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Systematic Reviews
©The Author(s) 2024.
World J Clin Pediatr. Sep 9, 2024; 13(3): 96950
Published online Sep 9, 2024. doi: 10.5409/wjcp.v13.i3.96950
Figure 1
Figure 1  Flow chart of the study.
Figure 2
Figure 2  The Timeline for the discovery and invention of pulse oximetry.
Figure 3
Figure 3 The pulse oximeter idea. The oximeter has a light-emitting diode on one end, and there is a phototransistor on the opposite end of the oximeter. Light-emitting diodes alternately emits red and infrared light, and part of the light will be absorbed after it passes through red blood cells in the blood vessels of the finger.


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