Page |1
CERTIFIED BARIATRIC NURSE (CBN) ACTUAL
EXAM [ QUESTION 1- 200] AND ANSWERS
UPDATED 2026/2027| 100% VERIFIED|DETAILED
RATIONALES –PASS GUARANTEED A+ GRADED
|INSTANT DOWNLOAD
Introduction: Welcome to the comprehensive practice examination for the Certified Bariatric
Nurse (CBN) credential. This rigorous practice set covers essential advanced clinical
competencies required for specialized bariatric nursing practice, bridging preoperative
assessment, intraoperative safety, and complex postoperative management. Designed in
alignment with official bariatric nursing objectives and modern metabolic and bariatric surgery
guidelines, this material emphasizes multidisciplinary care, metabolic alterations, nutritional
deficiencies, and psychological adaptation. Bariatric nursing requires a specialized
understanding of severe obesity pathophysiology, specialized bariatric equipment handling, and
early recognition of life-threatening complications such as anastomotic leaks, pulmonary emboli,
and internal herniation. Mastering these original, scenario-based questions will significantly
enhance your clinical decision-making, patient advocacy, and preparedness for the certification
examination. By engaging with these evidence-based questions and detailed rationales,
candidates will solidify their mastery of bariatric care pathways, ensuring safer patient
outcomes and optimal long-term health transformations for individuals undergoing metabolic
surgery.
Core Domains Covered:
1. Preoperative Patient Assessment and Selection: Comprehensive evaluation of metabolic and
bariatric surgery candidates, including multidisciplinary clearances, psychological evaluation,
comorbidity risk stratification, and optimization protocols.
2. Nutritional Management and Metabolic Support: Preoperative and postoperative
nutritional assessments, lifelong vitamin and mineral supplementation guidelines,
macronutrient targets, and prevention of deficiency-related neuropathies.
3. Intraoperative Care and Safety Considerations: Specialized bariatric surgical equipment
management, patient positioning, skin integrity protection, prevention of positioning injuries,
and intraoperative pharmacokinetics.
4. Postoperative Recovery and Immediate Care: Management of the immediate post-surgical
phase, pain control strategies, early ambulation protocols, graduated dietary progression, and
fluid management.
5. Identification and Management of Surgical Complications: Early detection, diagnostic
workup, and emergency intervention for acute surgical emergencies including anastomotic
leaks, bowel obstruction, hemorrhage, and venous thromboembolism.
6. Long-Term Weight Management and Lifestyle Modification: Monitoring post-bariatric
weight loss trajectories, managing weight recidivism, addressing behavioral health
considerations, and supporting long-term physical activity.
,Page |2
7. Management of Weight-Related Comorbidities: Evaluating the remission or improvement of
obesity-associated conditions such as type 2 diabetes mellitus, obstructive sleep apnea,
hypertension, non-alcoholic fatty liver disease, and dyslipidemia.
8. Bariatric Pharmacology and Pharmacokinetics: Adjustments in medication absorption,
bioavailability, and dosing following restrictive and malabsorptive bariatric procedures, along
with safe prescribing practices.
Question 1: A 42-year-old female being evaluated for a Roux-en-Y gastric bypass (RYGB)
reports a history of severe chronic daily use of non-steroidal anti-inflammatory drugs (NSAIDs)
for osteoarthritis. Which of the following is the most critical postoperative risk associated with
this medication history?
A) Dumping syndrome
B) B) Marginal ulceration
C) Protein-calorie malnutrition
D) Vitamin B12 deficiency
Rationale: Marginal ulcers are a well-documented and serious complication following Roux-en-
Y gastric bypass, typically occurring at the gastrojejunostomy site. Chronic preoperative or
postoperative NSAID use significantly compromises the mucosal defense of the gastric pouch
and newly formed anastomosis, greatly increasing the risk of ulceration, perforation, and
stricture. Option A is incorrect because dumping syndrome is triggered by the rapid transit of
simple carbohydrates into the small bowel, not NSAIDs. Option C is incorrect because protein-
calorie malnutrition relates to inadequate intake or malabsorption of macronutrients. Option D
is incorrect because Vitamin B12 deficiency results from decreased intrinsic factor production
and inadequate parietal cell function, though NSAIDs can cause gastritis, they are not the
primary driver of B12 malabsorption compared to gastric acid reduction and intrinsic factor
loss.
