NR 283 Pathophysiology Exam 3: (Latest 2026/2027 Update) Pulmonary,
Anemia, Endocrine, Musculoskeletal, Spinal Cord Injury | Q&A | Grade A |
100% Correct (Verified Answers)
COMPREHENSIVE REVIEW | LATEST 2026/2027
SUBJECT SOURCE FORMAT
Pathophysiology NR 283 Exam 3 2026/2027 Q&A with Clinical Rationale
1
A nurse is teaching a group of students about gas exchange at the cellular level. Which statement by a
student indicates correct understanding?
A. Gas exchange occurs as long as oxygen enters the nose. B. Ventilation must occur for oxygen to move
into the blood and carbon dioxide to move out. C. Carbon dioxide moves into the blood during
inhalation. D. The primary purpose of ventilation is to regulate blood pressure.
CORRECT ANSWER: B. Ventilation must occur for oxygen to move into the blood and carbon dioxide to
move out.
CLINICAL RATIONALE
1. Ventilation is the mechanical movement of air, essential for maintaining concentration gradients for gas exchange.
2
Which best describes the way oxygen and carbon dioxide move between the alveoli and capillaries?
A. Gases move from a low pressure and concentration to a high pressure and concentration. B. Gases
move from a high pressure and concentration to a high pressure and concentration. C. There is no
pressure or concentration gradient present in the lungs. D. Gases move from a high pressure and
concentration to a low pressure and concentration.
CORRECT ANSWER: D. Gases move from a high pressure and concentration to a low pressure and
concentration.
CLINICAL RATIONALE
1. Diffusion follows the concentration gradient: oxygen moves from alveoli (high) to capillary blood (low).
, 3
A nurse is reviewing gas exchange with a pathophysiology student. Which statement demonstrates correct
understanding of how gases are transported in the body?
A. Hemoglobin carries carbon dioxide from the cells to the alveoli and exchanges it for oxygen. B. Oxygen
is transported in the blood primarily dissolved in plasma. C. Gas exchange occurs only in the lungs. D.
Carbon dioxide is inhaled into the alveoli and delivered to the cells.
CORRECT ANSWER: A. Hemoglobin carries carbon dioxide from the cells to the alveoli and exchanges it for
oxygen.
CLINICAL RATIONALE
1. Hemoglobin transports O2 to tissues and returns CO2 to lungs via the Haldane effect.
4
A nurse is reviewing causes of impaired gas exchange with a pathophysiology student. Which conditions
can directly impair gas exchange? Select all that apply.
A. Pulmonary embolism B. Anemia C. Asthma D. Spinal cord injury E. Hypertension
CORRECT ANSWER: A, B, C, D
CLINICAL RATIONALE
1. PE blocks blood flow; anemia reduces O2-carrying capacity; asthma causes airway obstruction; SCI impairs
respiratory muscles.
5
Which clinical manifestations may indicate cerebral cellular hypoxia? Select all that apply.
A. Weakness B. Lethargy C. Anemia D. Increased respirations E. Confusion
CORRECT ANSWER: A, B, D, E
CLINICAL RATIONALE
1. Brain hypoxia causes weakness, lethargy, confusion; increased respirations compensate for low O2.
6
A client with impaired gas exchange reports new symptoms. Which assessment finding most strongly
suggests myocardial hypoxia?
A. Increased urine output B. Dry mucous membranes C. Chest pain radiating to the jaw D. Hyperactive
bowel sounds
CORRECT ANSWER: C. Chest pain radiating to the jaw
CLINICAL RATIONALE
1. Myocardial ischemia causes angina pectoris, often radiating to jaw, neck, or left arm.
, 7
A nurse is monitoring a client with chronic altered gas exchange. Which finding is most consistent with
renal hypoxia?
A. Weight gain from fluid retention B. Decreased heart rate C. Dilated pupils D. Productive cough
CORRECT ANSWER: A. Weight gain from fluid retention
CLINICAL RATIONALE
1. Renal hypoxia causes decreased GFR leading to fluid retention and weight gain.
8
A nurse is teaching a community health class about risk factors that can impair gas exchange. Which factors
increase the risk of altered gas exchange? Select all that apply.
A. Living at high altitude B. Smoking cigarettes C. Exposure to air pollution D. Low dietary iron intake E.
Drinking adequate amounts of water
CORRECT ANSWER: A, B, C, D
CLINICAL RATIONALE
1. High altitude lowers O2 availability; smoking/pollution damage airways; low iron causes anemia.
9
A nurse is preparing a client for spirometry testing. What is the primary purpose of this test?
A. Measure oxygen saturation levels B. Evaluate pulmonary volumes and airflow C. Identify respiratory
pathogens D. Measure blood pH levels
CORRECT ANSWER: B. Evaluate pulmonary volumes and airflow
CLINICAL RATIONALE
1. Spirometry measures FVC, FEV1, and FEV1/FVC ratio to diagnose obstructive/restrictive lung disease.
10
A provider orders an arterial blood gas (ABG). Which values does this test evaluate?
