The use of ultrasound for monitoring foetal breathing movements.
D004452:Echocardiography; D004582:Electronics, Medical; D005260:Female; D005333:Fetus / Q000502:physiology*; D006801:Humans; D008991:Monitoring, Physiologic; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D011674:Pulse; D012119:Respiration; D013909:Thorax / Q000502:physiology*; D014159:Transducers; D014465:Ultrasonics; D014599:Uterus / Q000502:physiology