Normal physiologic childbirth

• is characterized by spontaneous onset and progression of labor;

• includes biological and psychological conditions that promote effective labor;

• results in the vaginal birth of the infant and placenta;

• results in physiological blood loss;

• facilitates optimal newborn transition through skin-to-skin contact and keeping the mother and infant together during the postpartum period; and

• supports early initiation of breastfeeding.

The following factors disrupt normal physiologic childbirth:

• induction or augmentation of labor;

• an unsupportive environment, i.e., bright lights, cold room, lack of privacy, multiple providers, lack of supportive companions, etc.;

• time constraints, including those driven by institutional policy and/or staffing;

• nutritional deprivation, e.g., food and drink;

• opiates, regional analgesia, or general anesthesia;

• episiotomy;

• operative vaginal (vacuum, forceps) or abdominal (cesarean) birth;

• immediate cord clamping;

• separation of mother and infant; and/or

• any situation in which the mother feels threatened or unsupported.

• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3647729/

Embryo to birth https://www.youtube.com/watch?v=S-lQOooYAs8