Notes on Childbirth and the Neonate

Childhood and Adolescence: Birth and the Newborn Study Notes

Chapter Overview

  • This chapter focuses on various aspects of childbirth, neonatal characteristics, postpartum period, and problems related to birth.

Learning Objectives

  • Part 1

    • Explain Braxton-Hicks contractions and how the fetus may initiate the labor process.
    • Describe the three stages of childbirth and significant characteristics of each.
    • Compare and contrast various methods of childbirth.
    • Describe common birth problems and indicators and consequences of prematurity.

  • Part 2

    • Describe the postpartum period, including postpartum blues and postpartum mood disorders.
    • Summarize neonatal characteristics and methods of assessment.
    • Discuss causes and risk factors for Sudden Infant Death Syndrome (SIDS) and ways to reduce its occurrence.

Truth or Fiction

  • Part 1

    • The fetus signals the mother when ready to be born.
    • Babies are held upside down and slapped to stimulate independent breathing.
    • The umbilical cord cutting technique affects the belly button appearance.

  • Part 2

    • Lamaze method leads to pain-free childbirth (fiction).
    • Nearly 30% of births in the U.S. are cesarean sections.
    • Abnormal to feel depressed postpartum (fiction).

  • Part 3

    • Extended early contact is necessary for bonding (fiction).
    • SIDS results in more deaths than cancer, heart disease, etc.

Events Before Childbirth Begins

  • Dropping or Lightening: The fetus's head settles in the pelvis before labor begins.
  • Braxton-Hicks contractions: First uterine contractions experienced as early as the 6th month; not true labor.
  • Blood Spotting: Occurs a day before labor.
  • Amniotic Fluid Rush: Happens in 1 in 10 women at the onset of labor.
  • Hormonal Changes: Placenta and uterus secrete prostaglandins which cause uterine contractions; oxytocin is released as labor progresses to stimulate strong contractions.

Stages of Childbirth

First Stage
  • Uterine contractions begin, effacing and dilating the cervix.
  • Duration ranges from a few hours to over a day.
  • Contractions increase in strength, frequency, and regularity.
  • Mother may be prepped (e.g., pubic shaving, enema).
  • Fetal Monitoring: Measures fetal heart rate and mother's contractions. Tools such as forceps or vacuum extraction may be used if necessary.
  • Transition: Final phase of the first stage, about 30 minutes; the cervix is nearly fully dilated, and contractions are frequent and strong.
Second Stage
  • Begins when the baby’s head crowns; ends with the baby’s birth.
  • An episiotomy may be performed controversially after crowning.
  • Once the head emerges, mucus is suctioned from the baby’s mouth to clear airways.
  • The umbilical cord is clamped and severed, followed by newborn care actions such as footprinting, ID bracelet application, eye treatment, and Vitamin K injection.
Third Stage
  • Known as the placenta stage; persists for minutes to an hour or more.
  • Placenta separates from the uterus and is expelled, and any episiotomy is closed with stitches.

Methods of Childbirth

Anesthesia During Childbirth
  • General Anesthesia: Causes the mother to sleep; impacts infant's immediate post-birth behavior negatively (e.g., restlessness).
  • Local Anesthetics: Provide pain relief without inducing sleep; minor impacts on neonates.
  • Natural Childbirth: No anesthesia used.
Alternative Methods
  • HypnoBirthing: Focuses on relaxation and prepares associations to lessen fear and pain.
  • Biofeedback: Provides feedback on muscle tension and blood pressure during labor.
  • Lamaze Method: Teaches breathing and relaxation to lessen pain and promote comfort during childbirth.
  • C-section: Required for cases of maternal pelvic inadequacy, fatigue, fetal size, distress, or improper presentation.
Home Birth
  • Suitable for healthy women with minimal risks and previous birth experiences.
  • Midwives assess risks and must ensure access to emergency care if needed.

Birth Problems

Effects of Oxygen Deprivation
  • Anoxia and Hypoxia: Conditions of oxygen deprivation at birth.
  • Prenatal deprivation can lead to central nervous system development impairment, causing cognitive, motor, and psychological disorders later.
  • Neonatal oxygen deprivation may predict memory and learning issues and health problems including schizophrenia and cerebral palsy.
Low Birth Weight and Prematurity
  • Definitions:
    • Premature: Born before 37 weeks of gestation.
    • Low Birth Weight: Weighing less than 5.5 pounds; small for date if full-term but low-weight.
  • Outcomes: High risks for infant mortality with correlation; developmental delays; premature infants often present with immature physical features and respiratory distress syndrome.
Treatment for Preterm Infants
  • Preterm infants typically require incubators for temperature regulation and infection control.
  • Parents need to provide responsive care to help better outcomes.
  • Interventions: Techniques like kangaroo care and massage have been shown to facilitate better weight gain and reduced respiratory issues.

Postpartum Period

Psychological Challenges
  • Baby Blues: Transient mood disturbances lasting about 10 days, do not impair functionality.
  • Postpartum Depression (PPD): Affects up to 10-20% of women, may develop weeks after delivery; can be severe and cause psychotic features in rare cases.

Parental Interaction and Attachment

  • Bonding forms during early parent-child interactions; early contact does not solely determine bonding outcomes.
  • Emotional investment plays a significant role in attachment development.
Fathers’ Involvement
  • Bonding is influenced by fathers spending time and their relationship quality with the mother.

Assessment of Neonates

Health Assessment Methods
  • Apgar Scoring: Assesses five health signs; scores of 7 or above indicate no danger; below 4 is critical.
  • Brazelton Neonatal Behavioral Assessment: Evaluates reflexes and behaviors important for health outcomes.
  • Neurobehavioral Assessment: Assesses at-risk infants in NICU to understand potential developmental issues.
Neonatal Reflexes
  • Rooting Reflex: Baby turns head toward stroking stimulus near mouth; essential for breastfeeding.
  • Sucking Reflex: Babies suck any object on their lips, transitioning to voluntary sucking later.
  • Moro Reflex: A startle reflex elicited by sudden changes/stimulation causing limbs to extend and retract.
  • Grasping Reflex: Babies grasp objects placed in their palms, diminishing around 3-4 months.
  • Stepping Reflex: Mimicking walking movements when held upright, typically vanishing by 3-4 months.
  • Babinski Reflex: Toes fan out when the foot is stroked, disappearing by the end of the first year.
Sensory Development
  • Vision: Limited acuity at birth (20/600); prefer objects within 7-9 inches; minimal color discrimination at under 1 month.
  • Hearing: Neonates show preferences towards familiar voices, particularly maternal.
  • Smell and Taste: Developed at birth; preferences for sweet tastes and can distinguish noxious scents.
  • Touch and Pain: Responsive to touch, capable of associative distress with previous painful stimuli.
Learning Capacity
  • Classical Conditioning: Involves involuntary responses conditioned to novel stimuli.
  • Operant Conditioning: Modifies reflex behaviors through reinforcements.
Sleep Patterns
  • Neonates sleep approximately 16 hours daily with six cycles of waking and sleep patterns throughout the day. REM sleep constitutes 50% of their sleep initially.

SIDS (Sudden Infant Death Syndrome)

Overview
  • Also known as crib death; most common between 2-4 months; more prevalent in infants sleeping on their stomachs.
  • Uncertain causes but risk factors include prematurity, sleep position, socioeconomic status, and maternal health behaviors during pregnancy.