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Journal of Tropical Pediatrics 1998 44(1):15-17; doi:10.1093/tropej/44.1.15
© 1998 by Oxford University Press
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Liquid Crystal Thermometry for the Detection of Neonatal Hypothermia in Nepal

N. Manandhar*, M. Ellis**, D. S. Manandhar*, D. Morley** and A. M. de L. Costello**,

*Prasuti Griha Maternity Hospital Kathmandu, Nepal
**Centre for International Child Health, Institute of Child Health London, UK

Correspondence: Dr Anthony Costello, Institute of Child Health, 30 wilford St, London WCIN IEH, UK

We assessed the sensitivity, specificity and likelihood ratio of a low cost liquid crystal strip thermometer (LCT) compared with axillary mercury thermometry for the detection of neonatal hypothermia in Nepal. The subjects were 76 healthy newborns in the government maternity hospital of Kathmandu, Nepal in winter.

The validity of LCT for the detection of neonatal hypothermia (less than 36°C) showed a sensitivity of 83 per cent, specificity 96 per cent, positive predictive value 98 per cent and a likelihood ratio of 23. Use of LCT on newborns in this setting raises a measured pretest probability of first day hypothermia of 63 per cent to a post-test probability of 97 per cent.

Liquid crystal thermometry is a simple, low-cost, and valid method for identifying core hypothermia in newborns. It is ideal for isolated rural communities where LCT strips could be added to delivery kits.


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