Effects of frequent ultrasound during pregnancy: a randomised controlled trial

@article{Newnham1993EffectsOF,
  title={Effects of frequent ultrasound during pregnancy: a randomised controlled trial},
  author={John P. Newnham and Sharon F. Evans and Con A. Michael and Fiona J. Stanley and Louis I. Landau},
  journal={The Lancet},
  year={1993},
  volume={342},
  pages={887-891}
}
Doppler ultrasound for fetal assessment in high risk pregnancies.
TLDR
The use of Doppler ultrasound in high risk pregnancies appears to improve a number of obstetric care outcomes and appears promising in helping to reducing perinatal deaths.
WITHDRAWN. Doppler ultrasound for fetal assessment in high risk pregnancies.
TLDR
The use of Doppler ultrasound in high risk pregnancies appears to improve a number of obstetric care outcomes and appears promising in helping to reducing perinatal deaths.
Routine ultrasound in late pregnancy (after 24 weeks' gestation).
TLDR
Routine late pregnancy ultrasound in low-risk or unselected populations does not confer benefit on mother or baby and the evidence for the primary outcomes of perinatal mortality, preterm birth less than 37 weeks, induction of labour and caesarean section were assessed to be of moderate or high quality with GRADE software.
Routine doppler ultrasound in pregnancy.
TLDR
Routine Doppler ultrasound examination in low risk or unselected populations did not result in increased antenatal, obstetric and neonatal interventions, and no overall differences were detected for substantive short term clinical outcomes such as perinatal mortality.
Title : Multiple prenatal ultrasound scans and ocular development : 20-year follow-up of a randomised , controlled trial
TLDR
It is found that frequent in utero ultrasound, including B-mode imaging and use of spectral Doppler mode, from 18 weeks’ gestation had no measurable impact on visual outcomes or ocular biometry in adult eye development.
Do Regular Ultrasound Scans Reduce the Incidence of Stillbirth in Women with Apparently Normal Pregnancies?
TLDR
There is no difference in the rate of stillbirth between patients who have more frequent ante-natal ultrasound surveillance compared with those who do not in a low risk population, and the still birth rate was not statistically different.
Screening for intrauterine growth restriction in uncomplicated pregnancies: time for action.
A randomized clinical trial (RCT) noted that sonographic examination in the third trimester, in conjunction with delivery at term for abnormalities of fetal growth, significantly decreased the
Proliferation of prenatal ultrasonography
TLDR
Substantial increases in the use of prenatal ultrasonography over the past decade do not appear to reflect changes in maternal risk, and efforts to promote more appropriate use of pregnancy ultrasound for singleton pregnancies appear warranted.
Utero-placental Doppler ultrasound for improving pregnancy outcome.
TLDR
Present evidence failed to show any benefit to either the baby or the mother when utero-placental Doppler ultrasound was used in the second trimester of pregnancy in pregnant women at high and low risk of hypertensive complications.
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References

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Predictive value of ultrasound measurement in early pregnancy: a randomized controlled trial
TLDR
There were no differences in fetal outcome in the women whose BPD results were known compared with those whose results were withheld from the obstetrician, but a significantly larger number of labours were induced for suspected growth retardation when the gestational age was known.
Possible hazards of imaging and Doppler ultrasound in obstetrics.
TLDR
When considering possible links between ultrasound and childhood cancers or development defects, risk levels cannot be assessed until a large, adequately designed, randomized controlled trial with sufficient follow-up is conducted.
Evaluation of the bioeffects of prenatal ultrasound exposure in the cynomolgus macaque (Macaca fascicularis): III. Developmental and hematologic studies.
The multiple applications of diagnostic ultrasound in obstetrics have resulted in a continued rise in the prenatal population exposed each year. Although human epidemiologic and experimental studies
Evaluation of the bioeffects of prenatal ultrasound exposure in the cynomolgus macaque (Macaca fascicularis): I. Neonatal/infant observations.
The frequency of use of ultrasonography for evaluating the developing embryo/fetus has continued to rise although the possible risks from exposure still remain uncertain. The cynomolgus macaque
Standardization of Sonar Cephalometry and Gestational Age
TLDR
It is suggested that a chart showing the composite mean BPD values of all four studies be used universally for prediction of fetal age, because the mean differences in BPDs derived by the B-scan from four large fetal population studies are not significantly different from zero.
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