Physiologic labor and birth

Physiologic labor and birth refer to the natural process of childbirth. Physiologic birth is distinct from other forms of childbirth in that it takes place entirely without medical interventions like surgical procedures or the administration of pain medication and is immediately followed by skin-to-skin contact and breastfeeding. Although some women and fetuses may develop complications requiring extra medical intervention, physiologic birth is generally a safe and healthy process that can help to ensure the best possible outcomes for mother and child alike, even when complications arise. As a result, advocates of physiologic birth contend that natural childbirth is ideal and should be supported and encouraged over any other form of delivery. Such advocates also typically argue that prenatal interventions and various technological and pharmaceutical interventions are overused in most modern deliveries and often present challenges that can be avoided through physiologic labor and birth.

Background

The process of physiologic childbirth can begin hours, days, or even weeks before the onset of labor. There are a number of signs that commonly indicate the approaching onset of labor. One of the earliest of these signs is lightening. Lightening occurs when the baby’s head drops down into the mother’s pelvis in anticipation of delivery. It can happen anywhere from a few hours to a few weeks before labor begins. Another early sign is the discharge of the mucus plug that seals off the womb and prevents infection. In most cases, this happens within days of the onset of labor. Some expectant mothers may also experience diarrhea as labor approaches. One of the most recognizable signs of the onset of labor is the rupturing of the membranes of the amniotic sac that surrounds and protects the fetus when it is inside the womb. When this happens, the fluids inside the amniotic sac begin flowing or leaking out of the woman’s vagina. A common sign of the imminent onset of labor is the beginning of uterine contractions that become regular and closer together. The closer together these contractions occur, the closer labor is to starting.

Labor itself occurs in three stages: the first stage, the second stage, and the third stage. The latent, active, and transition phases belong to the first stage. The latent phase is the first and longest of the three phases. During the latent phase, the increasing frequency of contractions helps to dilate the cervix so that the baby can pass through the birth canal. Ultimately, the cervix dilates to ten centimeters. Contractions continue until the cervix reaches full dilation. There is no definitive timeframe for how long this may take.

The active phase ends when the cervix reaches full dilation. Once full dilation is achieved, the second stage begins, and the doctor will instruct the woman to begin pushing. This, along with the force of continued contractions, pushes the baby out of the womb and through the birth canal. Under normal circumstances, the baby will begin passing through the vaginal opening headfirst. Once the baby has fully emerged from the vaginal opening, the umbilical cord is usually clamped and cut after a brief delay, unless immediate care is needed.

The final stage of labor is the third stage. The third stage is primarily concerned with the delivery of the placenta. The placenta is a flat, round organ that forms in the womb during pregnancy and supplies the fetus with nourishment through the umbilical cord. Delivery of the placenta typically takes between ten and thirty minutes.

Overview

Physiologic birth is defined based on the characteristics of the birthing process from labor to postpartum care. The course of physiologic birth begins with the natural, spontaneous onset of labor and occurs with the ideal biological and psychological conditions that support effective labor. Physiologic birth also specifically results in the vaginal birth of the baby and the passing of the placenta, as well as a certain amount of blood loss. After delivery, physiologic birth involves the newborn’s transition through skin-to-skin contact between mother and child during the postpartum period. Finally, physiologic birth includes the rapid initiation of breastfeeding.

True physiologic birth can be disrupted in a variety of ways. It can be disrupted from the start if labor is induced or augmented artificially. Environmental factors such as harsh lighting, uncomfortable room temperature, nutritional deprivation, lack of privacy, lack of support, or the existence of time constraints can also disrupt physiologic birth. Certain interventions undertaken during the birthing process can disrupt physiologic birth as well. These potential interventions typically include the administration of certain opiate-based drugs and the use of local or general anesthesia. Episiotomy, which is a simple procedure in which the doctor makes a small surgical cut at the vaginal opening to aid delivery, is also considered disruptive to physiologic birth. The same is true of the use of forceps or a vacuum during delivery. Once the baby is delivered, physiologic birth can still be disrupted by immediate cord clamping or separation of mother and child. It should also be noted that birth by cesarean section circumvents physiologic birth altogether.

Physiologic birth has a number of potential benefits for both mother and child. For mothers, physiologic birth can minimize postpartum pain and may reduce some surgical risks associated with cesarean birth. It may also contribute to a quicker recovery period, elevated self-esteem, a lower likelihood of postpartum depression, and a better attachment between mother and child. In addition, physiologic birth may reduce exposure to some intervention-related harms and support earlier skin-to-skin contact and breastfeeding.

The benefits of physiologic birth are not limited to mother and child. It also has potential benefits for obstetricians, midwives, nurses, and administrators. For obstetricians, midwives, and nurses, physiologic birth can lead to increased professional satisfaction, improved job performance on measures tied to compensation, and a reduced chance of being held liable for adverse events that can occur due to complications during the birthing process. For administrators, physiologic birth may reduce some of the added costs associated with medical interventions during childbirth.

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