Question 2: During the immediate postoperative period following a laparoscopic sleeve
gastrectomy, a 48-year-old male patient exhibits sudden-onset tachycardia of 125 beats per
minute, tachypnea, mild left shoulder pain, and a low-grade fever. Which of the following
diagnostic modalities is the gold standard for evaluating this patient's primary suspected
complication?
A) Plain abdominal radiograph
B) Upper gastrointestinal (UGI) series with water-soluble contrast
C) C) Computed tomography (CT) scan of the abdomen and pelvis with oral and IV water-
soluble contrast
D) Diagnostic laparoscopy
Rationale: Tachycardia (often the earliest and most sensitive sign of a leak), tachypnea, fever,
and unexplained left shoulder pain (referred pain from diaphragmatic irritation) strongly
suggest an acute staple line leak or collection following sleeve gastrectomy. A CT scan with oral
and IV water-soluble contrast is the gold standard because it has high sensitivity for detecting
extraluminal air, fluid collections, and contrast extravasation. Option A (plain radiograph) lacks
the sensitivity required to rule out a leak. Option B (UGI series) is useful but has a notable false-
negative rate, particularly for smaller leaks, making CT imaging superior. Option D (diagnostic
laparoscopy) is a therapeutic intervention reserved for confirmed cases or high clinical
suspicion when imaging is inconclusive.
,Page |3
Question 3: A 36-year-old female who underwent a biliopancreatic diversion with duodenal
switch (BPD/DS) 18 months ago presents with severe night blindness, dry scaling skin, and
Bitot's spots on her conjunctiva. These clinical manifestations are most indicative of a deficiency
in which essential nutrient?
A) Thiamine (Vitamin B1)
B) Vitamin D
C) C) Vitamin A
D) Vitamin E
Rationale: Vitamin A is a fat-soluble vitamin whose absorption can be severely impaired
following malabsorptive bariatric procedures like the BPD/DS due to the shortening of the
common channel and decreased fat digestion. Classic deficiency signs include night blindness
(nyctalopia), xerosis, and Bitot's spots. Option A is incorrect because thiamine deficiency
manifests as Wernicke-Korsakoff syndrome or dry beriberi. Option B is incorrect because
Vitamin D deficiency leads to osteomalacia, rickets, or hypocalcemia. Option D is incorrect
because Vitamin E deficiency presents primarily with hemolytic anemia and neurological deficits
such as ataxia and peripheral neuropathy.
Question 4: A 50-year-old male with a body mass index (BMI) of 52 is scheduled for a primary
laparoscopic Roux-en-Y gastric bypass. During the preoperative assessment, the bariatric nurse
notes that the patient has severe obstructive sleep apnea (OSA) and uses continuous positive
airway pressure (CPAP) at home. What is the most appropriate perioperative airway
management intervention for this patient?
A) Discontinue CPAP use 48 hours prior to surgery to allow the upper airway to rest.
B) B) Ensure immediate availability of postoperative positive airway pressure therapy in
the post-anesthesia care unit and inpatient bariatric unit.
C) Convert the anesthetic plan to regional anesthesia only, avoiding all opioids.
D) Delay extubation until the patient has lost at least 10 percent of their excess body weight.
Rationale: Patients with severe obstructive sleep apnea are at an exceedingly high risk for
postoperative respiratory depression, airway collapse, and hypoxemia, particularly when
combined with surgical trauma and opioid analgesics. Continuing their home positive airway
pressure (PAP) therapy immediately in the recovery and inpatient settings is critical for
maintaining airway patency. Option A is incorrect because discontinuing CPAP increases the
risk of acute respiratory decompensation. Option C is incorrect because bariatric surgery
requires general anesthesia. Option D is incorrect because extubation is based on standard
extubation criteria when the patient is fully awake and breathing spontaneously, not contingent
on prior weight loss.
