2026/2027
NUR 155 Exam 2 Detailed Study
Companion with Practice Exams,
Key Nursing Topics, and Test
Preparation 2026/2027
Question 1: Pressure Ulcer Risk Factors
A nurse is assessing a hospitalized patient for risk of pressure ulcer development.
Which of the following conditions places the patient at the highest risk?
A. Regular physical activity and balanced diet
B. Immobility and urinary incontinence
C. Young age and normal hydration
D. Controlled blood pressure and mobility
Correct Answer: B. Immobility and urinary incontinence
Rationale: Pressure ulcers develop when prolonged pressure reduces blood flow to
tissues. Immobility prevents repositioning, increasing sustained pressure over bony
prominences, while urinary incontinence causes moisture-associated skin damage that
weakens skin integrity. Together, these two factors significantly increase ulcer risk.
The other options describe protective or low-risk conditions such as mobility, youth,
and normal hydration.
Question 2: Gastric pH
What is the normal pH range of gastric contents?
A. 7–8
B. 5–6
C. 2–4
D. 9–10
Correct Answer: C. 2–4
Rationale: Gastric secretions are highly acidic due to hydrochloric acid, with a normal
pH of 2–4. This acidic environment aids digestion and protects against pathogens. The
other options represent neutral or alkaline environments, which are not consistent with
normal stomach physiology.
,2026/2027
Question 3: Sleep Promotion
Which intervention best promotes sleep in hospitalized patients?
A. Increasing nighttime fluid intake
B. Bright lighting and stimulation
C. Reducing noise and dimming lights
D. Encouraging evening exercise
Correct Answer: C. Reducing noise and dimming lights
Rationale: Sleep is supported by minimizing environmental stimulation. Lowering
noise and light promotes melatonin release and supports circadian rhythm regulation.
Increased fluids or stimulation disrupt sleep, and exercise late in the day may delay
sleep onset.
Question 4: Braden Scale
What is the primary purpose of the Braden Scale?
A. Assess pain level
B. Predict fall risk
C. Identify pressure ulcer risk
D. Evaluate cognitive status
Correct Answer: C. Identify pressure ulcer risk
Rationale: The Braden Scale evaluates risk for pressure injuries based on sensory
perception, moisture, activity, mobility, nutrition, and friction/shear. It is specifically
designed for pressure ulcer prevention, not pain, falls, or cognition.
Question 5: NG Tube Placement
Which is the most reliable method to confirm NG tube placement?
A. Air auscultation (“whoosh test”)
B. Checking external tube length
C. X-ray confirmation
D. Observing patient comfort
Correct Answer: C. X-ray confirmation
Rationale: Radiographic confirmation is the gold standard for NG tube placement.
Other methods like air auscultation or external measurement are unreliable and may
lead to misplacement and aspiration risk.
,2026/2027
Question 6: Pressure Injury Stage 2
A patient has partial-thickness skin loss with serous drainage. What stage is this
pressure injury?
A. Stage 1
B. Stage 2
C. Stage 3
D. Stage 4
Correct Answer: B. Stage 2
Rationale: Stage 2 pressure injuries involve partial-thickness skin loss with exposed
dermis and may include serous drainage. Stage 1 has intact skin, while stages 3 and 4
involve full-thickness tissue damage.
Question 7: Medication Safety
What is the most important nursing action before medication administration?
A. Ask family for approval
B. Check patient identity and medication order
C. Skip allergy check if routine medication
D. Administer quickly to avoid delay
Correct Answer: B. Check patient identity and medication order
Rationale: Safe medication administration requires verification of patient identity,
correct drug, dose, route, and time. Skipping allergy checks or relying on family input
increases risk of medication error.
Question 8: Opioid Side Effect
A patient receiving oxycodone becomes drowsy with slow breathing. What
complication is suspected?
A. Hypertension
B. Respiratory depression
C. Hyperglycemia
D. Infection
Correct Answer: B. Respiratory depression
Rationale: Opioids suppress the central nervous system, which can lead to respiratory
depression—a life-threatening complication. The other options are unrelated to opioid
toxicity.
, 2026/2027
Question 9: NG Tube Feeding Position
What is the correct position for a patient receiving NG tube feeding?
A. Supine
B. Trendelenburg
C. High Fowler’s
D. Prone
Correct Answer: C. High Fowler’s
Rationale: High Fowler’s position reduces aspiration risk by allowing gravity-assisted
gastric emptying. Supine or Trendelenburg positions significantly increase aspiration
risk.
Question 10: NG Medication Administration
What is the correct sequence for administering medications via NG tube?
A. Flush → meds → flush
B. Check placement → residual → flush → meds → flush
C. Meds → flush → placement
D. All meds together without flushing
Correct Answer: B. Check placement → residual → flush → meds → flush
Rationale: Proper NG administration requires confirming placement, checking
residual, flushing to ensure patency, administering medications separately, and
flushing again to prevent clogging and drug interactions.
Question 11: Enteric-Coated Medication
Which medication should NOT be crushed?
A. Liquid medication
B. Immediate-release tablet
C. Enteric-coated tablet
D. Chewable tablet
Correct Answer: C. Enteric-coated tablet
Rationale: Enteric-coated tablets are designed to dissolve in the intestines. Crushing
them destroys the coating, altering drug absorption and increasing gastric irritation
risk.
