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Detailed USS - Anomaly Scan

Looks in detail at bones, heart, brain, spinal cord, face, kidneys and abdomen

Looking for conditions such as: Anencephaly, open spina bifida, cleft lip, diaphragmatic hernia, gastroschisis, exomphalos, serious cardiac abnormalities, serios cardiac abnormaliies, bilateral renal agenesis amongst many more.

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Lungs begin to produce surfactant

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Baby's eyes open partially

CNS can direct rhythmic breathing movements and control body temperature

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Baby is able to kick, strech and making grasping movements

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Rapid weight gain - major development has nearly finsihed

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Baby practices breathing

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Baby's eyes open wide

Red blood cells are forming in the bone marrow

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Baby begins to turn head down and descend into the pelvis

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Baby is able to detect light and photopupillary reflex is present

Bones are hardening (except for the skull)

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Regular uterine contractions and cervical effacement

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Contractions of the smooth muscle lead to the progessive shortening of the cervix, leads to rapid effacement and dilation

Contraction - Retraction

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Cervix fully dilates to 10cm.

Transition from the cervix opening to the body getting ready to push

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Begins when the cervix is fully dilated. Baby is making its way down the birth canal

Passage through the birth canal:
- At the pelvic inlet - transverse diameter is widest so head is turned towards mums side
- Occiput hits the pelvic floor causing flexion of the head
- At pelvic outlet baby rotate into an A-P position
- Crowning of the head
- Shoulders hit the pelvic floor and must turn into the A-P position
- Anterior shoulder born first followed by posteriro

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The expulsion of the membranes and placenta. Can be either:

Active --> Injection of syntometrine (oxytocin and ergometrine) to induce a large contraction

Physiological --> Lets the body deliver the placenta naturally