Question 5: A 29-year-old female 6 weeks post-sleeve gastrectomy calls the bariatric clinic
complaining of severe, excessive hair shedding when brushing and showering. She is distressed
and worried she is going completely bald. What is the most appropriate nursing response?
A) Immediately stop all multi-vitamin supplementation as this is a sign of toxicity.
B) B) Reassure the patient that telogen effluvium is a common, temporary physiological
response to rapid weight loss and metabolic stress, usually resolving spontaneously within
several months.
C) Schedule an emergency endoscopic evaluation to check for staple line failure.
, Page |4
D) Prescribe high-dose systemic corticosteroids to arrest the autoimmune follicle destruction.
Rationale: Telogen effluvium is a benign and very common condition occurring 3 to 6 months
following significant bariatric surgery due to the physiological stress of rapid weight loss,
caloric restriction, and anesthesia. Hair follicles prematurely shift into the resting phase.
Reassurance, adequate protein intake (minimum 60 to 80 grams daily), and adherence to
micronutrient supplements are the standard recommendations. Option A is incorrect because
hair loss is not a sign of vitamin toxicity. Option C is incorrect because hair loss is entirely
unrelated to staple line integrity. Option D is incorrect because corticosteroids are neither
indicated nor helpful for bariatric-related hair shedding.
Question 6: A bariatric nurse is educating a patient who is 3 days post-bariatric surgery about
transitioning from clear liquids to a full liquid and pureed diet phase. Which of the following
dietary principles should the nurse emphasize most strongly?
A) Drink liquids rapidly with meals to assist in moving food through the gastric pouch.
B) B) Separate solid foods and liquids by at least 30 minutes to prevent overfilling the
pouch and dumping syndrome.
C) Consume sugary fruit juices liberally to maintain high daily caloric intake.
D) Eat large meals three times a day rather than frequent small meals to train the stomach.
Rationale: A core bariatric dietary rule is separating solid food and liquids by 30 minutes before
and after meals. Drinking fluids with meals fills the small gastric pouch prematurely, washes
food through too quickly, decreases satiety, and can trigger dumping syndrome in procedures
with a bypassed segment. Option A is incorrect because drinking rapidly with meals causes
discomfort and overdistension. Option C is incorrect because simple sugars and high-sugar
juices provoke dumping syndrome and undermine weight loss. Option D is incorrect because
patients must consume small, frequent, protein-dense meals rather than large meals.
Question 7: A bariatric nurse is assessing a patient 24 hours after undergoing a laparoscopic
Roux-en-Y gastric bypass. The patient reports severe, sharp pain in the left shoulder and
shortness of breath. Vital signs: Heart rate 118 bpm, Blood pressure 110/70 mmHg, Respiratory
rate 24 breaths/min, SpO2 91 percent on room air, Temperature 37.2 degrees Celsius. What is
the nurse's priority action?
A) Administer an intravenous bolus of normal saline for dehydration.
B) B) Escalate findings immediately to the bariatric surgeon and prepare for urgent
diagnostic workup to rule out a pulmonary embolism or anastomotic leak.
C) Apply an abdominal binder tightly to relieve diaphragmatic pressure.
D) Encourage deep breathing exercises using an incentive spirometer and reassess in 4 hours.
Rationale: Tachycardia (heart rate greater than 100 bpm), tachypnea, desaturation (SpO2 91
percent), and left shoulder pain in the immediate postoperative period are cardinal warning
signs of serious complications such as a pulmonary embolism (PE) or an anastomotic leak.
Tachycardia is frequently the earliest sign of a leak or VTE in bariatric patients. Immediate
escalation to the surgical team is mandatory. Option A addresses fluid status but delays critical
evaluation for life-threatening pathology. Option C is incorrect because an abdominal binder
can compromise respiratory expansion further. Option D is incorrect because while incentive
spirometry is useful, waiting 4 hours in the presence of unstable vital signs and high-risk
symptoms is unsafe.
