Key result
Recent advances in pulse oximetry, including extended waveform analysis and multiwavelength technology, have expanded its clinical applications to include hemodynamic management and dyshemoglobin detection.
Recent technological advances in pulse oximetry expand its clinical utility beyond basic oxygen saturation and pulse rate monitoring.
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Advances in multi-wavelength oximetry may improve dyshemoglobin detection; leaves open prospective validation before routine adoption.
Conventional pulse oximetry uses two wavelengths of light (red and infrared) transmitted through a finger and a photodetector to analyze arterial hemoglobin oxygen saturation and pulse rate. Recent advances in pulse oximetry include: extended analysis of the photo plethysmographic waveform; use of multiple wavelengths of light to quantify methemoglobin, carboxyhemoglobin and total hemoglobin content in blood; and use of electronic processes to improve pulse oximeter signal processing during conditions of low signal-to-noise ratio. These advances have opened new clinical applications for pulse oximeters that will have an impact on patient monitoring and management.
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Cannesson et al. (2009) reported a review. Pulse oximetry was evaluated. Recent advances in pulse oximetry, including extended waveform analysis and multiwavelength technology, have expanded its clinical applications to include hemodynamic management and dyshemoglobin detection.
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