Version May 2024
| Problem and potential errors | Solution |
| Inadequate waveform | |
| Malposition of probe | Reposition probe, alternate site |
| Motion artifact | Reposition probe, alternate site |
| Hypoperfusion | Reposition probe, alternate site, warming |
| Hypothermia | Use ear or forehead probe, warming |
| Skin pigment | Measure ABG |
| Falsely normal or elevated oximetry reading | |
| Carboxyhemoglobin (eg, carbon monoxide poisoning) | Co-oximetry |
| High levels of glycohemoglobin A1c | Measure ABG |
| metHb, sulfHb* | Multiwavelength co-oximetry (metHb), biochemical analysis (sulfHb) |
| Ambient light | Remove ambient light source |
| Skin pigment | Measure ABG |
| Falsely low oximetry reading | |
| Inadequate waveform | Reposition probe, alternate site |
| metHb* | Multiwavelength co-oximetry |
| sulfHb* | Biochemical analysis |
| HbS and inherited forms of abnormal Hb | Measure HbS and abnormal Hb levels |
| Severe anemia | Measure ABG |
| Venous pulsations or congestion | Loosen probe, reposition patient or probe, measure ABG |
| Ambient light | Remove ambient light source |
| Nail polish | Remove polish or change site |
| Vital dyes | Usually transient, measure ABG |
ABG: arterial blood gas; metHb: methemoglobin; sulfHb: sulfhemoglobin; HbS: sickle hemoglobin; Hb: hemoglobin; SpO2: peripheral arterial oxygen saturation; SaO2: true arterial oxygen saturation.
* In these conditions, SpO2 is low; when levels of metHb or sulfHb are mildly elevated, SpO2 underestimates the SaO2, but when levels are high, the SpO2 automatically trends towards 85% such that pulse oximetry can overestimate SaO2.آیا می خواهید مدیلیب را به صفحه اصلی خود اضافه کنید؟