CERTIFIED BARIATRIC NURSE (CBN) ACTUAL
EXAM [ QUESTION 1- 200] AND ANSWERS
UPDATED 2026/2027| 100% VERIFIED|DETAILED
RATIONALES –PASS GUARANTEED A+ GRADED
|INSTANT DOWNLOAD
Introduction: Welcome to the comprehensive practice examination for the Certified Bariatric
Nurse (CBN) credential. This rigorous practice set covers essential advanced clinical
competencies required for specialized bariatric nursing practice, bridging preoperative
assessment, intraoperative safety, and complex postoperative management. Designed in
alignment with official bariatric nursing objectives and modern metabolic and bariatric surgery
guidelines, this material emphasizes multidisciplinary care, metabolic alterations, nutritional
deficiencies, and psychological adaptation. Bariatric nursing requires a specialized
understanding of severe obesity pathophysiology, specialized bariatric equipment handling, and
early recognition of life-threatening complications such as anastomotic leaks, pulmonary emboli,
and internal herniation. Mastering these original, scenario-based questions will significantly
enhance your clinical decision-making, patient advocacy, and preparedness for the certification
examination. By engaging with these evidence-based questions and detailed rationales,
candidates will solidify their mastery of bariatric care pathways, ensuring safer patient
outcomes and optimal long-term health transformations for individuals undergoing metabolic
surgery.
Core Domains Covered:
1. Preoperative Patient Assessment and Selection: Comprehensive evaluation of metabolic and
bariatric surgery candidates, including multidisciplinary clearances, psychological evaluation,
comorbidity risk stratification, and optimization protocols.
2. Nutritional Management and Metabolic Support: Preoperative and postoperative
nutritional assessments, lifelong vitamin and mineral supplementation guidelines,
macronutrient targets, and prevention of deficiency-related neuropathies.
3. Intraoperative Care and Safety Considerations: Specialized bariatric surgical equipment
management, patient positioning, skin integrity protection, prevention of positioning injuries,
and intraoperative pharmacokinetics.
4. Postoperative Recovery and Immediate Care: Management of the immediate post-surgical
phase, pain control strategies, early ambulation protocols, graduated dietary progression, and
fluid management.
5. Identification and Management of Surgical Complications: Early detection, diagnostic
workup, and emergency intervention for acute surgical emergencies including anastomotic
leaks, bowel obstruction, hemorrhage, and venous thromboembolism.
6. Long-Term Weight Management and Lifestyle Modification: Monitoring post-bariatric
weight loss trajectories, managing weight recidivism, addressing behavioral health
considerations, and supporting long-term physical activity.
,Page |2
7. Management of Weight-Related Comorbidities: Evaluating the remission or improvement of
obesity-associated conditions such as type 2 diabetes mellitus, obstructive sleep apnea,
hypertension, non-alcoholic fatty liver disease, and dyslipidemia.
8. Bariatric Pharmacology and Pharmacokinetics: Adjustments in medication absorption,
bioavailability, and dosing following restrictive and malabsorptive bariatric procedures, along
with safe prescribing practices.
Question 1: A 42-year-old female being evaluated for a Roux-en-Y gastric bypass (RYGB)
reports a history of severe chronic daily use of non-steroidal anti-inflammatory drugs (NSAIDs)
for osteoarthritis. Which of the following is the most critical postoperative risk associated with
this medication history?
A) Dumping syndrome
B) B) Marginal ulceration
C) Protein-calorie malnutrition
D) Vitamin B12 deficiency
Rationale: Marginal ulcers are a well-documented and serious complication following Roux-en-
Y gastric bypass, typically occurring at the gastrojejunostomy site. Chronic preoperative or
postoperative NSAID use significantly compromises the mucosal defense of the gastric pouch
and newly formed anastomosis, greatly increasing the risk of ulceration, perforation, and
stricture. Option A is incorrect because dumping syndrome is triggered by the rapid transit of
simple carbohydrates into the small bowel, not NSAIDs. Option C is incorrect because protein-
calorie malnutrition relates to inadequate intake or malabsorption of macronutrients. Option D
is incorrect because Vitamin B12 deficiency results from decreased intrinsic factor production
and inadequate parietal cell function, though NSAIDs can cause gastritis, they are not the
primary driver of B12 malabsorption compared to gastric acid reduction and intrinsic factor
loss.
