Sarnat staging
| Sarnat staging | |
|---|---|
| Synonyms | Sarnat Classification |
| Purpose | classification for hypoxic-ischaemic encephalopathy of newborn |
Sarnat staging, Sarnat Classification or the Sarnat Grading Scale is a classification scale for
electroencephalogram findings to provide information about the prognosis for the infant. Mild HIE, according to the scale, usually has a normal outcome, whereas in severe HIE the mortality rate is 75%, and 80% of survivors have neurological sequelae.[2]
UK Resuscitation Council guidelines on newborn life support recommend that a baby who received significant resuscitation at birth and who goes on to show signs of encephalopathy should be assessed by Sarnat Staging between 24 and 48 hours from birth.[3]
Staging
| Grade I Mild | Grade II Moderate | Grade III Severe | |
|---|---|---|---|
| Alertness | Hyperalert | Lethargy | Coma |
| Muscle tone | Normal or increased | Hypotonic | Flaccid |
| Seizures | None | Frequent | Uncommon |
| Pupils | Dilated, reactive | Small, reactive | Variable, fixed |
| Respiration | Regular | Periodic | Apnoea |
| Duration | < 24 Hours | 2 - 14 Days | Weeks |
Adapted from [2]
See also
References
- ^ Sarnat H, Sarnat M. Neonatal encaphalopathy following fetal distress. Arch Neurol. 33:695 - 705. 1976.
- ^ a b Gardiner M, Eisen S, Murphy C. Training in paediatrics: the essential curriculum. Oxford University Press, Oxford 2009.
- ^ Newborn Life Support: Third Edition. Resuscitation Council (UK), London 2011.
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