Cyanosis
Last updated: Friday, 26, November, 2010
| Causes | Appropriate Tests |
|---|---|
| Initial clinical assessment; pathology tests as appropriate. | |
| Peripheral cyanosis | |
Reduced peripheral perfusion | |
| Central cyanosis | Blood gases, co-oximetry, FBC, blood film. |
Respiratory failure | |
Right to left shunts | |
| |
Methaemoglobinaemia | Methaemoglobin, sulphaemoglobin; Heinz body preparation |
| |
| |
| Identification of haemoglobin M including haemoglobin electrophoresis. Further investigation - specialised laboratory. |
Sulphaemoglobinaemia | See Methaemoglobinaemia, above. |
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