NSG 100 Exam 3 – Nursing Concepts 2026 UPDATE 2026 Update • Verified Answers
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
NSG 100 Exam 3 – Nursing Concepts 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,NSG 100 Exam 3 – Nursing Concepts 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. A nurse is caring for a patient who has a potassium level of 3.2 mEq/L. Which clinical
manifestation should the nurse expect to observe?
A. Hyperactive bowel sounds
B. Peaked T waves on ECG
C. Muscle weakness and leg cramps
D. Increased deep tendon reflexes
Answer: C
Rationale: Hypokalemia (potassium < 3.5 mEq/L) often presents with muscle weakness, leg cramps, fatigue,
and cardiac arrhythmias. Recognizing this principle allows the nurse to prioritize care, anticipate complications,
and provide accurate patient education. Exam questions often test the ability to distinguish this concept from
closely related distractors, making a clear rationale essential for mastery.
2. When assessing a patient’s pressure injury, the nurse notes partial-thickness loss of dermis
presenting as a shallow open ulcer with a red-pink wound bed. How should the nurse stage this
injury?
A. Stage I
B. Stage II
C. Stage III
D. Stage IV
Answer: B
Rationale: Stage II pressure injuries involve partial-thickness loss of dermis, appearing as a shallow open ulcer
or a serum-filled blister. Recognizing this principle allows the nurse to prioritize care, anticipate complications,
and provide accurate patient education. Exam questions often test the ability to distinguish this concept from
closely related distractors, making a clear rationale essential for mastery.
3. A nurse is preparing to administer an enteral feeding via a nasogastric tube. What is the
priority nursing action before starting the infusion?
A. Check the gastric residual volume
B. Warm the formula to body temperature
C. Verify the placement of the tube by X-ray or pH testing
D. Flush the tube with 30 mL of air
Answer: C
Rationale: Verifying tube placement is the most critical step to prevent aspiration into the lungs. Recognizing
this principle allows the nurse to prioritize care, anticipate complications, and provide accurate patient
education. Exam questions often test the ability to distinguish this concept from closely related distractors,
making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, NSG 100 Exam 3 – Nursing Concepts 2026 UPDATE 2026 Update • Verified Answers
4. A patient is diagnosed with respiratory acidosis. Which of the following ABG results is
consistent with this diagnosis?
A. pH 7.32, HCO3 18 mEq/L
B. pH 7.50, PaCO2 30 mm Hg
C. pH 7.30, PaCO2 50 mm Hg
D. pH 7.48, HCO3 30 mEq/L
Answer: C
Rationale: Respiratory acidosis is characterized by a low pH (<7.35) and an elevated PaCO2 (>45 mm Hg).
This is an important clinical concept because selecting the correct answer (C) requires understanding both the
pathophysiology and the practical nursing implications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education.
5. The nurse is assessing a patient for hypoxia. Which of the following is considered a late sign
of hypoxia?
A. Restlessness
B. Tachycardia
C. Apprehension
D. Cyanosis
Answer: D
Rationale: Restlessness and tachycardia are early signs, while cyanosis (blue discoloration of skin/mucosa) is
a late sign of respiratory distress. Applying this knowledge in clinical settings supports safe, evidence-based
practice and improves patient outcomes. This is an important clinical concept because selecting the correct
answer (D) requires understanding both the pathophysiology and the practical nursing implications.
6. A patient has a large surgical wound healing by secondary intention. The nurse should
explain that this means:
A. The wound is left open to fill with scar tissue.
B. The wound edges are approximated with sutures.
C. The wound is closed after several days of drainage.
D. Healing will occur very rapidly with minimal scarring.
Answer: A
Rationale: Secondary intention occurs when wound edges are not approximated and the wound fills with
granulation tissue. Applying this knowledge in clinical settings supports safe, evidence-based practice and
improves patient outcomes. This is an important clinical concept because selecting the correct answer (A)
requires understanding both the pathophysiology and the practical nursing implications.
