Certified Bariatric Nurse (CBN®) Exam 2026 Latest
Comprehensive Study Guide with Practice Questions
Bariatric Nursing Review • Detailed Rationales •
Verified Answers • Success
Section 1: Clinical Management – Preoperative (Pre-hospital)
1. A 52-year-old patient with a BMI of 42 presents for initial bariatric surgery
consultation. Which of the following is the most appropriate initial nursing
action?
A. Schedule the patient for immediate surgery
B. Obtain a comprehensive medical, surgical, psychosocial, and cultural history
C. Recommend a very low-calorie diet (VLCD) for 6 months
D. Order a full lipid panel only
Answer: B
Rationale: The preoperative assessment must include a comprehensive review of
medical, surgical, psychosocial, religious, cultural, family, and weight history to
identify risks and unique needs of the bariatric surgery candidate. A full lipid panel
alone (A) is insufficient. Immediate surgery (A) bypasses necessary evaluation.
VLCD without multidisciplinary assessment (C) is inappropriate as a first step.
2. A patient seeking bariatric surgery discloses a history of binge-eating disorder.
Which action should the nurse prioritize?
A. Proceed with surgery as scheduled
B. Refer the patient for specialized psychological evaluation and treatment prior
to surgery
C. Recommend a low-calorie liquid diet
D. Document the history and proceed
Answer: B
,Rationale: A history of binge-eating disorder is a significant predictor of poor
dietary adherence after surgery. Addressing this pre-operatively through
specialized psychological evaluation and treatment improves postoperative
outcomes. Proceeding without intervention (A, D) increases the risk of non-
adherence and complications.
3. A 16-year-old adolescent is being evaluated for bariatric surgery. What unique
consideration must the nurse include in the preoperative assessment?
A. Same assessment as adult patients
B. Age-related needs specific to adolescence (13–18 years)
C. Surgery is contraindicated for all adolescents
D. Only psychosocial assessment is needed
Answer: B
Rationale: The CBN examination content outline specifically identifies unique age-
related needs for both adolescence (13–18 years) and geriatric patients (70 years
or over). Adolescents require special consideration for growth and development,
family dynamics, and long-term adherence.
4. A 68-year-old patient with a BMI of 38 and well-controlled type 2 diabetes is
being evaluated for bariatric surgery. Which assessment finding would be most
concerning?
A. HbA1c of 6.8%
B. History of hypertension
C. BMI of 38
D. Cognitive impairment or inability to understand postoperative instructions
Answer: D
Rationale: While older adults may have multiple comorbidities, cognitive
impairment or inability to understand and follow postoperative instructions is a
significant contraindication. The nurse must evaluate the patient's understanding
of bariatric surgery options and ability to comply with the medical regimen.
,5. Which of the following patients meets current clinical guidelines for bariatric
surgery eligibility?
A. BMI 30 with no comorbidities
B. BMI 34 with well-controlled hypertension
C. BMI 35 with obesity-related comorbidities
D. BMI 32 with type 2 diabetes
Answer: C
Rationale: Current clinical guidelines establish surgical eligibility for patients with
a BMI of 35 or higher who have weight-related comorbidities. A BMI of 30
without comorbidities (A) does not meet criteria. A BMI of 34 with hypertension
(B) falls below the threshold unless Asian-specific criteria apply.
6. The nurse is educating a preoperative patient about bariatric surgery options.
Which information must be included?
A. Only the benefits of surgery
B. Risks, benefits, and alternatives to treatment options
C. A guarantee of 100% weight loss
D. Only information about the Roux-en-Y gastric bypass
Answer: B
Rationale: The nurse must educate patients about disease of obesity, treatment
options and alternatives, and risks and benefits of treatment options to assist
them in making an informed decision. Providing only benefits (A) or only one
procedure (D) is unethical and incomplete.
7. A preoperative patient asks about the expected clinical outcomes after bariatric
surgery. What is the nurse's best response?
A. "You will lose all your excess weight within 6 months"
B. "Expected outcomes include weight loss, improvement of comorbidities, and
, enhanced quality of life, though results vary by individual"
C. "Surgery is the only solution for your obesity"
D. "You should not expect any improvement in your diabetes"
Answer: B
Rationale: Expected clinical outcomes include weight loss, improvement or
resolution of obesity-related conditions, and enhanced quality of life. Outcomes
vary significantly by individual, and no guarantees can be made (A). Surgery is not
the only solution (C), and many patients do experience improvement in diabetes
(D).
8. The nurse is reviewing medication history with a preoperative bariatric patient.
Which medication class is most likely to contribute to weight gain and may
require adjustment?
A. Antibiotics
B. Selective serotonin reuptake inhibitors (SSRIs)
C. Antihypertensives
D. Anticoagulants
Answer: B
Rationale: Many antidepressants, particularly SSRIs, can cause weight gain.
Nurses must track this during weight loss care and coordinate with prescribing
providers for potential medication adjustments preoperatively.
9. A patient is considering bariatric surgery and has attempted multiple weight-
loss methods without success. Which of the following would be considered a
contraindication to proceeding with surgery?
