This tool was developed by the Monitoring and Diagnosis Group at the University of Oxford (Madox) as part of a systematic review into the normal variation of heart rate and respiratory rate in children from birth to 18 years.
Lancet 2011; 377: 1011-1018
This research resulted in the production of centile charts for both heart rate and respiratory rate in childhood, which differ considerably from existing reference ranges.
Disclaimer
The App, online calculator and downloadable poster include calculations that should be checked and confirmed by the user. Please note that any tool available on www.madox.org is not suitable for clinical decisions nor is it intended to replace clinical judgment. Users should always confirm any results by hand or other means necessary, referring back to any original publications, (Lancet 2011; 377: 1011-1018), before making clinical decisions.