Certified Bariatric Nurse (CBN) Practice Exam
Questions and Answers with Rationales Latest
Versions Top Rated
1. Which statement best describes obesity as a chronic disease?
A. It results primarily from lack of willpower
B. It is caused exclusively by excessive caloric intake
C. It involves complex genetic, metabolic, environmental, and
behavioral factors
D. It can always be permanently cured through short-term dieting
Answer: C
Rationale: Obesity is a chronic, multifactorial disease influenced by
genetics, metabolism, environment, behavior, medications,
socioeconomic factors, and other physiologic mechanisms. Reducing
obesity to willpower alone is inaccurate and contributes to stigma.
2. Which measurement is commonly used as an initial screening tool
for obesity classification in adults?
A. Waist-to-hip ratio
B. Body mass index (BMI)
C. Serum albumin
D. Resting heart rate
Answer: B
Rationale: BMI is calculated from weight and height and is commonly
used for initial classification of weight status. However, BMI does not
directly measure body-fat distribution or overall metabolic health.
,3. A bariatric patient reports drinking large amounts of carbonated
beverages after surgery. What is the nurse's priority teaching?
A. Carbonated beverages improve gastric emptying
B. Carbonation should be encouraged to increase fluid intake
C. Carbonated beverages may contribute to discomfort and should
generally be avoided
D. Carbonation prevents postoperative nausea
Answer: C
Rationale: Carbonated beverages may cause gas, bloating, discomfort,
and difficulty tolerating intake after bariatric procedures. Patients are
generally encouraged to choose appropriate noncarbonated fluids.
4. Which postoperative finding after bariatric surgery requires the
most immediate evaluation?
A. Mild incisional discomfort
B. Small amount of bruising around an incision
C. Persistent tachycardia with abdominal pain
D. Mild fatigue
Answer: C
Rationale: Persistent tachycardia, particularly when associated with
abdominal pain, can indicate serious complications such as anastomotic
leak, bleeding, infection, or pulmonary embolism. Rapid assessment is
essential.
,5. A patient has undergone Roux-en-Y gastric bypass. Which
nutrient deficiency is particularly important to monitor?
A. Vitamin B12
B. Sodium only
C. Vitamin C only
D. Chloride only
Answer: A
Rationale: Roux-en-Y gastric bypass can reduce intake and alter
absorption of several nutrients, including vitamin B12, iron, folate,
calcium, and vitamin D. Lifelong supplementation and laboratory
monitoring are commonly required.
6. Which symptom is most characteristic of dumping syndrome?
A. Bradycardia occurring several weeks after eating
B. Cramping, diaphoresis, weakness, and diarrhea after meals
C. Constipation immediately after drinking water
D. Persistent hypertension after meals
Answer: B
Rationale: Dumping syndrome may occur when gastric contents enter
the small intestine rapidly. Symptoms can include abdominal cramping,
diarrhea, nausea, flushing, diaphoresis, palpitations, weakness, and
dizziness.
7. Which dietary behavior is most appropriate after bariatric
surgery?
, A. Drinking large amounts of fluid with meals
B. Eating quickly to finish meals before becoming full
C. Taking small bites and eating slowly
D. Consuming high-sugar beverages throughout the day
Answer: C
Rationale: Bariatric patients are generally taught to eat slowly, chew
thoroughly, use small portions, and stop when they experience satiety.
These behaviors improve tolerance and help prevent complications.
8. Which macronutrient should generally receive particular
emphasis during early postoperative nutritional progression?
A. Protein
B. Simple sugar
C. Alcohol
D. Saturated fat
Answer: A
Rationale: Adequate protein supports wound healing, preservation of
lean body mass, and recovery. Bariatric nutrition plans typically
prioritize protein within the patient's prescribed dietary progression.
9. A patient asks why lifelong vitamin and mineral supplementation
may be necessary following bariatric surgery. Which response is
best?
A. "The supplements are only needed because your stomach is
temporarily irritated."
