NR507 – NURSE PRACTITIONER MIDTERM EXAM
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES GRADED A+ LATEST
Question 1
A 56-year-old male presents with exertional chest discomfort relieved by rest.
Which pathophysiologic mechanism most likely explains his symptoms?
A. Coronary artery vasospasm
B. Myocardial oxygen supply-demand mismatch
C. Acute plaque rupture with thrombosis
D. Ventricular remodeling
Correct Answer: B
Rationale: Stable angina results from a mismatch between myocardial oxygen
demand and supply, typically due to fixed coronary artery narrowing. Plaque
rupture is associated with acute coronary syndromes.
Question 2
A patient with long-standing hypertension develops left ventricular hypertrophy.
This adaptation primarily occurs in response to which factor?
A. Increased preload
B. Increased afterload
C. Reduced stroke volume
D. Decreased systemic vascular resistance
Correct Answer: B
Rationale: Chronic hypertension increases afterload, prompting concentric left
ventricular hypertrophy as the heart compensates against increased resistance.
,Question 3
Which laboratory finding is most consistent with iron deficiency anemia?
A. Elevated ferritin
B. Decreased total iron-binding capacity
C. Microcytic, hypochromic red blood cells
D. Elevated reticulocyte count
Correct Answer: C
Rationale: Iron deficiency anemia is characterized by microcytic, hypochromic
erythrocytes due to impaired hemoglobin synthesis.
Question 4
A 40-year-old woman reports fatigue, weight gain, and cold intolerance. Which
additional finding is most consistent with her condition?
A. Exophthalmos
B. Elevated TSH level
C. Decreased LDL cholesterol
D. Hyperreflexia
Correct Answer: B
,Rationale: Primary hypothyroidism leads to decreased thyroid hormone levels and
a compensatory elevation in TSH.
Question 5
Which organism is the most common cause of uncomplicated urinary tract
infections in adult women?
A. Klebsiella pneumoniae
B. Enterococcus faecalis
C. Escherichia coli
D. Proteus mirabilis
Correct Answer: C
Rationale: E. Coli accounts for the majority of uncomplicated UTIs due to its
ability to adhere to uroepithelial cells.
Question 6
, A patient with type 2 diabetes has persistent hyperglycemia despite oral therapy.
Which mechanism best explains insulin resistance?
A. Autoimmune beta-cell destruction
B. Decreased hepatic gluconeogenesis
C. Impaired insulin receptor signaling
D. Increased insulin secretion
Correct Answer: C
Rationale: Insulin resistance occurs when peripheral tissues do not respond
adequately to insulin due to impaired receptor signaling.
Question 7
Which physical examination finding is most suggestive of heart failure with fluid
overload?
A. Narrow pulse pressure
B. Jugular venous distention
C. Bradycardia
D. Decreased respiratory rate
Correct Answer: B
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES GRADED A+ LATEST
Question 1
A 56-year-old male presents with exertional chest discomfort relieved by rest.
Which pathophysiologic mechanism most likely explains his symptoms?
A. Coronary artery vasospasm
B. Myocardial oxygen supply-demand mismatch
C. Acute plaque rupture with thrombosis
D. Ventricular remodeling
Correct Answer: B
Rationale: Stable angina results from a mismatch between myocardial oxygen
demand and supply, typically due to fixed coronary artery narrowing. Plaque
rupture is associated with acute coronary syndromes.
Question 2
A patient with long-standing hypertension develops left ventricular hypertrophy.
This adaptation primarily occurs in response to which factor?
A. Increased preload
B. Increased afterload
C. Reduced stroke volume
D. Decreased systemic vascular resistance
Correct Answer: B
Rationale: Chronic hypertension increases afterload, prompting concentric left
ventricular hypertrophy as the heart compensates against increased resistance.
,Question 3
Which laboratory finding is most consistent with iron deficiency anemia?
A. Elevated ferritin
B. Decreased total iron-binding capacity
C. Microcytic, hypochromic red blood cells
D. Elevated reticulocyte count
Correct Answer: C
Rationale: Iron deficiency anemia is characterized by microcytic, hypochromic
erythrocytes due to impaired hemoglobin synthesis.
Question 4
A 40-year-old woman reports fatigue, weight gain, and cold intolerance. Which
additional finding is most consistent with her condition?
A. Exophthalmos
B. Elevated TSH level
C. Decreased LDL cholesterol
D. Hyperreflexia
Correct Answer: B
,Rationale: Primary hypothyroidism leads to decreased thyroid hormone levels and
a compensatory elevation in TSH.
Question 5
Which organism is the most common cause of uncomplicated urinary tract
infections in adult women?
A. Klebsiella pneumoniae
B. Enterococcus faecalis
C. Escherichia coli
D. Proteus mirabilis
Correct Answer: C
Rationale: E. Coli accounts for the majority of uncomplicated UTIs due to its
ability to adhere to uroepithelial cells.
Question 6
, A patient with type 2 diabetes has persistent hyperglycemia despite oral therapy.
Which mechanism best explains insulin resistance?
A. Autoimmune beta-cell destruction
B. Decreased hepatic gluconeogenesis
C. Impaired insulin receptor signaling
D. Increased insulin secretion
Correct Answer: C
Rationale: Insulin resistance occurs when peripheral tissues do not respond
adequately to insulin due to impaired receptor signaling.
Question 7
Which physical examination finding is most suggestive of heart failure with fluid
overload?
A. Narrow pulse pressure
B. Jugular venous distention
C. Bradycardia
D. Decreased respiratory rate
Correct Answer: B
