Lead exposure counselling — communication OSCE

Objectives

1. Explain why an elevated screening lead needs venous confirmation. [1]
2. Take a non-judgemental exposure history focused on renovation dust and other sources. [1] [2]
3. Counsel that there is no safe blood lead level and that source removal is the core treatment. [2] [4]
4. Correctly limit claims about chelation and cognition (TLC lesson). [6]

Candidate brief

12-minute station. Caregivers of a well 2-year-old are present. Capillary blood lead is elevated after DIY sanding of old paint. [1]

Expected actions

• Open with partnership: you will help protect learning and stop further exposure. [2]
• Explain capillary versus venous testing in plain language. [1]
• Ask about paint work, dust, water, soil, work clothes, cosmetics/remedies, pica, siblings. [1]
• Advise stopping unsafe sanding; wet cleaning; hand washing; professional hazard control pathways. [2]
• Discuss iron-rich diet support and developmental follow-up without over-medicalising. [1]
• If asked for “detox medicine”: chelation is for selected high levels/severe illness with specialists; it is not proven to restore IQ. [6]
• Teach-back: parents restate tonight’s dust-control plan and the retest plan. [1]

Marking

Pass: non-judgemental history, venous confirmation plan, source-control focus, honest no-safe-level and TLC-limited chelation message. [2] [6]
Fail: shaming; treating capillary as final; promising a safe threshold; offering chelation as cognitive cure; ignoring ongoing renovation dust. [1] [6]