What should be included in documentation to ensure traceability of the laser device used?

• A. Device model
• B. Patient's shoe size
• C. Room color
• D. Wind speed near the room

Answer: (A)

Traceability in documentation means you can identify exactly which equipment performed the treatment and when it was used. The device model is the best answer because it specifies which laser unit or type was involved, which is essential for tracing results, QA, and any issues back to the correct machine. The other items don’t provide any link to the equipment or its performance, so they wouldn’t help establish which device was used. In real practice, you’d also record additional identifiers like the device’s serial number and calibration/maintenance dates, but naming the model establishes the key reference to the equipment involved.