A. Failure to achieve 5% weight loss after 6 months on a medically supervised very
low-calorie diet (VLCD)
B. Intermittent fasting without nutritionist oversight
C. Successful weight loss with lifestyle modifications
D. Participation in a structured preoperative weight-loss program
Comprehensive Study Guide with Practice Questions
Bariatric Nursing Review • Detailed Rationales •
Verified Answers • Success
Section 1: Clinical Management – Preoperative (Pre-hospital)
1. A 52-year-old patient with a BMI of 42 presents for initial bariatric surgery
consultation. Which of the following is the most appropriate initial nursing
action?
A. Schedule the patient for immediate surgery
B. Obtain a comprehensive medical, surgical, psychosocial, and cultural history
C. Recommend a very low-calorie diet (VLCD) for 6 months
D. Order a full lipid panel only
Answer: B
Rationale: The preoperative assessment must include a comprehensive review of
medical, surgical, psychosocial, religious, cultural, family, and weight history to
identify risks and unique needs of the bariatric surgery candidate. A full lipid panel
alone (A) is insufficient. Immediate surgery (A) bypasses necessary evaluation.
VLCD without multidisciplinary assessment (C) is inappropriate as a first step.
2. A patient seeking bariatric surgery discloses a history of binge-eating disorder.
Which action should the nurse prioritize?
A. Proceed with surgery as scheduled
B. Refer the patient for specialized psychological evaluation and treatment prior
to surgery
C. Recommend a low-calorie liquid diet
D. Document the history and proceed
Answer: B
,Rationale: A history of binge-eating disorder is a significant predictor of poor
dietary adherence after surgery. Addressing this pre-operatively through
specialized psychological evaluation and treatment improves postoperative
outcomes. Proceeding without intervention (A, D) increases the risk of non-
adherence and complications.
3. A 16-year-old adolescent is being evaluated for bariatric surgery. What unique
consideration must the nurse include in the preoperative assessment?
A. Same assessment as adult patients
B. Age-related needs specific to adolescence (13–18 years)
C. Surgery is contraindicated for all adolescents
D. Only psychosocial assessment is needed
Answer: B
Rationale: The CBN examination content outline specifically identifies unique age-
related needs for both adolescence (13–18 years) and geriatric patients (70 years
or over). Adolescents require special consideration for growth and development,
family dynamics, and long-term adherence.
4. A 68-year-old patient with a BMI of 38 and well-controlled type 2 diabetes is
being evaluated for bariatric surgery. Which assessment finding would be most
concerning?
A. HbA1c of 6.8%
B. History of hypertension
C. BMI of 38
D. Cognitive impairment or inability to understand postoperative instructions
Answer: D
Rationale: While older adults may have multiple comorbidities, cognitive
impairment or inability to understand and follow postoperative instructions is a
significant contraindication. The nurse must evaluate the patient's understanding
of bariatric surgery options and ability to comply with the medical regimen.
,5. Which of the following patients meets current clinical guidelines for bariatric
surgery eligibility?
A. BMI 30 with no comorbidities
B. BMI 34 with well-controlled hypertension
C. BMI 35 with obesity-related comorbidities
D. BMI 32 with type 2 diabetes
Answer: C
Rationale: Current clinical guidelines establish surgical eligibility for patients with
a BMI of 35 or higher who have weight-related comorbidities. A BMI of 30
without comorbidities (A) does not meet criteria. A BMI of 34 with hypertension
(B) falls below the threshold unless Asian-specific criteria apply.
6. The nurse is educating a preoperative patient about bariatric surgery options.
Which information must be included?
A. Only the benefits of surgery
B. Risks, benefits, and alternatives to treatment options
C. A guarantee of 100% weight loss
D. Only information about the Roux-en-Y gastric bypass
Answer: B
Rationale: The nurse must educate patients about disease of obesity, treatment
options and alternatives, and risks and benefits of treatment options to assist
them in making an informed decision. Providing only benefits (A) or only one
procedure (D) is unethical and incomplete.
7. A preoperative patient asks about the expected clinical outcomes after bariatric
surgery. What is the nurse's best response?
A. "You will lose all your excess weight within 6 months"
B. "Expected outcomes include weight loss, improvement of comorbidities, and
, enhanced quality of life, though results vary by individual"
C. "Surgery is the only solution for your obesity"
D. "You should not expect any improvement in your diabetes"
Answer: B
Rationale: Expected clinical outcomes include weight loss, improvement or
resolution of obesity-related conditions, and enhanced quality of life. Outcomes
vary significantly by individual, and no guarantees can be made (A). Surgery is not
the only solution (C), and many patients do experience improvement in diabetes
(D).
8. The nurse is reviewing medication history with a preoperative bariatric patient.
Which medication class is most likely to contribute to weight gain and may
require adjustment?
A. Antibiotics
B. Selective serotonin reuptake inhibitors (SSRIs)
C. Antihypertensives
D. Anticoagulants
Answer: B
Rationale: Many antidepressants, particularly SSRIs, can cause weight gain.
Nurses must track this during weight loss care and coordinate with prescribing
providers for potential medication adjustments preoperatively.
9. A patient is considering bariatric surgery and has attempted multiple weight-
loss methods without success. Which of the following would be considered a
contraindication to proceeding with surgery?
A. Failure to achieve 5% weight loss after 6 months on a medically supervised very
low-calorie diet (VLCD)
B. Intermittent fasting without nutritionist oversight
C. Successful weight loss with lifestyle modifications
D. Participation in a structured preoperative weight-loss program
