Doppler assessment of aortic stenosis: a 25-operator study demonstrating why reading the peak velocity is superior to velocity time integral.
- Stefania Sacchi,
- Niti M Dhutia,
- Matthew J Shun-Shin,
- Massoud Zolgharni,
- Nilesh Sutaria,
- Darrel P Francis,
- Graham D Cole
Eur Heart J Cardiovasc Imaging 2018 Jan 15. Epub 2018 Jan 15.
Imperial College London, NHLI-Cardiovascular Science, Du Cane Road, London W12?0NN, UK.
Aims: Measurements with superior reproducibility are useful clinically and research purposes. Previous reproducibility studies of Doppler assessment of aortic stenosis (AS) have compared only a pair of observers and have not explored the mechanism by which disagreement between operators occurs. Using custom-designed software which stored operators' traces, we investigated the reproducibility of peak and velocity time integral (VTI) measurements across a much larger group of operators and explored the mechanisms by which disagreement arose. Read More