What’s New in Pulse Oximetry?….. Pulse Oximetry in the NICU October 13, 2010
Posted by admin in : Research/Studies/Education , comments closed
Robert R. Fluck Jr., MS, RRT, FAARC
The first pulse oximeters relied on two measurements: photoplethysmography and spectrophotometry. Photoplethysmography is the use of light to determine the increase in size of a body part, in this case, the index finger is most commonly used. Via alterations in the absorption of infrared light, a graph of how the finger’s size varies over time can be constructed. This graph looks suspiciously like an arterial pressure tracing. Indeed, it resembles that tracing because the finger increases in size during systole.
Operational Evaluation of Pulse Oximetry in NICU Patients with Arterial Access
What's New in Pulse Oximetry?….. Pulse Oximetry in the NICU October 13, 2010
Posted by PeterD in : Education/Studies , comments closed
Robert R. Fluck Jr., MS, RRT, FAARC
The first pulse oximeters relied on two measurements: photoplethysmography and spectrophotometry. Photoplethysmography is the use of light to determine the increase in size of a body part, in this case, the index finger is most commonly used. Via alterations in the absorption of infrared light, a graph of how the finger’s size varies over time can be constructed. This graph looks suspiciously like an arterial pressure tracing. Indeed, it resembles that tracing because the finger increases in size during systole.
Operational Evaluation of Pulse Oximetry in NICU Patients with Arterial Access