Id |
Subject |
Object |
Predicate |
Lexical cue |
T221 |
0-199 |
Sentence |
denotes |
Knowledge of MetHb and COHb levels in the blood of COVID-19 patients is also relevant to prevent misinterpretations of arterial oxygen saturation values measured with fingertip pulse oximetry (SpO2). |
T222 |
200-270 |
Sentence |
denotes |
This is because MetHb and COHb interfere with the measurement of SpO2. |
T223 |
271-339 |
Sentence |
denotes |
An overestimation of the true arterial oxygenation (SaO2) can occur. |
T224 |
340-496 |
Sentence |
denotes |
In case of a decrease in SaO2 and an increase in MetHb or COHb, SpO2 will diverge more from SaO2 the higher the MetHb and COHb concentration (see Figure 4). |
T225 |
497-799 |
Sentence |
denotes |
For example, assuming a MetHb concentration of around 25% (corresponding to the upper end of the confidence interval of MetHb values in COVID-19 patients reported by Alamdari et al. [21]) and an assumed decrease of SaO2 to 75%, the SpO2 measurements would indicate a falsely too high SpO2 of about 88%. |
T226 |
800-1000 |
Sentence |
denotes |
Measurement with pulse CO-oximetry instead of pulse oximetry would circumvent this problem since pulse CO-oximetry is able to non-invasively measure MetHb, COHb, tHb, and the correct SpO2. [83,84,85]. |