National Council Licensure Nurses
(NCLEX-PN) Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. A nurse is caring for a client with diabetes mellitus who is experiencing
hypoglycemia. What is the first action?
A. Give 4 oz of orange juice
B. Administer insulin
C. Check blood pressure
D. Provide a full meal
Answer: A. Give 4 oz of orange juice
Rationale: The priority is to quickly raise blood glucose using a fast-
acting carbohydrate.
2. A client has a potassium level of 6.5 mEq/L. Which ECG finding is
expected?
A. U waves
, B. Peaked T waves
C. Prolonged QT interval
D. ST depression
Answer: B. Peaked T waves
Rationale: Hyperkalemia commonly causes tall, peaked T waves.
3. Which action is most important when administering insulin?
A. Shake vial vigorously
B. Inject at 45–90 degree angle
C. Massage injection site after administration
D. Mix long-acting insulin with short-acting insulin
Answer: B. Inject at 45–90 degree angle
Rationale: Proper injection angle ensures correct subcutaneous
delivery.
4. A nurse is assessing a client with asthma. Which finding indicates an
acute exacerbation?
A. Bradypnea
B. Wheezing
C. Bradycardia
D. Hypotension
Answer: B. Wheezing
Rationale: Wheezing indicates airway narrowing during asthma
attack.
,5. A postoperative client suddenly develops chest pain and dyspnea.
What is the priority action?
A. Encourage coughing
B. Apply oxygen
C. Raise head of bed
D. Obtain vital signs
Answer: B. Apply oxygen
Rationale: Oxygen is the priority to improve tissue perfusion in
suspected pulmonary embolism.
6. Which laboratory value indicates dehydration?
A. Low hematocrit
B. High sodium
C. Low potassium
D. Low calcium
Answer: B. High sodium
Rationale: Dehydration causes hemoconcentration leading to
hypernatremia.
7. A nurse is caring for a client with tuberculosis. Which isolation
precaution is required?
A. Contact
B. Droplet
C. Airborne
D. Protective
, Answer: C. Airborne
Rationale: TB spreads via airborne droplets requiring negative
pressure room.
8. Which symptom is most indicative of heart failure?
A. Dry skin
B. Peripheral edema
C. Bradycardia
D. Increased appetite
Answer: B. Peripheral edema
Rationale: Fluid retention leads to swelling in heart failure.
9. A client is receiving warfarin therapy. Which lab value should be
monitored?
A. aPTT
B. INR
C. Platelet count
D. Hemoglobin
Answer: B. INR
Rationale: INR evaluates therapeutic effect of warfarin.
10. Which position is best for a client experiencing respiratory
distress?
A. Supine
B. Trendelenburg
C. High Fowler’s
(NCLEX-PN) Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. A nurse is caring for a client with diabetes mellitus who is experiencing
hypoglycemia. What is the first action?
A. Give 4 oz of orange juice
B. Administer insulin
C. Check blood pressure
D. Provide a full meal
Answer: A. Give 4 oz of orange juice
Rationale: The priority is to quickly raise blood glucose using a fast-
acting carbohydrate.
2. A client has a potassium level of 6.5 mEq/L. Which ECG finding is
expected?
A. U waves
, B. Peaked T waves
C. Prolonged QT interval
D. ST depression
Answer: B. Peaked T waves
Rationale: Hyperkalemia commonly causes tall, peaked T waves.
3. Which action is most important when administering insulin?
A. Shake vial vigorously
B. Inject at 45–90 degree angle
C. Massage injection site after administration
D. Mix long-acting insulin with short-acting insulin
Answer: B. Inject at 45–90 degree angle
Rationale: Proper injection angle ensures correct subcutaneous
delivery.
4. A nurse is assessing a client with asthma. Which finding indicates an
acute exacerbation?
A. Bradypnea
B. Wheezing
C. Bradycardia
D. Hypotension
Answer: B. Wheezing
Rationale: Wheezing indicates airway narrowing during asthma
attack.
,5. A postoperative client suddenly develops chest pain and dyspnea.
What is the priority action?
A. Encourage coughing
B. Apply oxygen
C. Raise head of bed
D. Obtain vital signs
Answer: B. Apply oxygen
Rationale: Oxygen is the priority to improve tissue perfusion in
suspected pulmonary embolism.
6. Which laboratory value indicates dehydration?
A. Low hematocrit
B. High sodium
C. Low potassium
D. Low calcium
Answer: B. High sodium
Rationale: Dehydration causes hemoconcentration leading to
hypernatremia.
7. A nurse is caring for a client with tuberculosis. Which isolation
precaution is required?
A. Contact
B. Droplet
C. Airborne
D. Protective
, Answer: C. Airborne
Rationale: TB spreads via airborne droplets requiring negative
pressure room.
8. Which symptom is most indicative of heart failure?
A. Dry skin
B. Peripheral edema
C. Bradycardia
D. Increased appetite
Answer: B. Peripheral edema
Rationale: Fluid retention leads to swelling in heart failure.
9. A client is receiving warfarin therapy. Which lab value should be
monitored?
A. aPTT
B. INR
C. Platelet count
D. Hemoglobin
Answer: B. INR
Rationale: INR evaluates therapeutic effect of warfarin.
10. Which position is best for a client experiencing respiratory
distress?
A. Supine
B. Trendelenburg
C. High Fowler’s
