Ultrasonic monitoring of fetal respiratory movement.Br Med J 1976; 1 doi: http://dx.doi.org/10.1136/bmj.1.6023.1434 (Published 12 June 1976) Cite this as: Br Med J 1976;1:1434
- R N Tremewan,
- D R Aickin,
- J J Tait
Ultrasonic monitoring of fetal respiratory movement including velocity measurements is described. Both proximal and distal walls of the fetal chest are imaged simultaneously. The time-position mode clearly defines fetal respiratory movement and rejects artefacts.