BCIT- Module 5A| Questions with Correct
Verified Answers
What are the indications of the onset of true labour?
Regular contractions - increase in strength, length, freq
- Increase with walking, continue despite comfort and rest
- felt in low back, radiate to abd
Cervical changes
- cervix moving from posterior to anterior position
- cervix shortening and thinning (effacement)
- cervix dilation
May be accompanied by bloody show + rupture of the membranes
What physiologic changes occur in the mother in preparation for labour?
Increased estrogen - activates uterus
Cervical ripening d/t increase in oxytocin, prostaglandin
Incr inflammation - activates cervix, uterus
Incr uterine oxytocin receptors
Incr central receptors for beta-endorphins (endogenous analgesia)
Incr in mammary and central oxytocin and prolactin receptors - promote breastfeeding,
attachment
What physiologic changes occur in the fetus in preparation for labour and delivery?
Pre-labour: lung maturation, development of oxytocin neuro-protective processes, increase in
epi/norepi receptors (protection from hypoxia)
, In-labour: Preservation of blood supply to brain+heart via catecholamine surge - promotes
newborn breathing, energy+glucose production, and heat regulation
What role does oxytocin play in labour?
Produced by posterior pituitary
Ripens cervix, causes rhythmic contractions, reduces fear+stress and promotes calm, promotes
attachment
Promotes uterine contractions after birth - control PP bleeding
Released during breastfeeding to assist with milk ejection
What role do beta-endorphins play in labour?
Posterior pituitary
Analgesic + adaptive responses to stress and pain
What role do catecholamines play in labour?
Epinephrine, norepinephrine, dopamine
Hypothesis that E/NE inhibits labour when woman is in danger
Elevations in E/NE in late labour support newborn transition
Increase neonatal BP after birth
Responsible for initiation of thermogenesis
What role does cortisol play in labour?
Stress hormone
Promotes contractions, increases central oxytocin effects on maternal adaptations & attachment,
enhances postpartum mood
Verified Answers
What are the indications of the onset of true labour?
Regular contractions - increase in strength, length, freq
- Increase with walking, continue despite comfort and rest
- felt in low back, radiate to abd
Cervical changes
- cervix moving from posterior to anterior position
- cervix shortening and thinning (effacement)
- cervix dilation
May be accompanied by bloody show + rupture of the membranes
What physiologic changes occur in the mother in preparation for labour?
Increased estrogen - activates uterus
Cervical ripening d/t increase in oxytocin, prostaglandin
Incr inflammation - activates cervix, uterus
Incr uterine oxytocin receptors
Incr central receptors for beta-endorphins (endogenous analgesia)
Incr in mammary and central oxytocin and prolactin receptors - promote breastfeeding,
attachment
What physiologic changes occur in the fetus in preparation for labour and delivery?
Pre-labour: lung maturation, development of oxytocin neuro-protective processes, increase in
epi/norepi receptors (protection from hypoxia)
, In-labour: Preservation of blood supply to brain+heart via catecholamine surge - promotes
newborn breathing, energy+glucose production, and heat regulation
What role does oxytocin play in labour?
Produced by posterior pituitary
Ripens cervix, causes rhythmic contractions, reduces fear+stress and promotes calm, promotes
attachment
Promotes uterine contractions after birth - control PP bleeding
Released during breastfeeding to assist with milk ejection
What role do beta-endorphins play in labour?
Posterior pituitary
Analgesic + adaptive responses to stress and pain
What role do catecholamines play in labour?
Epinephrine, norepinephrine, dopamine
Hypothesis that E/NE inhibits labour when woman is in danger
Elevations in E/NE in late labour support newborn transition
Increase neonatal BP after birth
Responsible for initiation of thermogenesis
What role does cortisol play in labour?
Stress hormone
Promotes contractions, increases central oxytocin effects on maternal adaptations & attachment,
enhances postpartum mood
