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Human fetal breathing movements and gross fetal body movements at weeks 34 to 35 of gestation



Human fetal breathing movements and gross fetal body movements at weeks 34 to 35 of gestation



American Journal of Obstetrics and Gynecology 130(6): 693-699



Human fetal breathing movements in utero at 34 to 35 weeks' gestational age were measured using a real-time ultrasonic scanner. Fetal breathing movements were episodic and occurred 31.8 per cent of the time. Aanalysis of continuous recordings in 10 fetuses from 09:00 to 17:00 hours demonstrated that the percentage of time spent breathing per hour was greater in the afternoon than in the morning. The number of gross fetal body movements was also greater in the afternoon than in the morning. The percentage of time spent breathing was significantly greater during the hour following the noon meal than during the hour preceding the noon meal. It was concluded that real-time ultrasonic scanning permits identification of fetal breathing movements and that between 09:00 and 17:00 hours the character of these movements is related to the time of the day and to the ingestion of food by the mother.

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Accession: 005592020

Download citation: RISBibTeXText

PMID: 637085

DOI: 10.1016/0002-9378(78)90330-7


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