NURS 6501 ADVANCED PATHOPHYSIOLOGY
WALDEN UNIVERSITY
MIDTERM EXAM
QUESTIONS AND 100% VERIFIED ANSWERS WITH RATIONALES
GRADED A+
GUARANTEED PASS ON THE FIRST ATTEMPT
1.
A 55-year-old male presents with chronic fatigue, pallor, and shortness of breath
on exertion. Laboratory results reveal a hemoglobin of 8 g/dL, MCV of 70 fL, and
ferritin of 10 ng/mL. Which condition is most consistent with these findings?
A. Vitamin B12 deficiency anemia
B. Iron-deficiency anemia
C. Aplastic anemia
D. Hemolytic anemia
Answer: B. Iron-deficiency anemia
Rationale: Low hemoglobin with microcytosis (MCV <80 fL) and low ferritin
indicates iron-deficiency anemia, which is the most common cause of microcytic
anemia. Vitamin B12 deficiency causes macrocytosis, aplastic anemia presents
with pancytopenia, and hemolytic anemia typically shows elevated reticulocyte
count and indirect bilirubin.
,2.
A patient with chronic kidney disease (CKD) is experiencing worsening fatigue
and pallor. Which pathophysiologic mechanism best explains this finding?
A. Decreased erythropoietin production
B. Increased hemolysis
C. Impaired platelet aggregation
D. Autoimmune destruction of red blood cells
Answer: A. Decreased erythropoietin production
Rationale: CKD leads to decreased production of erythropoietin by the kidneys,
causing normocytic, normochromic anemia. Increased hemolysis and autoimmune
destruction are not the primary mechanisms in CKD.
3.
A patient presents with a persistent cough, hemoptysis, and weight loss. Imaging
shows a mass in the upper lobe of the right lung. Biopsy confirms squamous cell
carcinoma. Which paraneoplastic syndrome is most commonly associated with this
type of lung cancer?
A. Syndrome of inappropriate antidiuretic hormone (SIADH)
B. Hypercalcemia
C. Cushing syndrome
D. Lambert-Eaton myasthenic syndrome
Answer: B. Hypercalcemia
Rationale: Squamous cell carcinoma of the lung commonly secretes parathyroid
hormone-related peptide (PTHrP), causing hypercalcemia. SIADH is more
common with small cell lung carcinoma, Cushing syndrome can occur with small
cell carcinoma, and Lambert-Eaton is associated with small cell carcinoma as well.
,4.
A 30-year-old female presents with a butterfly-shaped rash on her face, joint pain,
and photosensitivity. Laboratory findings reveal positive ANA and anti-dsDNA
antibodies. What type of hypersensitivity reaction primarily contributes to her
condition?
A. Type I
B. Type II
C. Type III
D. Type IV
Answer: C. Type III
Rationale: Systemic lupus erythematosus (SLE) is primarily mediated by Type III
hypersensitivity reactions, where immune complex deposition triggers tissue
inflammation. Type I is immediate hypersensitivity (allergic), Type II involves
cytotoxic antibodies, and Type IV is delayed cell-mediated.
5.
A patient with cirrhosis develops ascites. Which pathophysiologic mechanism
most directly contributes to fluid accumulation in the peritoneal cavity?
A. Increased hepatic albumin synthesis
B. Portal hypertension and hypoalbuminemia
C. Excess aldosterone breakdown
D. Enhanced lymphatic drainage
Answer: B. Portal hypertension and hypoalbuminemia
Rationale: In cirrhosis, portal hypertension increases hydrostatic pressure, and
hypoalbuminemia reduces plasma oncotic pressure, leading to fluid accumulation
in the peritoneal cavity. The other options do not contribute to ascites formation.
, 6.
A 65-year-old male presents with crushing substernal chest pain radiating to the
left arm. ECG shows ST-segment elevation in leads II, III, and aVF. Which
coronary artery is most likely involved?
A. Left anterior descending artery
B. Left circumflex artery
C. Right coronary artery
D. Posterior descending artery
Answer: C. Right coronary artery
Rationale: ST elevation in leads II, III, and aVF corresponds to an inferior
myocardial infarction, usually due to occlusion of the right coronary artery.
7.
A patient presents with sudden onset of severe headache, neck stiffness, and
photophobia. CT scan is unremarkable. Lumbar puncture reveals xanthochromia.
What is the most likely diagnosis?
A. Migraine
B. Bacterial meningitis
C. Subarachnoid hemorrhage
D. Intracerebral hemorrhage
Answer: C. Subarachnoid hemorrhage
Rationale: Xanthochromia in CSF is indicative of subarachnoid hemorrhage. CT
scan may be normal if performed after several hours. Meningitis usually shows
pleocytosis and low glucose, and intracerebral hemorrhage presents with focal
neurologic deficits.