Question 2: During the immediate postoperative period following a laparoscopic sleeve
gastrectomy, a 48-year-old male patient exhibits sudden-onset tachycardia of 125 beats per
minute, tachypnea, mild left shoulder pain, and a low-grade fever. Which of the following
diagnostic modalities is the gold standard for evaluating this patient's primary suspected
complication?
A) Plain abdominal radiograph
B) Upper gastrointestinal (UGI) series with water-soluble contrast
C) C) Computed tomography (CT) scan of the abdomen and pelvis with oral and IV water-
soluble contrast
D) Diagnostic laparoscopy
Rationale: Tachycardia (often the earliest and most sensitive sign of a leak), tachypnea, fever,
and unexplained left shoulder pain (referred pain from diaphragmatic irritation) strongly
suggest an acute staple line leak or collection following sleeve gastrectomy. A CT scan with oral
and IV water-soluble contrast is the gold standard because it has high sensitivity for detecting
extraluminal air, fluid collections, and contrast extravasation. Option A (plain radiograph) lacks
the sensitivity required to rule out a leak. Option B (UGI series) is useful but has a notable false-
negative rate, particularly for smaller leaks, making CT imaging superior. Option D (diagnostic
laparoscopy) is a therapeutic intervention reserved for confirmed cases or high clinical
suspicion when imaging is inconclusive.
,Page |3
Question 3: A 36-year-old female who underwent a biliopancreatic diversion with duodenal
switch (BPD/DS) 18 months ago presents with severe night blindness, dry scaling skin, and
Bitot's spots on her conjunctiva. These clinical manifestations are most indicative of a deficiency
in which essential nutrient?
A) Thiamine (Vitamin B1)
B) Vitamin D
C) C) Vitamin A
D) Vitamin E
Rationale: Vitamin A is a fat-soluble vitamin whose absorption can be severely impaired
following malabsorptive bariatric procedures like the BPD/DS due to the shortening of the
common channel and decreased fat digestion. Classic deficiency signs include night blindness
(nyctalopia), xerosis, and Bitot's spots. Option A is incorrect because thiamine deficiency
manifests as Wernicke-Korsakoff syndrome or dry beriberi. Option B is incorrect because
Vitamin D deficiency leads to osteomalacia, rickets, or hypocalcemia. Option D is incorrect
because Vitamin E deficiency presents primarily with hemolytic anemia and neurological deficits
such as ataxia and peripheral neuropathy.
Question 4: A 50-year-old male with a body mass index (BMI) of 52 is scheduled for a primary
laparoscopic Roux-en-Y gastric bypass. During the preoperative assessment, the bariatric nurse
notes that the patient has severe obstructive sleep apnea (OSA) and uses continuous positive
airway pressure (CPAP) at home. What is the most appropriate perioperative airway
management intervention for this patient?
A) Discontinue CPAP use 48 hours prior to surgery to allow the upper airway to rest.
B) B) Ensure immediate availability of postoperative positive airway pressure therapy in
the post-anesthesia care unit and inpatient bariatric unit.
C) Convert the anesthetic plan to regional anesthesia only, avoiding all opioids.
D) Delay extubation until the patient has lost at least 10 percent of their excess body weight.
Rationale: Patients with severe obstructive sleep apnea are at an exceedingly high risk for
postoperative respiratory depression, airway collapse, and hypoxemia, particularly when
combined with surgical trauma and opioid analgesics. Continuing their home positive airway
pressure (PAP) therapy immediately in the recovery and inpatient settings is critical for
maintaining airway patency. Option A is incorrect because discontinuing CPAP increases the
risk of acute respiratory decompensation. Option C is incorrect because bariatric surgery
requires general anesthesia. Option D is incorrect because extubation is based on standard
extubation criteria when the patient is fully awake and breathing spontaneously, not contingent
on prior weight loss.
