#Pulse oximeter reading chart skin

are the reasons of poor perfusion.Ĭarbon monoxide poisoning: Carbon monoxide molecules easily replace the oxygen molecules and turn haemoglobin bright red. Peripheral artery diseases, diabetes, obesity, blood clots, etc. Poor perfusion: If the perfusion index is at or below 0.4% showing weak pulse strength, then the oximeter reading can be unreliable. It has soft rubber to shield the probe from light, but when the light shines directly on the probe or the presence of radiated lights such as infrared or ultraviolet enters, it'll impact the reading. Both the user and oximeter should be in a steady position to get the proper result.īright light on the probe: The interference of light on the probe will create an erratic result if it directly reaches the sensor. User's movement- If the person who is using the oximeter has a condition that leads to rapid movement or to shiver or moves being careless while checking, the pulse waveform can fluctuate.

#Pulse oximeter reading chart skin

Henna pigmentation: Henna on the hand represents dark skin pigmentation that absorbs the light at two wavelengths and allows the infrared light to infiltrate. For emergency, put the finger turning sideways. So it's always best to remove nail colours to avoid the confusions. These can work as a hindrance on the way to show the actual oxygenated haemoglobin of a person.

Nail varnish: Nail polish colours contain organic or inorganic pigments that can absorb the light emitted from the oximeter that detects the pulse rate.