NUR 155 Exam 2 Detailed Study
Companion with Practice Exams,
Key Nursing Topics, and Test
Preparation 2026/2027
Question 1: Pressure Ulcer Risk Factors
A nurse is assessing a hospitalized patient for risk of pressure ulcer development.
Which of the following conditions places the patient at the highest risk?
A. Regular physical activity and balanced diet
B. Immobility and urinary incontinence
C. Young age and normal hydration
D. Controlled blood pressure and mobility
Correct Answer: B. Immobility and urinary incontinence
Rationale: Pressure ulcers develop when prolonged pressure reduces blood flow to
tissues. Immobility prevents repositioning, increasing sustained pressure over bony
prominences, while urinary incontinence causes moisture-associated skin damage that
weakens skin integrity. Together, these two factors significantly increase ulcer risk.
The other options describe protective or low-risk conditions such as mobility, youth,
and normal hydration.
Question 2: Gastric pH
What is the normal pH range of gastric contents?
A. 7–8
B. 5–6
C. 2–4
D. 9–10
Correct Answer: C. 2–4
Rationale: Gastric secretions are highly acidic due to hydrochloric acid, with a normal
pH of 2–4. This acidic environment aids digestion and protects against pathogens. The
other options represent neutral or alkaline environments, which are not consistent with
normal stomach physiology.
,2026/2027
Question 3: Sleep Promotion
Which intervention best promotes sleep in hospitalized patients?
A. Increasing nighttime fluid intake
B. Bright lighting and stimulation
C. Reducing noise and dimming lights
D. Encouraging evening exercise
Correct Answer: C. Reducing noise and dimming lights
Rationale: Sleep is supported by minimizing environmental stimulation. Lowering
noise and light promotes melatonin release and supports circadian rhythm regulation.
Increased fluids or stimulation disrupt sleep, and exercise late in the day may delay
sleep onset.
Question 4: Braden Scale
What is the primary purpose of the Braden Scale?
A. Assess pain level
B. Predict fall risk
C. Identify pressure ulcer risk
D. Evaluate cognitive status
Correct Answer: C. Identify pressure ulcer risk
Rationale: The Braden Scale evaluates risk for pressure injuries based on sensory
perception, moisture, activity, mobility, nutrition, and friction/shear. It is specifically
designed for pressure ulcer prevention, not pain, falls, or cognition.
Question 5: NG Tube Placement
Which is the most reliable method to confirm NG tube placement?
A. Air auscultation (“whoosh test”)
B. Checking external tube length
C. X-ray confirmation
D. Observing patient comfort
Correct Answer: C. X-ray confirmation
Rationale: Radiographic confirmation is the gold standard for NG tube placement.
Other methods like air auscultation or external measurement are unreliable and may
lead to misplacement and aspiration risk.
,2026/2027
Question 6: Pressure Injury Stage 2
A patient has partial-thickness skin loss with serous drainage. What stage is this
pressure injury?
A. Stage 1
B. Stage 2
C. Stage 3
D. Stage 4
Correct Answer: B. Stage 2
Rationale: Stage 2 pressure injuries involve partial-thickness skin loss with exposed
dermis and may include serous drainage. Stage 1 has intact skin, while stages 3 and 4
involve full-thickness tissue damage.
Question 7: Medication Safety
What is the most important nursing action before medication administration?
A. Ask family for approval
B. Check patient identity and medication order
C. Skip allergy check if routine medication
D. Administer quickly to avoid delay
Correct Answer: B. Check patient identity and medication order
Rationale: Safe medication administration requires verification of patient identity,
correct drug, dose, route, and time. Skipping allergy checks or relying on family input
increases risk of medication error.
Question 8: Opioid Side Effect
A patient receiving oxycodone becomes drowsy with slow breathing. What
complication is suspected?
A. Hypertension
B. Respiratory depression
C. Hyperglycemia
D. Infection
Correct Answer: B. Respiratory depression
Rationale: Opioids suppress the central nervous system, which can lead to respiratory
depression—a life-threatening complication. The other options are unrelated to opioid
toxicity.
, 2026/2027
Question 9: NG Tube Feeding Position
What is the correct position for a patient receiving NG tube feeding?
A. Supine
B. Trendelenburg
C. High Fowler’s
D. Prone
Correct Answer: C. High Fowler’s
Rationale: High Fowler’s position reduces aspiration risk by allowing gravity-assisted
gastric emptying. Supine or Trendelenburg positions significantly increase aspiration
risk.
Question 10: NG Medication Administration
What is the correct sequence for administering medications via NG tube?
A. Flush → meds → flush
B. Check placement → residual → flush → meds → flush
C. Meds → flush → placement
D. All meds together without flushing
Correct Answer: B. Check placement → residual → flush → meds → flush
Rationale: Proper NG administration requires confirming placement, checking
residual, flushing to ensure patency, administering medications separately, and
flushing again to prevent clogging and drug interactions.
Question 11: Enteric-Coated Medication
Which medication should NOT be crushed?
A. Liquid medication
B. Immediate-release tablet
C. Enteric-coated tablet
D. Chewable tablet
Correct Answer: C. Enteric-coated tablet
Rationale: Enteric-coated tablets are designed to dissolve in the intestines. Crushing
them destroys the coating, altering drug absorption and increasing gastric irritation
risk.
