Noninvasive monitoring of oxygenation has become a standard procedure in neonatology.
Pulse oximetry (SpO2) is based on using the pulsatile variations in optical density of tissues in the red and infrared wavelengths to compute arterial oxygen saturation without the need for calibration.
The method was invented in 1972 by Takuo Aoyagi, and its clinical usage was first reported in 1975 by Susumu Nakajima, a surgeon, and his associates.
Advantages of SpO 2
Saturation is a basic physiologic determinant of tissue oxygen delivery.
Noninvasive, and provides immediate and continuous readouts.
No warm-up or equilibration time is needed.
Can detect rapid or transient changes in oxygen saturation.
Skin burns from oximeter probe are very rare compared to transcutaneous monitoring.
Minimal effect of motion, light, perfusion, and temperature with the advent of “Signal Extraction Technology.”
Substantially lower maintenance.
KeywordsPulse Oximetry Pulse Oximeter Neonatal Jaundice Fractional Saturation Tissue Oxygen Delivery
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