Variability of expert assessments of ECG time domain parameters
Authors' conclusion
The observed, inter-investigator variability of assessing the PQ and QT intervals, as well as the wave durations, might result in important variance regarding ECG-associated diagnoses.
Study context
- Population
- 26 preselected, distinctive ECG beats from hospital ECG recordings (March 2015), labelled by 18 physicians
- Participants
- 18 physicians
- Outcome
- Variability of clinically relevant ECG wave durations and intervals, expressed as IQR and Q2/Q98 span for 18 investigators
Main finding
As reported in the abstract
Inter-expert variability of wave durations (Pdur, QRSdur, Tdur) and intervals (PQ, QT)
- High variability; Q2/Q98 span ranging from 39 to 99 ms
Observational data: associations, not effects.
Original publication
Variability of expert assessments of ECG time domain parameters. Eur J Anaesthesiol Intensive Care. Published 17 February 2023. doi:10.
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