Multicenter randomized trial exploring effects of simulation-based ultrasound training on obstetricians' diagnostic accuracy: value for experienced operators

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DOI

  • Lisbeth Anita Andreasen, Copenhagen Academy for Medical Education and Simulation, Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
  • ,
  • Ann Tabor, Center of Fetal Medicine and Ultrasound, Department of Obstetrics, Copenhagen University Hospital, Rigshospitalet, Denmark.
  • ,
  • Lone Nikoline Nørgaard, Center of Fetal Medicine and Ultrasound, Department of Obstetrics, Copenhagen University Hospital, Rigshospitalet, Denmark.
  • ,
  • Charlotte Ringsted
  • Puk Sandager
  • Susanne Rosthøj, Department of Public Health, Section of Biostatistics , University of Copenhagen
  • ,
  • Martin Grønnebaek Tolsgaard, Center of Fetal Medicine and Ultrasound, Department of Obstetrics, Copenhagen University Hospital, Rigshospitalet, Denmark.

OBJECTIVE: To explore the effects of simulation-based ultrasound training on the accuracy of fetal weight estimation in the third trimester among obstetricians with different levels of clinical experience.

METHODS: This was a multicenter, randomized pre-post-test practical trial conducted between March 2016 and January 2018. Obstetricians with different levels of clinical experience were randomized to either simulation-based ultrasound training focusing on fetal weight scans or no intervention. Participants completed two scans in pregnant women at term to establish baseline accuracy of fetal weight estimation. Another two scans were performed at follow-up. Accuracy was defined by the percentage difference between estimated fetal weight and actual birth weight. Ultrasound image quality was rated by two expert raters.

RESULTS: Seventy participants with different levels of clinical experience completed the study. Adjusting for clinical experience, the intervention group demonstrated an improvement in measurement accuracy of 31.9% (95% CI, 6.9-50.1%) (P = 0.02), whereas the control group did not improve (relative difference, 13.1% (95% CI, -17.9 to 55.9%); P = 0.45). The change in accuracy was significantly different between the groups (P = 0.02) and independent of clinical experience (P = 0.54). Image-quality scores improved by a mean of 1.2 (95% CI, 0.4-2.1) (P < 0.01) in the intervention group, with no change in the control group (mean difference, 0.1 (95% CI, -0.8 to 1.0); P = 0.78). There was a strong negative correlation between time spent using the simulator and clinical experience (r = -0.70, P = 0.0001).

CONCLUSION: Simulation-based ultrasound training improved accuracy and image quality when performing fetal weight estimation in women at term, independent of obstetricians' clinical experience. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.

OriginalsprogEngelsk
TidsskriftUltrasound in Obstetrics & Gynecology
Vol/bind55
Nummer4
Sider (fra-til)523-529
Antal sider7
ISSN0960-7692
DOI
StatusUdgivet - apr. 2020

    Forskningsområder

  • Obstetrics, Simulation based training, fetal weight estimation, obstetric ultrasound

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