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Concerns for the fetus and surveillanceConcerns for the fetus and surveillanceConcerns for the fetus and surveillance 

Concerns for the fetus and surveillanceConcerns for the fetus and surveillanceConcerns for the fetus and surveillance
Chapter:
Concerns for the fetus and surveillance
DOI:
10.1093/med/9780198567301.003.0004
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date: 24 September 2019

Amarnath Bhide, Padma Vankayalapati, and Nicholas Ngeh

Absent fetal movements 96

Abnormal antenatal fetal surveillance tests 100

Although fetal limb and body movements are visible on ultrasound from the 1st trimester, maternal perception starts only after 16–20 weeks of gestation. Typically the fetus demonstrates sleep–wake cycles every 40 minutes, where a period of active movements alternate with a period of quiescence. Towards the end of pregnancy the pattern of fetal movements often changes. Relative reduction in the available space and engagement of the head are some of the factors responsible for this change....

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