B. "Surgery can permanently alter food intake and nutrient absorption."
Questions and Answers with Rationales Latest
Versions Top Rated
1. Which statement best describes obesity as a chronic disease?
A. It results primarily from lack of willpower
B. It is caused exclusively by excessive caloric intake
C. It involves complex genetic, metabolic, environmental, and
behavioral factors
D. It can always be permanently cured through short-term dieting
Answer: C
Rationale: Obesity is a chronic, multifactorial disease influenced by
genetics, metabolism, environment, behavior, medications,
socioeconomic factors, and other physiologic mechanisms. Reducing
obesity to willpower alone is inaccurate and contributes to stigma.
2. Which measurement is commonly used as an initial screening tool
for obesity classification in adults?
A. Waist-to-hip ratio
B. Body mass index (BMI)
C. Serum albumin
D. Resting heart rate
Answer: B
Rationale: BMI is calculated from weight and height and is commonly
used for initial classification of weight status. However, BMI does not
directly measure body-fat distribution or overall metabolic health.
,3. A bariatric patient reports drinking large amounts of carbonated
beverages after surgery. What is the nurse's priority teaching?
A. Carbonated beverages improve gastric emptying
B. Carbonation should be encouraged to increase fluid intake
C. Carbonated beverages may contribute to discomfort and should
generally be avoided
D. Carbonation prevents postoperative nausea
Answer: C
Rationale: Carbonated beverages may cause gas, bloating, discomfort,
and difficulty tolerating intake after bariatric procedures. Patients are
generally encouraged to choose appropriate noncarbonated fluids.
4. Which postoperative finding after bariatric surgery requires the
most immediate evaluation?
A. Mild incisional discomfort
B. Small amount of bruising around an incision
C. Persistent tachycardia with abdominal pain
D. Mild fatigue
Answer: C
Rationale: Persistent tachycardia, particularly when associated with
abdominal pain, can indicate serious complications such as anastomotic
leak, bleeding, infection, or pulmonary embolism. Rapid assessment is
essential.
,5. A patient has undergone Roux-en-Y gastric bypass. Which
nutrient deficiency is particularly important to monitor?
A. Vitamin B12
B. Sodium only
C. Vitamin C only
D. Chloride only
Answer: A
Rationale: Roux-en-Y gastric bypass can reduce intake and alter
absorption of several nutrients, including vitamin B12, iron, folate,
calcium, and vitamin D. Lifelong supplementation and laboratory
monitoring are commonly required.
6. Which symptom is most characteristic of dumping syndrome?
A. Bradycardia occurring several weeks after eating
B. Cramping, diaphoresis, weakness, and diarrhea after meals
C. Constipation immediately after drinking water
D. Persistent hypertension after meals
Answer: B
Rationale: Dumping syndrome may occur when gastric contents enter
the small intestine rapidly. Symptoms can include abdominal cramping,
diarrhea, nausea, flushing, diaphoresis, palpitations, weakness, and
dizziness.
7. Which dietary behavior is most appropriate after bariatric
surgery?
, A. Drinking large amounts of fluid with meals
B. Eating quickly to finish meals before becoming full
C. Taking small bites and eating slowly
D. Consuming high-sugar beverages throughout the day
Answer: C
Rationale: Bariatric patients are generally taught to eat slowly, chew
thoroughly, use small portions, and stop when they experience satiety.
These behaviors improve tolerance and help prevent complications.
8. Which macronutrient should generally receive particular
emphasis during early postoperative nutritional progression?
A. Protein
B. Simple sugar
C. Alcohol
D. Saturated fat
Answer: A
Rationale: Adequate protein supports wound healing, preservation of
lean body mass, and recovery. Bariatric nutrition plans typically
prioritize protein within the patient's prescribed dietary progression.
9. A patient asks why lifelong vitamin and mineral supplementation
may be necessary following bariatric surgery. Which response is
best?
A. "The supplements are only needed because your stomach is
temporarily irritated."
B. "Surgery can permanently alter food intake and nutrient absorption."
