Contactless respiratory and heart rate monitoring: validation of an innovative tool

J Med Eng Technol. Oct-Nov 2010;34(7-8):393-8. doi: 10.3109/03091902.2010.503308. Epub 2010 Aug 10.


Primary objective: To assess the accuracy of the EverOn™ piezoelectric sensor based contactless heart rate and respiration rate monitoring system.

Methods: Measurements of the EverOn™ and reference devices were performed in a sleep lab and an intensive care unit (ICU) setting. One minute measurements by both the reference device and the EverOn™ were averaged and compared. Accuracy was defined in accordance with industry criteria.

Results: Respiration rate (RR) accuracy in the 41 children and 16 adults evaluated in the sleep lab was 93.1% and 90.6% respectively, and heart rate (HR) accuracy was 94.4% and 91.5% respectively. For the 42 ICU patients RR accuracy was 82.0% and 75% (versus end-tidal CO(2) and manual respectively), while accuracy of HR was 94.0%. The EverOn™ was found to be superior to the impedance technique in measuring RR.

Conclusions: The system described was found to be accurate in accordance with regulatory and industry criteria.

Publication types

  • Comparative Study

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Body Mass Index
  • Female
  • Heart Rate*
  • Humans
  • Intensive Care Units
  • Linear Models
  • Male
  • Middle Aged
  • Monitoring, Physiologic* / instrumentation
  • Monitoring, Physiologic* / methods
  • Polysomnography
  • Reproducibility of Results
  • Respiratory Rate*