@9 months ago with 24 notes
SpO2(%) and PaO2(mmHg) relation.
※ What is an oxygen saturation gap? = the difference between Spo2 (measured by pulse oximetry) and Pao2 (by arterial blood gas (ABG) analyzer) [link] And the causes are…..
- carbon monoxide poisoning (carboxyhemoglobin),
- hydrogen sulfide poisoning (sulfmethemoglobin)
- cyanide poisoning
Both cyanide and CO poisoning are known for causing bright red skin. In both cases oxygen is not being removed from hemoglobin, so arterial blood remains pink and well-saturated.