NR 224 Fundamentals of Nursing Exam 3 Practice 2026 |Chamberlain
College
1. A nurse is assessing a client who has a suspected diagnosis of hypoxia. Which
of the following is a late clinical manifestation of hypoxia?
A. Restlessness
B. Tachycardia
C. Cyanosis
D. Elevated blood pressure
Answer: C
Rationale: Cyanosis is a late sign of hypoxia; early signs include restlessness, tachycardia,
and elevated blood pressure.
2. When performing oropharyngeal suctioning for a client, which action should
the nurse take?
A. Apply suction while inserting the catheter
B. Suction for 30 seconds at a time
C. Apply suction only while withdrawing the catheter
D. Use clean gloves for the entire procedure
Answer: C
Rationale: Suction should only be applied while withdrawing the catheter to prevent
tissue damage and hypoxia.
,3. A nurse is caring for a client with a nasal cannula. Which of the following is
the maximum recommended flow rate for this device?
A. 2 L/min
B. 6 L/min
C. 4 L/min
D. 10 L/min
Answer: B
Rationale: A nasal cannula is typically used for flow rates of 1 to 6 L/min; higher rates can
dry out the mucosa.
4. A client is using an incentive spirometer. Which instruction should the nurse
provide?
A. Inhale slowly and deeply through the mouthpiece
B. Exhale forcefully into the device
C. Use the device once every 4 hours
D. Hold your breath for 30 seconds after inhalation
Answer: A
Rationale: Incentive spirometry requires the client to inhale slowly to expand the lungs
and prevent atelectasis.
5. A nurse is interpreting ABG results: pH 7.30, PaCO2 52 mmHg, and HCO3 26
mEq/L. What is the interpretation?
A. Metabolic Acidosis
B. Respiratory Alkalosis
C. Metabolic Alkalosis
D. Respiratory Acidosis
Answer: D
Rationale: A low pH (<7.35) combined with a high PaCO2 (>45) indicates respiratory
acidosis.
, 6. Which oxygen delivery device provides the most precise concentration of
oxygen?
A. Simple face mask
B. Non-rebreather mask
C. Venturi mask
D. Nasal cannula
Answer: C
Rationale: The Venturi mask uses different sized adapters to deliver a specific and precise
FiO2.
7. A nurse is assessing a client for fluid volume deficit. Which finding should the
nurse expect?
A. Distended neck veins
B. Bounding pulse
C. Peripheral edema
D. Poor skin turgor
Answer: D
Rationale: Fluid volume deficit (dehydration) results in decreased skin turgor, dry mucous
membranes, and weak pulses.
8. Which electrolyte imbalance is associated with a positive Chvostek’s sign?
A. Hyperkalemia
B. Hypocalcemia
C. Hyponatremia
D. Hypermagnesemia
Answer: B
Rationale: Chvostek’s sign (facial twitching) is a classic indicator of hypocalcemia.
College
1. A nurse is assessing a client who has a suspected diagnosis of hypoxia. Which
of the following is a late clinical manifestation of hypoxia?
A. Restlessness
B. Tachycardia
C. Cyanosis
D. Elevated blood pressure
Answer: C
Rationale: Cyanosis is a late sign of hypoxia; early signs include restlessness, tachycardia,
and elevated blood pressure.
2. When performing oropharyngeal suctioning for a client, which action should
the nurse take?
A. Apply suction while inserting the catheter
B. Suction for 30 seconds at a time
C. Apply suction only while withdrawing the catheter
D. Use clean gloves for the entire procedure
Answer: C
Rationale: Suction should only be applied while withdrawing the catheter to prevent
tissue damage and hypoxia.
,3. A nurse is caring for a client with a nasal cannula. Which of the following is
the maximum recommended flow rate for this device?
A. 2 L/min
B. 6 L/min
C. 4 L/min
D. 10 L/min
Answer: B
Rationale: A nasal cannula is typically used for flow rates of 1 to 6 L/min; higher rates can
dry out the mucosa.
4. A client is using an incentive spirometer. Which instruction should the nurse
provide?
A. Inhale slowly and deeply through the mouthpiece
B. Exhale forcefully into the device
C. Use the device once every 4 hours
D. Hold your breath for 30 seconds after inhalation
Answer: A
Rationale: Incentive spirometry requires the client to inhale slowly to expand the lungs
and prevent atelectasis.
5. A nurse is interpreting ABG results: pH 7.30, PaCO2 52 mmHg, and HCO3 26
mEq/L. What is the interpretation?
A. Metabolic Acidosis
B. Respiratory Alkalosis
C. Metabolic Alkalosis
D. Respiratory Acidosis
Answer: D
Rationale: A low pH (<7.35) combined with a high PaCO2 (>45) indicates respiratory
acidosis.
, 6. Which oxygen delivery device provides the most precise concentration of
oxygen?
A. Simple face mask
B. Non-rebreather mask
C. Venturi mask
D. Nasal cannula
Answer: C
Rationale: The Venturi mask uses different sized adapters to deliver a specific and precise
FiO2.
7. A nurse is assessing a client for fluid volume deficit. Which finding should the
nurse expect?
A. Distended neck veins
B. Bounding pulse
C. Peripheral edema
D. Poor skin turgor
Answer: D
Rationale: Fluid volume deficit (dehydration) results in decreased skin turgor, dry mucous
membranes, and weak pulses.
8. Which electrolyte imbalance is associated with a positive Chvostek’s sign?
A. Hyperkalemia
B. Hypocalcemia
C. Hyponatremia
D. Hypermagnesemia
Answer: B
Rationale: Chvostek’s sign (facial twitching) is a classic indicator of hypocalcemia.