Question 5: A 29-year-old female 6 weeks post-sleeve gastrectomy calls the bariatric clinic
complaining of severe, excessive hair shedding when brushing and showering. She is distressed
and worried she is going completely bald. What is the most appropriate nursing response?
A) Immediately stop all multi-vitamin supplementation as this is a sign of toxicity.
B) B) Reassure the patient that telogen effluvium is a common, temporary physiological
response to rapid weight loss and metabolic stress, usually resolving spontaneously within
several months.
C) Schedule an emergency endoscopic evaluation to check for staple line failure.
, Page |4
D) Prescribe high-dose systemic corticosteroids to arrest the autoimmune follicle destruction.
Rationale: Telogen effluvium is a benign and very common condition occurring 3 to 6 months
following significant bariatric surgery due to the physiological stress of rapid weight loss,
caloric restriction, and anesthesia. Hair follicles prematurely shift into the resting phase.
Reassurance, adequate protein intake (minimum 60 to 80 grams daily), and adherence to
micronutrient supplements are the standard recommendations. Option A is incorrect because
hair loss is not a sign of vitamin toxicity. Option C is incorrect because hair loss is entirely
unrelated to staple line integrity. Option D is incorrect because corticosteroids are neither
indicated nor helpful for bariatric-related hair shedding.
Question 6: A bariatric nurse is educating a patient who is 3 days post-bariatric surgery about
transitioning from clear liquids to a full liquid and pureed diet phase. Which of the following
dietary principles should the nurse emphasize most strongly?
A) Drink liquids rapidly with meals to assist in moving food through the gastric pouch.
B) B) Separate solid foods and liquids by at least 30 minutes to prevent overfilling the
pouch and dumping syndrome.
C) Consume sugary fruit juices liberally to maintain high daily caloric intake.
D) Eat large meals three times a day rather than frequent small meals to train the stomach.
Rationale: A core bariatric dietary rule is separating solid food and liquids by 30 minutes before
and after meals. Drinking fluids with meals fills the small gastric pouch prematurely, washes
food through too quickly, decreases satiety, and can trigger dumping syndrome in procedures
with a bypassed segment. Option A is incorrect because drinking rapidly with meals causes
discomfort and overdistension. Option C is incorrect because simple sugars and high-sugar
juices provoke dumping syndrome and undermine weight loss. Option D is incorrect because
patients must consume small, frequent, protein-dense meals rather than large meals.
Question 7: A bariatric nurse is assessing a patient 24 hours after undergoing a laparoscopic
Roux-en-Y gastric bypass. The patient reports severe, sharp pain in the left shoulder and
shortness of breath. Vital signs: Heart rate 118 bpm, Blood pressure 110/70 mmHg, Respiratory
rate 24 breaths/min, SpO2 91 percent on room air, Temperature 37.2 degrees Celsius. What is
the nurse's priority action?
A) Administer an intravenous bolus of normal saline for dehydration.
B) B) Escalate findings immediately to the bariatric surgeon and prepare for urgent
diagnostic workup to rule out a pulmonary embolism or anastomotic leak.
C) Apply an abdominal binder tightly to relieve diaphragmatic pressure.
D) Encourage deep breathing exercises using an incentive spirometer and reassess in 4 hours.
Rationale: Tachycardia (heart rate greater than 100 bpm), tachypnea, desaturation (SpO2 91
percent), and left shoulder pain in the immediate postoperative period are cardinal warning
signs of serious complications such as a pulmonary embolism (PE) or an anastomotic leak.
Tachycardia is frequently the earliest sign of a leak or VTE in bariatric patients. Immediate
escalation to the surgical team is mandatory. Option A addresses fluid status but delays critical
evaluation for life-threatening pathology. Option C is incorrect because an abdominal binder
can compromise respiratory expansion further. Option D is incorrect because while incentive
spirometry is useful, waiting 4 hours in the presence of unstable vital signs and high-risk
symptoms is unsafe.
