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