ATI CMS FUNDAMENTALS (2026) COMPLETE EXAM SET (QUESTIONS AND
VERIFIED ANSWERS) FREQUENTLY MOST TESTED QUESTIONS | ALREADY
PASSED!!
Question 1
A nurse is assessing a client who reports feeling relaxed but drowsy and states they "only slept
for a few minutes" before being easily awakened by a quiet noise. Which stage of sleep was this
client most likely in?
A) Stage 2
B) Stage 3
C) Stage 4
D) REM
E) Stage 1
Correct Answer: E) Stage 1
Rationale: Stage 1 sleep is characterized by very light sleep, lasting only a few minutes.
During this stage, the sleeper is easily awakened and typically feels relaxed and drowsy.
Question 2
During which stage of sleep is a client most likely to experience cognitive restoration and vivid
dreaming?
A) Stage 1
B) Stage 2
C) Stage 4
D) REM
E) Stage 3
Correct Answer: D) REM
Rationale: REM (Rapid Eye Movement) sleep typically begins 90 minutes after falling
asleep and is the stage associated with vivid dreaming and cognitive restoration. It is also a
very difficult stage from which to awaken.
Question 3
A client is observed sleepwalking and talking in their sleep. The nurse should recognize that
these behaviors typically occur during which stage of sleep?
A) REM
B) Stage 1
C) Stage 2
D) Stage 3
E) Stage 4
Correct Answer: E) Stage 4
Rationale: Stage 4 sleep, also known as "Delta Sleep," is the deepest stage of sleep. It is
characterized by behaviors such as sleepwalking, sleep talking, and enuresis (bed-wetting).
Question 4
A nurse is teaching a client about sleep hygiene. Which of the following instructions should the
, 2
nurse include?
A) Exercise within 30 minutes of bedtime.
B) Drink a glass of wine 1 hour before bed to promote relaxation.
C) Consume a caffeinated beverage in the late afternoon.
D) Limit alcohol, caffeine, and nicotine at least 4 hours before bed.
E) Use the bed for watching television and working on a laptop.
Correct Answer: D) Limit alcohol, caffeine, and nicotine at least 4 hours before bed.
Rationale: To promote restful sleep, clients should avoid stimulants and substances that
disrupt sleep architecture, such as alcohol, caffeine, and nicotine, for at least 4 hours prior
to bedtime.
Question 5
A client's sleep study reveals more than five breathing cessations lasting longer than 10 seconds
per hour. The nurse should identify this as a manifestation of which disorder?
A) Insomnia
B) Narcolepsy
C) Sleep apnea
D) Restless leg syndrome
E) Cataplexy
Correct Answer: C) Sleep apnea
Rationale: Sleep apnea is defined as more than five breathing cessations lasting longer than
10 seconds per hour, which leads to a decrease in arterial oxygen saturation.
Question 6
When providing nursing care to promote rest and sleep for a hospitalized client, which
intervention is appropriate?
A) Encourage the client to walk the halls frequently at night.
B) Avoid providing personal hygiene care before bed.
C) Help with a bedtime routine and provide a back rub.
D) Administer zolpidem every morning.
E) Keep the room lights on throughout the night for safety.
Correct Answer: C) Help with a bedtime routine and provide a back rub.
Rationale: Nursing considerations for rest and sleep include establishing a bedtime routine,
limiting night-time disturbances, and providing comfort measures such as personal hygiene
assistance and back rubs.
Question 7
How many minutes after falling asleep does REM sleep typically occur?
A) 10 minutes
B) 20 minutes
, 3
C) 45 minutes
D) 60 minutes
E) 90 minutes
Correct Answer: E) 90 minutes
Rationale: REM sleep generally occurs about 90 minutes after the onset of sleep and is
characterized by its difficulty to awaken the sleeper.
Question 8
Which of the following macronutrients provides the body with 9 kcal/g of energy?
A) Carbohydrates
B) Proteins
C) Fats
D) Water-soluble vitamins
E) Minerals
Correct Answer: C) Fats
Rationale: Fats are the most energy-dense macronutrient, providing 9 kcal per gram.
Examples include olive oil, salmon, and egg yolks.
Question 9
A nurse is teaching a client about carbohydrate intake. The nurse should explain that
carbohydrates provide how many kcal of energy per gram?
A) 4 kcal
B) 7 kcal
C) 9 kcal
D) 12 kcal
E) 2 kcal
Correct Answer: A) 4 kcal
Rationale: Carbohydrates provide 4 kcal per gram and are the body's primary source of
energy and fiber. Sources include whole grains, breads, and baked potatoes.
Question 10
Which macronutrient is primarily responsible for the growth, maintenance, and repair of body
tissue?
