S12 Vet Monitor User’s Manual
10-7
Concentration of nonfunctional hemoglobin, such as carbonyl hemoglobin
(COHb) and methemoglobin(MetHb);
The presence of certain dyes, such as methylene blue or indigo carmine;
Improper placement or incorrect use of pulse oximeter probe;
Shock, anemia, hypothermia or use of vasoconstrictor drugs, which can cause
blood flow in the arteries to drop to unmeasurable levels.