CCE-CBD-065

Case Information

  • Case ID: EM-030
  • Patient Name: David Reynolds
  • Age: 55
  • Gender: Male
  • Indigenous Status: Non-Indigenous
  • Year: 2025
  • ICPC-2 Codes: T93 – Endocrine/Metabolic/Nutritional Disease, Other (Vitamin D Deficiency)

Competency Outcomes

Competency DomainCompetency Element
1. Communication and Consultation SkillsExplaining the diagnosis, causes, and importance of vitamin D in bone and general health
2. Clinical Information Gathering and InterpretationTaking a structured history to determine risk factors for deficiency
3. Diagnosis, Decision-Making and ReasoningIdentifying vitamin D deficiency and assessing potential complications
4. Clinical Management and Therapeutic ReasoningDeveloping an appropriate treatment plan with supplementation and lifestyle advice
5. Preventive and Population HealthAddressing risk factors, including sun exposure and dietary intake
6. ProfessionalismAddressing patient concerns and expectations regarding treatment
7. General Practice Systems and Regulatory RequirementsOrdering appropriate investigations under Medicare guidelines
9. Managing UncertaintyRecognising when to investigate for underlying causes
10. Identifying and Managing the Patient with Significant IllnessDetecting and managing complications of chronic vitamin D deficiency

Case Features

  • BMI 32 kg/m² (overweight), minimal exercise.
  • 55-year-old male presenting with generalised fatigue, mild muscle aches, and joint stiffness.
  • Office worker with minimal sun exposure, applies sunscreen daily, and wears long sleeves outdoors.
  • No fractures, but concerned about bone health due to family history of osteoporosis.

Instructions

The candidate is expected to review the following patient record and scenario. The examiner will ask a series of questions based on this information. The candidate has 15 minutes to complete this case.

The approximate time allocation for each question:

  • Question 1: 3 minutes
  • Question 2: 3 minutes
  • Question 3: 3 minutes
  • Question 4: 3 minutes
  • Question 5: 3 minutes

Patient Record Summary

Patient Details

  • Name: David Reynolds
  • Age: 55
  • Gender: Male
  • Indigenous Status: Non-Indigenous

Allergies and Adverse Reactions

  • Nil known allergies

Medications

  • Nil regular medications

Past History

  • No prior fractures or osteoporosis diagnosis
  • No history of chronic kidney or liver disease

Social History

  • Works as a financial consultant, predominantly indoors
  • Minimal sun exposure (avoids direct sunlight due to skin cancer concerns)
  • Diet low in dairy and fatty fish
  • BMI 32 kg/m², does not engage in weight-bearing exercise

Family History

  • Mother diagnosed with osteoporosis at age 65

Vaccination and Preventive Activities

  • Colorectal cancer screening up to date
  • Has never had a bone density scan

Scenario

David Reynolds, a 55-year-old financial consultant, presents with fatigue, mild muscle aches, and joint stiffness over the past 3 months.

He has minimal sun exposure, wears long sleeves and sunscreen, and avoids the sun due to a family history of skin cancer.

His diet is low in vitamin D-rich foods, and he has a family history of osteoporosis.

He is concerned about his bone health and whether he needs supplementation.

On Examination:

  • BMI: 32 kg/m² (overweight)
  • No tenderness over bones or joints
  • Mild proximal muscle weakness
  • No signs of secondary hyperparathyroidism

Initial Investigations Ordered:

  • Vitamin D (25-hydroxyvitamin D): 22 nmol/L (deficient, normal >50 nmol/L)
  • Calcium, phosphate, PTH: Normal
  • ALP: Mildly elevated (consistent with increased bone turnover)

Likely Diagnosis:

  • Vitamin D deficiency due to inadequate sun exposure and dietary intake.

Examiner Only Information

Questions

Q1. How would you explain David’s diagnosis and its underlying cause?

  • Prompt: How do you explain vitamin D deficiency in simple terms?
  • Prompt: What are the key causes in his case?

Q2. What further investigations would you consider and why?

  • Prompt: When would you check bone density (DEXA scan)?
  • Prompt: What blood tests are useful for secondary causes?

Q3. How would you manage David’s vitamin D deficiency?

  • Prompt: What dose and duration of vitamin D supplementation would you prescribe?
  • Prompt: How would you monitor response?

Q4. What lifestyle modifications would you recommend to improve his vitamin D status?

  • Prompt: How much sun exposure is recommended for adequate vitamin D?
  • Prompt: What dietary changes should he make?

Q5. When would you refer David for specialist assessment?

  • Prompt: When is an endocrinology referral needed?
  • Prompt: When would osteoporosis management require a specialist?

THE COMPETENT CANDIDATE

The competent candidate should be able to:


Q1: How would you explain David’s diagnosis and its underlying cause?

