title: External method for detection of fetal breathing in utero.
abstract: An ultrasonic technique for detecting fetal breathing in utero has been developed using chronic fetal lamb preparations, and has been used successfully in pregnant women.
mesh_terms: D000818:Animals; D005260:Female; D005318:Fetal Heart / Q000502:physiology; D005323:Fetal Monitoring; D005333:Fetus / Q000502:physiology*; D006801:Humans; D008722:Methods; D011247:Pregnancy; D012119:Respiration; D012756:Sheep; D014463:Ultrasonography