Pulse Oximetry. Dr. Abdul- Monim Batiha Assistant Professor Critical Care Nursing Philadelphia university . Pulse oximetry is a noninvasive monitoring technique used to estimate the measurement of arterial oxygen saturation (Sao2) of hemoglobin.
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Critical Care Nursing
1- Hemoglobin level,
2- Arterial blood flow to vascular bed,
3- Temperature of digit or the area where the oximetry sensor is located,
4- Patient oxygenation ability,
5- Fraction of inspired oxygen (percentage of inspired oxygen),
6- Evidence of ventilation perfusion mismatch,
7- Amount of ambient light seen by the sensor,
8- Venous return at the sensor location.
97% to 99% in a healthy individual on room air.
- The extreme limitations of blood flow
during cardiopulmonary resuscitation
- The pharmacological action of
vasoactive agents administered during
the resuscitation effort
1- Accurate pulse oximetry is not obtainable because of movement artifact.
2- Low perfusion state or excessive edema prevents accurate pulse oximetry measurements.
3- Disagreements occur in Sao2 and oximeter Spo2