Valerie,
Henci is away until the end of the month, so I thought I'd take this one on. I'm glad you're researching Lamaze. For general information you should check out
the history of Lamaze International and follow the links to the Lamaze Philosophy and "Lamaze for the 21st Century".
During a contraction, the baby encounters the pelvic floor and rotates to negotiate through the bones of the pelvis. Blood flow continues through the umbilical cord despite being squeezed due to wharton's jelly, a gelatenous substance that cushions the blood vessels. But if the vessels themselves are squeezed, a healthy baby has plenty of reserves to cope with brief interruptions of blood flow. This is why there is time between contractions! During pushing, the baby's head might mold (the bones of the skull can move and change shape to fit through the pelvis). Also, the fluid filled lungs are getting squeezed to remove the fluid and mucous that takes up the lung space and make room for the baby's first breath of air. This is an important step and will prevent respiratory problems after the birth.
At the moment of birth, many anatomic and physiologic changes occur quickly to help the baby adapt to life outside the womb. Early, continuous skin-to-skin contact and frequent breastfeeding help this transition go more smoothly.
I refer you to our
care practice papers to learn more about how interventions in labor and birth can disrupt this normal, physiologic process. Lamaze is a philosophy more than a "technique." We promote normal birth and evidence based maternity care. We support non-intervention in the normal process of labor and birth.
I hope this helps. Good luck with your paper!
Sincerely,
Amy Romano, MSN, CNM
Editor, Lamaze Institute for Normal Birth By: Amy Romano