Pulse Oximetry
Noninvasive optical monitoring of arterial oxygen saturation and pulse using photoplethysmography.
Core metadata
- ID: pulse_oximetry
- Era: Modern
- First known date: 1972 (exact)
- Region: Tokyo, Japan, Nihon Kohden
- Review status: source_checked
- Maturity: established
Prerequisites
- Digital Signal Processing (DSP) (digital_signal_processing)
- Early Optics (early_optics)
- Clinical Medicine (medicine_clinical)
Dependents
- None.
Fields
Field lanes
- Medical Imaging & Diagnostics: Monitoring
Node sources
- Pulse Oximeters and Oxygen Concentrators (U.S. Food and Drug Administration, 2026, official_agency) • Supports: node, maturity
- Ninety years of pulse oximetry: history, current status, and outlook (PMC / Journal of Biomedical Optics, 2024, review) • Supports: node, maturity, edge
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 3
- Average edge confidence: 73%
- Prerequisite sources: 5
- expert_inference: 2
- review: 1
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Early Optics (early_optics) | historical_predecessor | 82% | review | Pulse oximetry depends on optical absorption measurements in red and infrared wavelengths; efficient blue/white LED lighting is a later technology and not a prerequisite. |
|
| Clinical Medicine (medicine_clinical) | enabling | 68% | expert_inference | Clinical Medicine provides a capability that enables this technology without being the only possible path. |
|
| Digital Signal Processing (DSP) (digital_signal_processing) | enabling | 68% | expert_inference | Digital Signal Processing (DSP) provides a capability that enables this technology without being the only possible path. |
|
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