Delton Fingertip Oximeter Manuale di Servizio Pagina 21

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17
English
If the dysfunctional hemoglobin is carboxyhemoglobin or
methemoglobin, the difference between the oxygen saturation value
displayed by the pulse oximeter and the oxygen saturation values
determined by the laboratory instrument will be greater as the
dysfunctional hemoglobin levels rise approximately in accordance
with the following formulas, where:
SpO
2
= 950 determined and numerically
displayed oxygen saturation in
percent
O
2
Hb = Fractional oxyhemoglobin
saturation in percent
COHb =
MetHb =
Carboxyhemoglobin saturation
in percent
Methemoglobin saturation in
percent
SaO
2
= Functional oxygen saturation in
percent
Example 1
Example 2
O
2
Hb = 96 O
2
Hb = 88
COHb = 0.5 COHb = 8
MetHb = 0.6 MetHb = 2
SpO
2
= 97 SpO
2
= 98
SaO
2
= 97.07 SaO
2
= 97.78
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