PMID: 6403171Mar 26, 1983Paper

Influence of Doppler ultrasound on fetal activity

British Medical Journal
A J MurrillsT Wheeler

Abstract

A randomised and double blind study of 100 subjects and 50 controls was performed to confirm or refute a report from Cardiff in 1975 that continuous Doppler ultrasound, as used in fetal heart rate monitoring, increases fetal movement by over 90%. The results showed such an effect to be most unlikely (power greater than 0.99). A total of 150 pregnant mothers recorded fetal movements for 30 minutes while connected to a specially modified cardiotocograph, the ultrasound being switched on at random for either the first or second 15 minutes in 100 of the patients. The mean difference in 15 minute movement count, with and without ultrasound, among the 100 patients was 0.2 of a movement (SD 12.7; p greater than 0.6 by two tailed Wilcoxon matched pairs signed ranks test). The control group showed a mean difference of 2.6 movements (SD 12.1; p greater than 0.2). Results of a pilot study suggested that the observations in the earlier report may have been influenced by mechanisms unrelated to ultrasound.

References

Jan 1, 1979·Acta Obstetricia Et Gynecologica Scandinavica. Supplement·C Ehrström
Jul 14, 1979·British Medical Journal·W D Phillips, M E Towell
Nov 10, 1979·British Medical Journal·K HertogsS Campbell
Aug 1, 1977·British Journal of Obstetrics and Gynaecology·C WoodP Trigg
Apr 12, 1975·British Medical Journal·H DavidJ F Pearson
Jul 1, 1984·British Journal of Obstetrics and Gynaecology·J D GoodmanG S Dawes
Oct 1, 1980·American Journal of Obstetrics and Gynecology·I ThalerG S Dawes
Sep 15, 1980·American Journal of Obstetrics and Gynecology·W F Rayburn
Nov 15, 1980·British Medical Journal·D G Altman

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Citations

May 1, 1986·European Journal of Obstetrics, Gynecology, and Reproductive Biology·I E Timor-Tritsch
Jan 1, 1997·Ultrasound in Medicine & Biology·S B BarnettK Maeda
Jun 20, 2007·Medical Engineering & Physics·K KałuzyńskiT Pałko
Dec 15, 1993·Early Human Development·P M DugganS B Barnett

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