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Observational Study
Capillary and Venous Lactate Agreement: a pilot prospective observational study.
- Deepankar Datta, Julia Grahamslaw, Alasdair James Gray, and Catriona Graham.
- Emergency Medicine Research Group Edinburgh, Department of Emergency Medicine, Royal Infirmary of Edinburgh, Edinburgh, UK.
- Emerg Med J. 2017 Mar 1; 34 (3): 195-197.
BackgroundBlood lactate is a marker of patient illness severity. Capillary lactate (CAP-LACT) measurement can potentially improve patient screening; however, it has poor evidence of clinical utility.AimWe aimed to investigate agreement between CAP-LACT and peripheral venous lactate (PV-LACT).MethodsWe performed a prospective observational pilot study of 99 patients requiring lactate measurement. Paired CAP-LACT and PV-LACT was recorded. Agreement was determined by Bland-Altman analysis.ResultsBias was 0.2 mmol/L, with 95% limits of agreement from -1.9 to 2.3.ConclusionsCAP-LACT has poor agreement with PV-LACT. Further research is needed to improve its potential clinical utility.Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.
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