (ACE)
inhibitors?
A. Blocking the binding of Angiotensin II to AT1 receptors
B. Directly inhibiting the secretion of renin from the kidneys
C. Preventing the conversion of Angiotensin I to Angiotensin II
D. Promoting the breakdown of aldosterone
, Answer: C
Conceptual Explanation: ACE inhibitors prevent the conversion of Angiotensin I to the
potent vasoconstrictor Angiotensin II.
5. A patient presents with a serum potassium level of 6.2 mEq/L. Which medication is most
likely to contribute to this condition?
A. Furosemide
B. Spironolactone
C. Hydrochlorothiazide
D. Amlodipine
Answer: B
Conceptual Explanation: Spironolactone is a potassium-sparing diuretic that can lead to
hyperkalemia by inhibiting aldosterone’s effects on the distal tubule.
6. Which clinical finding is most characteristic of right-sided heart failure?
A. Pulmonary crackles and orthopnea
B. Decreased peripheral pulses
C. Pink frothy sputum
D. Peripheral edema and jugular venous distention
Answer: D
CLINICAL CONCEPTS
1. Which physiological mechanism is primarily responsible for the development of cardiac
remodeling in patients with chronic heart failure?
A. Chronic activation of the renin-angiotensin-aldosterone system (RAAS)
B. Excessive parasympathetic stimulation of the sinoatrial node
C. Acute decrease in systemic vascular resistance
D. Inhibition of the natriuretic peptide system
Answer: A
Conceptual Explanation: Chronic RAAS activation leads to structural changes in the heart,
such as hypertrophy and fibrosis, which are hallmarks of remodeling.
2. A patient with a history of asthma is diagnosed with hypertension. Which class of
antihypertensive agents should be used with extreme caution?
A. Angiotensin II receptor blockers
B. Non-selective beta-blockers
C. Calcium channel blockers
,D. Thiazide diuretics
Answer: B
Conceptual Explanation: Non-selective beta-blockers like propranolol can block B2
receptors in the lungs, potentially causing bronchospasm in asthmatic patients.
3. Which of the following describes the ‘first-pass effect’ in pharmacology?
A. The rapid distribution of drug to the brain
B. The excretion of drugs via the biliary tract
C. The binding of drugs to plasma albumin
D. Extensive metabolism of a drug by the liver before it reaches systemic circulation
Answer: D
Conceptual Explanation: The first-pass effect refers to the metabolism of an orally
administered drug by the liver or gut wall before reaching the systemic bloodstream.
4. What is the primary mechanism of action of Angiotensin-Converting Enzyme (ACE)
inhibitors?
A. Blocking the binding of Angiotensin II to AT1 receptors
B. Directly inhibiting the secretion of renin from the kidneys
C. Preventing the conversion of Angiotensin I to Angiotensin II
D. Promoting the breakdown of aldosterone
, Answer: C
Conceptual Explanation: ACE inhibitors prevent the conversion of Angiotensin I to the
potent vasoconstrictor Angiotensin II.
5. A patient presents with a serum potassium level of 6.2 mEq/L. Which medication is most
likely to contribute to this condition?
A. Furosemide
B. Spironolactone
C. Hydrochlorothiazide
D. Amlodipine
Answer: B
Conceptual Explanation: Spironolactone is a potassium-sparing diuretic that can lead to
hyperkalemia by inhibiting aldosterone’s effects on the distal tubule.
6. Which clinical finding is most characteristic of right-sided heart failure?
A. Pulmonary crackles and orthopnea
B. Decreased peripheral pulses
C. Pink frothy sputum
D. Peripheral edema and jugular venous distention
Answer: D