WALDEN UNIVERSITY
MIDTERM EXAM
QUESTIONS AND 100% VERIFIED ANSWERS WITH RATIONALES
GRADED A+
GUARANTEED PASS ON THE FIRST ATTEMPT
1.
A 55-year-old male presents with chronic fatigue, pallor, and shortness of breath
on exertion. Laboratory results reveal a hemoglobin of 8 g/dL, MCV of 70 fL, and
ferritin of 10 ng/mL. Which condition is most consistent with these findings?
A. Vitamin B12 deficiency anemia
B. Iron-deficiency anemia
C. Aplastic anemia
D. Hemolytic anemia
Answer: B. Iron-deficiency anemia
Rationale: Low hemoglobin with microcytosis (MCV <80 fL) and low ferritin
indicates iron-deficiency anemia, which is the most common cause of microcytic
anemia. Vitamin B12 deficiency causes macrocytosis, aplastic anemia presents
with pancytopenia, and hemolytic anemia typically shows elevated reticulocyte
count and indirect bilirubin.
,2.
A patient with chronic kidney disease (CKD) is experiencing worsening fatigue
and pallor. Which pathophysiologic mechanism best explains this finding?
A. Decreased erythropoietin production
B. Increased hemolysis
C. Impaired platelet aggregation
D. Autoimmune destruction of red blood cells
Answer: A. Decreased erythropoietin production
Rationale: CKD leads to decreased production of erythropoietin by the kidneys,
causing normocytic, normochromic anemia. Increased hemolysis and autoimmune
destruction are not the primary mechanisms in CKD.
3.
A patient presents with a persistent cough, hemoptysis, and weight loss. Imaging
shows a mass in the upper lobe of the right lung. Biopsy confirms squamous cell
carcinoma. Which paraneoplastic syndrome is most commonly associated with this
type of lung cancer?
A. Syndrome of inappropriate antidiuretic hormone (SIADH)
B. Hypercalcemia
C. Cushing syndrome
D. Lambert-Eaton myasthenic syndrome
Answer: B. Hypercalcemia
Rationale: Squamous cell carcinoma of the lung commonly secretes parathyroid
hormone-related peptide (PTHrP), causing hypercalcemia. SIADH is more
common with small cell lung carcinoma, Cushing syndrome can occur with small
cell carcinoma, and Lambert-Eaton is associated with small cell carcinoma as well.
,4.
A 30-year-old female presents with a butterfly-shaped rash on her face, joint pain,
and photosensitivity. Laboratory findings reveal positive ANA and anti-dsDNA
antibodies. What type of hypersensitivity reaction primarily contributes to her
condition?
A. Type I
B. Type II
C. Type III
D. Type IV
Answer: C. Type III
Rationale: Systemic lupus erythematosus (SLE) is primarily mediated by Type III
hypersensitivity reactions, where immune complex deposition triggers tissue
inflammation. Type I is immediate hypersensitivity (allergic), Type II involves
cytotoxic antibodies, and Type IV is delayed cell-mediated.
5.
A patient with cirrhosis develops ascites. Which pathophysiologic mechanism
most directly contributes to fluid accumulation in the peritoneal cavity?
A. Increased hepatic albumin synthesis
B. Portal hypertension and hypoalbuminemia
C. Excess aldosterone breakdown
D. Enhanced lymphatic drainage
Answer: B. Portal hypertension and hypoalbuminemia
Rationale: In cirrhosis, portal hypertension increases hydrostatic pressure, and
hypoalbuminemia reduces plasma oncotic pressure, leading to fluid accumulation
in the peritoneal cavity. The other options do not contribute to ascites formation.
, 6.
A 65-year-old male presents with crushing substernal chest pain radiating to the
left arm. ECG shows ST-segment elevation in leads II, III, and aVF. Which
coronary artery is most likely involved?
A. Left anterior descending artery
B. Left circumflex artery
C. Right coronary artery
D. Posterior descending artery
Answer: C. Right coronary artery
Rationale: ST elevation in leads II, III, and aVF corresponds to an inferior
myocardial infarction, usually due to occlusion of the right coronary artery.
7.
A patient presents with sudden onset of severe headache, neck stiffness, and
photophobia. CT scan is unremarkable. Lumbar puncture reveals xanthochromia.
What is the most likely diagnosis?
A. Migraine
B. Bacterial meningitis
C. Subarachnoid hemorrhage
D. Intracerebral hemorrhage
Answer: C. Subarachnoid hemorrhage
Rationale: Xanthochromia in CSF is indicative of subarachnoid hemorrhage. CT
scan may be normal if performed after several hours. Meningitis usually shows
pleocytosis and low glucose, and intracerebral hemorrhage presents with focal
neurologic deficits.