A. Hemoglobin and hematocrit B. Sodium and potassium C. Oxygen, carbon dioxide, bicarbonate, and pH
D. White blood cell count
CORRECT ANSWER: C. Oxygen, carbon dioxide, bicarbonate, and pH
CLINICAL RATIONALE
1. ABG measures PaO2, PaCO2, HCO3, pH, and SaO2 to assess oxygenation and acid-base status.
Anemia, Endocrine, Musculoskeletal, Spinal Cord Injury | Q&A | Grade A |
100% Correct (Verified Answers)
COMPREHENSIVE REVIEW | LATEST 2026/2027
SUBJECT SOURCE FORMAT
Pathophysiology NR 283 Exam 3 2026/2027 Q&A with Clinical Rationale
1
A nurse is teaching a group of students about gas exchange at the cellular level. Which statement by a
student indicates correct understanding?
A. Gas exchange occurs as long as oxygen enters the nose. B. Ventilation must occur for oxygen to move
into the blood and carbon dioxide to move out. C. Carbon dioxide moves into the blood during
inhalation. D. The primary purpose of ventilation is to regulate blood pressure.
CORRECT ANSWER: B. Ventilation must occur for oxygen to move into the blood and carbon dioxide to
move out.
CLINICAL RATIONALE
1. Ventilation is the mechanical movement of air, essential for maintaining concentration gradients for gas exchange.
2
Which best describes the way oxygen and carbon dioxide move between the alveoli and capillaries?
A. Gases move from a low pressure and concentration to a high pressure and concentration. B. Gases
move from a high pressure and concentration to a high pressure and concentration. C. There is no
pressure or concentration gradient present in the lungs. D. Gases move from a high pressure and
concentration to a low pressure and concentration.
CORRECT ANSWER: D. Gases move from a high pressure and concentration to a low pressure and
concentration.
CLINICAL RATIONALE
1. Diffusion follows the concentration gradient: oxygen moves from alveoli (high) to capillary blood (low).
, 3
A nurse is reviewing gas exchange with a pathophysiology student. Which statement demonstrates correct
understanding of how gases are transported in the body?
A. Hemoglobin carries carbon dioxide from the cells to the alveoli and exchanges it for oxygen. B. Oxygen
is transported in the blood primarily dissolved in plasma. C. Gas exchange occurs only in the lungs. D.
Carbon dioxide is inhaled into the alveoli and delivered to the cells.
CORRECT ANSWER: A. Hemoglobin carries carbon dioxide from the cells to the alveoli and exchanges it for
oxygen.
CLINICAL RATIONALE
1. Hemoglobin transports O2 to tissues and returns CO2 to lungs via the Haldane effect.
4
A nurse is reviewing causes of impaired gas exchange with a pathophysiology student. Which conditions
can directly impair gas exchange? Select all that apply.
A. Pulmonary embolism B. Anemia C. Asthma D. Spinal cord injury E. Hypertension
CORRECT ANSWER: A, B, C, D
CLINICAL RATIONALE
1. PE blocks blood flow; anemia reduces O2-carrying capacity; asthma causes airway obstruction; SCI impairs
respiratory muscles.
5
Which clinical manifestations may indicate cerebral cellular hypoxia? Select all that apply.
A. Weakness B. Lethargy C. Anemia D. Increased respirations E. Confusion
CORRECT ANSWER: A, B, D, E
CLINICAL RATIONALE
1. Brain hypoxia causes weakness, lethargy, confusion; increased respirations compensate for low O2.
6
A client with impaired gas exchange reports new symptoms. Which assessment finding most strongly
suggests myocardial hypoxia?
A. Increased urine output B. Dry mucous membranes C. Chest pain radiating to the jaw D. Hyperactive
bowel sounds
CORRECT ANSWER: C. Chest pain radiating to the jaw
CLINICAL RATIONALE
1. Myocardial ischemia causes angina pectoris, often radiating to jaw, neck, or left arm.
, 7
A nurse is monitoring a client with chronic altered gas exchange. Which finding is most consistent with
renal hypoxia?
A. Weight gain from fluid retention B. Decreased heart rate C. Dilated pupils D. Productive cough
CORRECT ANSWER: A. Weight gain from fluid retention
CLINICAL RATIONALE
1. Renal hypoxia causes decreased GFR leading to fluid retention and weight gain.
8
A nurse is teaching a community health class about risk factors that can impair gas exchange. Which factors
increase the risk of altered gas exchange? Select all that apply.
A. Living at high altitude B. Smoking cigarettes C. Exposure to air pollution D. Low dietary iron intake E.
Drinking adequate amounts of water
CORRECT ANSWER: A, B, C, D
CLINICAL RATIONALE
1. High altitude lowers O2 availability; smoking/pollution damage airways; low iron causes anemia.
9
A nurse is preparing a client for spirometry testing. What is the primary purpose of this test?
A. Measure oxygen saturation levels B. Evaluate pulmonary volumes and airflow C. Identify respiratory
pathogens D. Measure blood pH levels
CORRECT ANSWER: B. Evaluate pulmonary volumes and airflow
CLINICAL RATIONALE
1. Spirometry measures FVC, FEV1, and FEV1/FVC ratio to diagnose obstructive/restrictive lung disease.
10
A provider orders an arterial blood gas (ABG). Which values does this test evaluate?
A. Hemoglobin and hematocrit B. Sodium and potassium C. Oxygen, carbon dioxide, bicarbonate, and pH
D. White blood cell count
CORRECT ANSWER: C. Oxygen, carbon dioxide, bicarbonate, and pH
CLINICAL RATIONALE
1. ABG measures PaO2, PaCO2, HCO3, pH, and SaO2 to assess oxygenation and acid-base status.
