Please use this video link:
https://www.youtube.com/watch?v=05nh5p5ULtg

This lesson explores the critical transition from fetus to newborn, with a focus on respiratory initiation, cardiovascular adaptation, and the importance of optimal cord clamping.

Key physiological processes include:

• Trigeminal nerve activation: The 5th cranial nerve senses atmospheric pressure and chemical composition upon birth, signaling the start of neonatal transition.

• Heart Shunt Closure: Spontaneous closure of the ductus arteriosus and foramen ovale initiates pulmonary circulation, shifting blood flow from fetal (8%) to neonatal (55%) lung perfusion.

• Pulmonary Circulation Onset: Capillary erection in the lungs allows absorption of fetal lung fluid into vascular circulation, increasing blood volume and preparing for respiration.

• Role of the Lymphatic System: Assists in fluid removal and is stimulated by skin-to-skin contact and breastfeeding, further promoting neonatal adaptation.

• Placental Transfusion: Particularly critical for waterbirths and breech presentations; full-body emergence and exposure to air triggers the final transition.

• Optimal Cord Clamping: Delaying clamping by at least 3–5 minutes allows for placental transfusion, improving lung compliance, increasing hemoglobin and ferritin levels, and enhancing long-term neurodevelopment.

• Risk of Early Clamping: Can compromise perfusion, increase risk of anemia, and reduce brain myelination in critical regions.

The lesson also emphasizes the physiological basis for #WaitForWhite and includes two waterbirth videos that visually demonstrate these processes.