Breastfeeding Final Flashcards
What are the benefits of breastfeeding for the baby?
Breastfeeding of infants under 2 years has the greatest potential impact on child survival.
Breastfeeding within the first hour saves 22% of the neonates lifeFew ear infections
Fewer hospitalizations for pneumonia
Reduces the prevalence and morbidity of respiratory illness in infancy
Less risk of dehydration from diarrhea
Lower incidence of enterovirus infection, SIDS
Substantial effective on attentiveness and in reaction
More likely to crawl and walk earlier
Attainment of gross motor milestones
Improved cognitive development
Neural Maturation
Enhances vaccine response
Reduces graft verses host disease in organ transplant
Lower blood pressure
Lower cholesterol
What do formula fed babies have a higher incidence of?
Type 1 and 2 diabetes Celiac disease, ulcerative colitis, Crohn's disease Obesity childhood cancer allergies/asthma Heart disease Obesity
What are the benefits in breastfeeding for mothers?
Reduced cancer risk Lower risk of Type II diabetes Decreased Stress Emotional Health Less postpartum bleeding Lower blood pressure during feeds Weight loss Cheaper child spacing
Describe the skin of the breast?
Thin and flexible
Contains hair, sweat, and oil glands
Describe the areola
Varies in size and color, circular in shape
Color changes during pregnancy, never goes back to pre-pregnant color
What is the purpose of the nerves in the breast?
Proper latch stimulates these nerves to produce milk
What are the Montgomery glands?
Sebaceous glands located around the areola that are pimply in appearance.
Secrete an oily substance that serves as a lubricant and protective agent.
What are the mammary ducts?
The nipple pores. They are the openings of the breast into the nipples. Approximately 4-18 with 0 the average number of openings
How is nipple erection achieved?
Tactile, sensory, or autonomic stimulation
Describe the nipple?
Contain smooth muscle fibers that function as a closing mechanism for the milk ducts. Nipples should protract with stimulation.
Poor protraction is common in first time mothers
28-35% of mothers have poor protraction
Protraction improves with pregnancy and subsequent pregnancies.
What are Cooper ligaments?
Connective tissue that gives breast its shape
What does subcutaneous fatty tissue do?
Gives breast its shape. Size of breast does not affect milk production
Describe the Alveoli/Aveolus
Glands in which milk production takes place that consist of epithelial cells
Capillaries surround the alveoli which bring nutrient-rich blood from which the milk is produced.
They are the milk producing tissue.
Capillaries receive the oxytocin and prolactin and signal alveoli to produce and release milk.
Contract when exposed to oxytocin, resulting in a squeezing effect on the lobule, forcing milk down the ducts.
The alveoli are grouped together, called lobules, and can be compared to grapes, 7-10 per breast.
Describe the ductules
Branches that extend from the alveoli
Sprout and branch during puberty
Transport milk out of the breast through the nipple pores.
What are the three stages of lactation?
Initiation of milk synthesis
Copious milk production
Galactopoisis, establishment of mature milk
What is Stage 1 of lactogenesis?
Initiation of milk synthesis.
Starts at the beginning of the third trimester.
Substances needed for milk synthesis are drawn from the maternal blood stream
What is stage II?
Second day to fifth day postpartum
“Milk comes in”
Colostral phase ends and transitional milk is produced
Blood flow within the breast is increased and milk secretion begins.
What is Stage III?
Stages 3 begins 8-10 days postpartum
Galactopoisis marks the establishment and maintenance of mature milk
You start to see more of a leveling out of supply and demand at that point.
What is involution?
Period after lactogenesis
Decreased size of the breast
Takes about 3 months when accompanied by slow and gradual weaning.
What maternal conditions can delay or impair lactation?
Cesearean Diabetes Labor analgesia Obesity Polycystic ovarian syndrome Theca Lutein cysts Placental retention Stress
What hormones affect lactation?
Estrogen
Progesterone
Prolactin
Oxytocin
How does estrogen impact lactation?
Produced in the ovaries, adrenal glands, and placenta
Growth of mammary ducts and connective tissue between ducts
How does progesterone impact lactation?
Produces in the ovaries and placenta
Aids in the development of milk secreting cells
Inhibits prolactin’s effects during pregnancy
How does prolactin impact lactation?
Levels in blood increase soon after initiation of the sucking stimuli
Deliver of placenta allows for the release of prolactin
Signals the breast to speed up milk synthesis
Serves as a natural tranquilizer and stimulates feelings of restlessness
Sets mother up to interact positively with her baby
Keep levels high by offering unlimited access to breast and breastfeeding at night.
Stimulates milk production
How does oxytocin impact lactation?
Produced in hypothalamus
Travels through nerves fibbers
Infants suckling stimulates nerve endings in the nipple that signal the pituitary to release oxytocin
the blood stream carries oxytocin to the breast where it causes smooth muscle cells to contract
Oxytocin produces cell contract during letdown, called milk ejection reflex
What causes prolactin to increase?
Delivery of placenta and sharp drop of estrogen and progesterone.
What is the process of milk production?
- Estrogen stimulates the growth of mammary ducts and the connective tissue between the ducts
- Progesterone aids in the development of milk secreting cells and inhibits prolactin’s effects during pregnancy
- The alveoli begin producing colostrum in the 4th month of pregnancy. As pregnancy advances colostrum production continues to fill the alveoli
- The high levels of prolactin combined with decreased levels of estrogen and progesterone after the delivery of the placenta signals the alveoli to start producing milk.
- Prolactin levels increase in the blood after the initiation of the sucking stimulus. This signals the breast to speed up milk synthesis.
- The release of oxytocin is triggered by the infants suckling. Milk producing tissue receives the oxytocin and prolactin and signals the alveoli to produce and release milk.
- Oxytocin causes smooth muscle cells to contract which causes the milk ejection reflex, or letdown.
- Ductules trasport milk out of the breast through the mammary ducts, or nipple pores, that open into the nipple.
- Prolactin receptors are laid down when there is a surge of prolactin that is caused by effective breast stimulation.
- Every time a baby nurses, prolactin surges, which establishes prolactin receptores in the alveoli. The more receptors, the more milk that can be put out.
- Receptors are developed in the early days after birth and remain constant thereafter.
- Frequent feeding in the beginning increases sensitivity to prolactin. After this point, control of milk production moves from endocrine to autocrine control.
- Oxytocin causes smooth muscle cells to contract which causes the milk ejection reflex, or letdown.
What signals the alveoli to start producing milk?
The high levels or prolactin combined with decreased levels of estrogen and progesterone
How is colostrum produced?
the alveoli begin producing colostrum in the fourth month of pregnancy.
How much does prolactin increase near term?
20 times the normal value
What causes a surge of prolactin?
effective breast stimulation
What do prolactin surges establish?
Prolactin receptors in the alveoli