Final answer:
The dominant childbirth model in Brazil is the Caesarean section, with most women giving birth through this method, far exceeding the global Cesarean rate.
Step-by-step explanation:
In Brazil, the Caesarean section model of childbirth is dominant. Accordingly, most women give birth via Caesarean section, a shift from past decades. The global rate of Cesarean section birth is approximately 21 percent, but in Brazil, it is approximately 55-60 percent.
Initially, breech presentations of infants, which occur in fewer than 5 percent of births, were commonly delivered vaginally. However, since the 1960s, there has been a shift towards the Caesarean method. The process of childbirth involves three stages: cervical dilation, expulsion of the newborn, and delivery of the afterbirth. The Caesarean section is a significant abdominal surgery that can have post-surgical complications for the mother but is deemed necessary in certain situations for the safe delivery of the baby.