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Am J Obstet Gynecol. 2010 Apr;202(4):400.e1-5. doi: 10.1016/j.ajog.2009.10.881. Epub 2009 Dec 29.

The effect of live and web-based education on the accuracy of blood-loss estimation in simulated obstetric scenarios.

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  • 1Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.



Visual estimation of blood loss has been shown to be inaccurate. The objective of this study was to evaluate the impact of a didactic training program on the accuracy of the estimation of blood loss and to compare the effectiveness of training provided by a web-based vs live session.


Multidisciplinary labor and delivery unit personnel participated in live or web-based training. Both sessions comprised a 5-station pretest and posttest. The primary outcome was the accuracy of estimated blood loss in the pretest compared with the posttest with the use of the Mann-Whitney U test.


Among 372 providers, the median improvement between pre- and posttest results was 34% (95% confidence interval, 10-57%; P < .001). This improvement did not differ significantly between the live sessions and web-based sessions (4%; 95% confidence interval, -10% to 12%).


Our study supports the use of live or web-based training to improve blood loss estimation accuracy.

Copyright 2010 Mosby, Inc. All rights reserved.

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