oxygen saturation Flashcards
explain pulse oximetry
-painless, non-invasive measurement of a persons oxygen saturation, levels of oxygen bound to haemoglobin in red blood cells
why is oxygen saturation important
-assessing respiratory function
-early detection of hypoxemia
-monitoring chronic conditions
-during and after surgery
-in critical care
-covid 19 management
-preventing complications
-medication and oxygen therapy
what can affect the accuracy of pulse oximetry
-using probes not intended for specified body part
-shivering
-poor peripheral blood flow
-cardiac arhytmia
-nail varnish/false nail/henna
-carbon monoxide poisoning
-bright overhead lights
o2 saturations of healthy individual
-95-100%
o2 saturations of acutely unwell adult
-94-98%
o2 saturations of those at risk for type 2 hypercapnic respiratory failure
-88-92%