A) Fats
B) Proteins
C) Minerals
D) Simple sugars
E) Fat-soluble vitamins
Correct Answer: B) Proteins
VERIFIED ANSWERS) FREQUENTLY MOST TESTED QUESTIONS | ALREADY
PASSED!!
Question 1
A nurse is assessing a client who reports feeling relaxed but drowsy and states they "only slept
for a few minutes" before being easily awakened by a quiet noise. Which stage of sleep was this
client most likely in?
A) Stage 2
B) Stage 3
C) Stage 4
D) REM
E) Stage 1
Correct Answer: E) Stage 1
Rationale: Stage 1 sleep is characterized by very light sleep, lasting only a few minutes.
During this stage, the sleeper is easily awakened and typically feels relaxed and drowsy.
Question 2
During which stage of sleep is a client most likely to experience cognitive restoration and vivid
dreaming?
A) Stage 1
B) Stage 2
C) Stage 4
D) REM
E) Stage 3
Correct Answer: D) REM
Rationale: REM (Rapid Eye Movement) sleep typically begins 90 minutes after falling
asleep and is the stage associated with vivid dreaming and cognitive restoration. It is also a
very difficult stage from which to awaken.
Question 3
A client is observed sleepwalking and talking in their sleep. The nurse should recognize that
these behaviors typically occur during which stage of sleep?
A) REM
B) Stage 1
C) Stage 2
D) Stage 3
E) Stage 4
Correct Answer: E) Stage 4
Rationale: Stage 4 sleep, also known as "Delta Sleep," is the deepest stage of sleep. It is
characterized by behaviors such as sleepwalking, sleep talking, and enuresis (bed-wetting).
Question 4
A nurse is teaching a client about sleep hygiene. Which of the following instructions should the
, 2
nurse include?
A) Exercise within 30 minutes of bedtime.
B) Drink a glass of wine 1 hour before bed to promote relaxation.
C) Consume a caffeinated beverage in the late afternoon.
D) Limit alcohol, caffeine, and nicotine at least 4 hours before bed.
E) Use the bed for watching television and working on a laptop.
Correct Answer: D) Limit alcohol, caffeine, and nicotine at least 4 hours before bed.
Rationale: To promote restful sleep, clients should avoid stimulants and substances that
disrupt sleep architecture, such as alcohol, caffeine, and nicotine, for at least 4 hours prior
to bedtime.
Question 5
A client's sleep study reveals more than five breathing cessations lasting longer than 10 seconds
per hour. The nurse should identify this as a manifestation of which disorder?
A) Insomnia
B) Narcolepsy
C) Sleep apnea
D) Restless leg syndrome
E) Cataplexy
Correct Answer: C) Sleep apnea
Rationale: Sleep apnea is defined as more than five breathing cessations lasting longer than
10 seconds per hour, which leads to a decrease in arterial oxygen saturation.
Question 6
When providing nursing care to promote rest and sleep for a hospitalized client, which
intervention is appropriate?
A) Encourage the client to walk the halls frequently at night.
B) Avoid providing personal hygiene care before bed.
C) Help with a bedtime routine and provide a back rub.
D) Administer zolpidem every morning.
E) Keep the room lights on throughout the night for safety.
Correct Answer: C) Help with a bedtime routine and provide a back rub.
Rationale: Nursing considerations for rest and sleep include establishing a bedtime routine,
limiting night-time disturbances, and providing comfort measures such as personal hygiene
assistance and back rubs.
Question 7
How many minutes after falling asleep does REM sleep typically occur?
A) 10 minutes
B) 20 minutes
, 3
C) 45 minutes
D) 60 minutes
E) 90 minutes
Correct Answer: E) 90 minutes
Rationale: REM sleep generally occurs about 90 minutes after the onset of sleep and is
characterized by its difficulty to awaken the sleeper.
Question 8
Which of the following macronutrients provides the body with 9 kcal/g of energy?
A) Carbohydrates
B) Proteins
C) Fats
D) Water-soluble vitamins
E) Minerals
Correct Answer: C) Fats
Rationale: Fats are the most energy-dense macronutrient, providing 9 kcal per gram.
Examples include olive oil, salmon, and egg yolks.
Question 9
A nurse is teaching a client about carbohydrate intake. The nurse should explain that
carbohydrates provide how many kcal of energy per gram?
A) 4 kcal
B) 7 kcal
C) 9 kcal
D) 12 kcal
E) 2 kcal
Correct Answer: A) 4 kcal
Rationale: Carbohydrates provide 4 kcal per gram and are the body's primary source of
energy and fiber. Sources include whole grains, breads, and baked potatoes.
Question 10
Which macronutrient is primarily responsible for the growth, maintenance, and repair of body
tissue?
A) Fats
B) Proteins
C) Minerals
D) Simple sugars
E) Fat-soluble vitamins
Correct Answer: B) Proteins
