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Pulse oximetry in methemoglobinemia
M F Watcha1, M T Connor, A V Hing
1Department of Anesthesiology, Washington University School of Medicine, St Louis, MO.
American Journal of Diseases of Children (1960)
|July 1, 1989
Summary
Pulse oximetry can overestimate oxygen saturation in infants with methemoglobinemia. Direct oxyhemoglobin measurement via cooximetry is crucial for accurate assessment and therapy decisions.
Area of Science:
- Medical Devices
- Clinical Chemistry
- Pediatric Medicine
Background:
- Pulse oximetry is a widely used non-invasive method for assessing oxygenation.
- The technology relies on spectrophotometric principles to estimate oxygen saturation.
- Accuracy can be compromised by the presence of abnormal hemoglobin types.