Pulse oximeter
EMSA fingertip device reading pulse rate and blood-oxygen saturation.
- Approx. cost
- $15–$80
- Weight
- 1–3 oz
- Used in
- 1 kit
Purpose
Add objective numbers to a patient assessment.
Used in kits
- Volunteer EMS Response Bag
Professional & Field Ops
Alternatives
- Manual pulse check— Always available; gives rate but not saturation.
Maintenance notes
- Fresh batteries; readings mislead with cold, motion, or nail polish.
Buying considerations
- Readings are a data point, not a diagnosis.
- Cold extremities and movement degrade accuracy.
⚠️ Safety notes
- A reading is one data point interpreted within training and context — never treat a number in isolation.
Page history & editing
Revision status: approved Last edited 2026-07-01 by human editor