Exam (Elaborations) • Actual Questions & Rationales Page 3
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
NSG 100 Exam 3 – Nursing Concepts 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,NSG 100 Exam 3 – Nursing Concepts 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. A nurse is caring for a patient who has a potassium level of 3.2 mEq/L. Which clinical
manifestation should the nurse expect to observe?
A. Hyperactive bowel sounds
B. Peaked T waves on ECG
C. Muscle weakness and leg cramps
D. Increased deep tendon reflexes
Answer: C
Rationale: Hypokalemia (potassium < 3.5 mEq/L) often presents with muscle weakness, leg cramps, fatigue,
and cardiac arrhythmias. Recognizing this principle allows the nurse to prioritize care, anticipate complications,
and provide accurate patient education. Exam questions often test the ability to distinguish this concept from
closely related distractors, making a clear rationale essential for mastery.
2. When assessing a patient’s pressure injury, the nurse notes partial-thickness loss of dermis
presenting as a shallow open ulcer with a red-pink wound bed. How should the nurse stage this
injury?
A. Stage I
B. Stage II
C. Stage III
D. Stage IV
Answer: B
Rationale: Stage II pressure injuries involve partial-thickness loss of dermis, appearing as a shallow open ulcer
or a serum-filled blister. Recognizing this principle allows the nurse to prioritize care, anticipate complications,
and provide accurate patient education. Exam questions often test the ability to distinguish this concept from
closely related distractors, making a clear rationale essential for mastery.
3. A nurse is preparing to administer an enteral feeding via a nasogastric tube. What is the
priority nursing action before starting the infusion?
A. Check the gastric residual volume
B. Warm the formula to body temperature
C. Verify the placement of the tube by X-ray or pH testing
D. Flush the tube with 30 mL of air
Answer: C
Rationale: Verifying tube placement is the most critical step to prevent aspiration into the lungs. Recognizing
this principle allows the nurse to prioritize care, anticipate complications, and provide accurate patient
education. Exam questions often test the ability to distinguish this concept from closely related distractors,
making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, NSG 100 Exam 3 – Nursing Concepts 2026 UPDATE 2026 Update • Verified Answers
4. A patient is diagnosed with respiratory acidosis. Which of the following ABG results is
consistent with this diagnosis?
A. pH 7.32, HCO3 18 mEq/L
B. pH 7.50, PaCO2 30 mm Hg
C. pH 7.30, PaCO2 50 mm Hg
D. pH 7.48, HCO3 30 mEq/L
Answer: C
Rationale: Respiratory acidosis is characterized by a low pH (<7.35) and an elevated PaCO2 (>45 mm Hg).
This is an important clinical concept because selecting the correct answer (C) requires understanding both the
pathophysiology and the practical nursing implications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education.
5. The nurse is assessing a patient for hypoxia. Which of the following is considered a late sign
of hypoxia?
A. Restlessness
B. Tachycardia
C. Apprehension
D. Cyanosis
Answer: D
Rationale: Restlessness and tachycardia are early signs, while cyanosis (blue discoloration of skin/mucosa) is
a late sign of respiratory distress. Applying this knowledge in clinical settings supports safe, evidence-based
practice and improves patient outcomes. This is an important clinical concept because selecting the correct
answer (D) requires understanding both the pathophysiology and the practical nursing implications.
6. A patient has a large surgical wound healing by secondary intention. The nurse should
explain that this means:
A. The wound is left open to fill with scar tissue.
B. The wound edges are approximated with sutures.
C. The wound is closed after several days of drainage.
D. Healing will occur very rapidly with minimal scarring.
Answer: A
Rationale: Secondary intention occurs when wound edges are not approximated and the wound fills with
granulation tissue. Applying this knowledge in clinical settings supports safe, evidence-based practice and
improves patient outcomes. This is an important clinical concept because selecting the correct answer (A)
requires understanding both the pathophysiology and the practical nursing implications.
Exam (Elaborations) • Actual Questions & Rationales Page 3
