Frequently Asked Questions About Pulse Oximeter

SpO2 is the pulse-oximeter estimate of peripheral arterial oxygen saturation. It is an estimate rather than a standalone diagnosis, and the displayed value can be affected by patient and measurement conditions.

Fingertip models integrate the sensor and display into a compact finger clip. Handheld models typically use an external probe and may add review, storage or data-transfer functions. Tabletop models provide a larger display and may add alarms, review and dual power operation.

Perfusion index, or PI, is a model-specific displayed indicator related to the pulsatile signal at the measurement site. It should be interpreted according to the current device instructions and should not be treated as a standalone clinical diagnosis.

Yes. Motion, weak peripheral perfusion, probe positioning, cold extremities, nail coatings, ambient light and other measurement conditions can affect signal quality or the displayed value. Follow the exact device instructions and verify an unexpected reading.

No. A pulse oximeter estimates oxygen saturation. A single reading should not be used alone to diagnose hypoxemia, determine treatment or override symptoms and professional clinical assessment.

Both are handheld CONTEC pulse oximeters with external-probe capability and SpO2/pulse-rate functions. Their published display, battery, storage and accessory details differ, so compare the individual product pages and confirm the current supplied revision.

CMS5100 is a portable patient monitor that combines SpO2 and pulse-rate monitoring with non-invasive blood pressure in the current IndoSurgicals configuration. Buyers requiring a broader parameter set should also compare the Patient Monitor category.

Do not assume that every model has the same intended-use labeling. Hospital, clinical, home-use and sports or general-wellness claims should be based on the current instructions and regulatory-market configuration for the exact model.

Confirm the exact model and revision, quantity, delivery destination, patient category, probe or sensor, accuracy specification, battery or power requirement, alarm or data-transfer functions, accessories and any inspection, regulatory, conformity, documentation or warranty requirement.