The competent candidate should:

  • Explain vitamin D deficiency in simple terms:
    • “Vitamin D is essential for strong bones, muscle function, and immune health. It helps the body absorb calcium, which keeps bones healthy.”
    • “Your vitamin D level is quite low, which may be contributing to your fatigue and muscle aches.”
  • Identify key contributing factors in this case:
    • Minimal sun exposure (indoor work, sun avoidance).
    • Low dietary intake (minimal dairy and fatty fish).
    • Overweight (vitamin D stored in fat, reducing bioavailability).
  • Reassure and discuss the next steps:
    • “This is common, especially in people who spend little time outdoors. Fortunately, we can correct it with supplementation and lifestyle changes.”

Q2: What further investigations would you consider and why?

The competent candidate should:

  • Consider additional blood tests if warranted:
    • Calcium, phosphate, parathyroid hormone (PTH) to assess secondary hyperparathyroidism.
    • Alkaline phosphatase (ALP) as a marker of increased bone turnover.
  • Assess bone health risk:
    • DEXA scan (bone density test) indicated due to his age and family history of osteoporosis.
    • “Since your mother had osteoporosis, it’s important to assess your bone health to prevent fractures in the future.”

Q3: How would you manage David’s vitamin D deficiency?

The competent candidate should:

  • Prescribe appropriate vitamin D supplementation:
    • Cholecalciferol 1,000–2,000 IU daily for maintenance OR 3,000–5,000 IU daily for 6–12 weeks if moderate to severe deficiency.
  • Provide follow-up plan:
    • Recheck vitamin D levels in 3 months.
    • Assess calcium and bone markers if deficiency is persistent.

Q4: What lifestyle modifications would you recommend to improve his vitamin D status?

The competent candidate should:

  • Safe sun exposure guidelines:
    • “Aim for 10-15 minutes of sun exposure to the arms and face before 10 am or after 3 pm, most days of the week.”
    • “If you’re concerned about skin cancer, short sun exposure outside peak UV hours is still beneficial.”
  • Dietary recommendations:
    • Increase vitamin D-rich foods (fatty fish, egg yolks, fortified dairy, and cereals).
    • “Consider a dietitian referral if further guidance is needed.”
  • Encourage weight-bearing exercise:
    • Walking, resistance training, or weightlifting to support bone health.

Q5: When would you refer David for specialist assessment?

The competent candidate should:

  • Endocrinology referral if:
    • Persistent deficiency despite supplementation.
    • Suspected malabsorption (e.g., coeliac disease, chronic liver/kidney disease).
  • Osteoporosis specialist referral if:
    • DEXA scan shows significant bone loss.
    • Fracture risk assessment (FRAX) suggests high risk.

SUMMARY OF A COMPETENT ANSWER

  • Clearly explains vitamin D deficiency and its health impact.
  • Identifies risk factors and orders appropriate investigations.
  • Prescribes evidence-based supplementation with monitoring.
  • Provides lifestyle and dietary recommendations.
  • Recognises when specialist referral is required.

PITFALLS

  • Failing to recognise vitamin D deficiency risk factors.
  • Not considering secondary causes (malabsorption, renal/liver disease).
  • Inadequate supplementation dosing or lack of follow-up.
  • Neglecting bone health assessment in a high-risk patient.

REFERENCES


MARKING

Each competency area is on the following scale from 0 to 3.

☐ Competency NOT demonstrated
☐ Competency NOT CLEARLY demonstrated
☐ Competency SATISFACTORILY demonstrated
☐ Competency FULLY demonstrated

1. Communication and Consultation Skills

1.1 Clearly explains vitamin D deficiency and its impact.

2. Clinical Information Gathering and Interpretation

2.1 Identifies risk factors for deficiency and bone health concerns.

3. Diagnosis, Decision-Making and Reasoning

3.1 Differentiates simple deficiency from more complex causes.

4. Clinical Management and Therapeutic Reasoning

4.1 Provides appropriate supplementation and follow-up plan.

5. Preventive and Population Health

5.2 Advises on sun exposure, diet, and exercise for long-term prevention.

6. Professionalism

6.3 Addresses patient concerns and involves them in decision-making.

7. General Practice Systems and Regulatory Requirements

7.2 Ensures appropriate testing and prescribing within Medicare guidelines.

9. Managing Uncertainty

9.1 Recognises when further assessment or endocrinology referral is needed.

10. Identifying and Managing the Patient with Significant Illness

10.3 Detects osteoporosis risk requiring intervention.

Competency at Fellowship Level

☐ CLEARLY BELOW STANDARD
☐ BELOW EXPECTED STANDARD
☐ BORDERLINE
☐ AT EXPECTED STANDARD
☐ ABOVE STANDARD