Postnatal Mum Flashcards
When is the puerperium considered complete?
First ovulation
Return of normal menstruation
What do most cultural perspectives believe in?
A period of mandated rest.
Nigeria - period of isolation
Muslims - 40 days
Japan - several months rest
Latin America 40 days rest
Postnatal complications
PPH - primary or secondary
Thromboembolism
Sepsis - infection
Mental health disorders
Breast complications - thrush, mastitis, blocked duct.
What physiological changes occur in the postnatal period?
Involution of the uterus and genital tract
Secretion of breastmilk and establishment of lactation
What hormones return to there pre pregnancy state postnatally?
Human placental lactogen
human chorionic gonadotropin
Oestrogen
Progesterone
How long does it take estradiol to return to its normal state?
Within 24 hours decreases to levels less than 2% of pregnancy levels
How long does ostrogen levels take to return to normal?
Return to almost pre pregnant level by 7 days
How long does it take progesterone levels to return to normal?
Levels return to those found in luteal phase of menstrual cycle between 24 - 48 hours.
And follicular phase by 7 days.
How long does it take thyroid hormones to return to normal?
By 4 weeks
When does lactogenesis 1 occur?
Cascade of hormonal changes from early pregnancy to approx day 3, affected by the inhibitory effect of placental hormones.
When does lactogenesis 2 occur?
Occurs from delivery of the placenta and subsequent drop of progesterone, prolactin levels increase prompting milk production.
When does lactogenesis 3 occur?
Around day 10, mature milk supply established and maintained. ‘Galactopoeisis’
How does lactation suppress ovulation?
infant suckling disrupt normal patterns of GnRH from the hypothalamus
Lowering levels of LH and FSH
Regular suckling suppresses LH levels
with decreased lactation frequency, GnRH levels return to ‘normal’ and FSH and LH levels will increase this will lead to ovulation.
Can decrease due to using dummies ‘masking feeding queus’, missing feeds, giving formula between feeds.
What happens to your contractions PN?
During first 24 hours oxytocin stimulates further myometrial contractions causing further retraction.
Can lead to after pains, especially in Multiparous woman.
After pains gradually diminish by 7 days.
oxytocin stimulated by skin to skin, infant feeding and natural hormonal processes.
What is involution?
Decrease in cell size of uterus
return of Myometrium to normal thickness, ischaemia, autolysis and phagocytosis.
Decidua is shed as lochia for endometrial regeneration.
What is ischaemia?
Muscles of uterus contract at end of third stage and constrict blood vessels at placental site to ensure haemostasis.
Uterine blood supply is greatly reduced.
What happens during autolysis?
Breakdown of redundant actin and myosin muscle fibres and cytoplasm by preteolytic enzymes and macrophages
Individual myometrial cells are reduced in size - shorter and thinner.
What happens during phagocytosis?
Excess fibrous and elastic tissue is removed, this is an incomplete process, some elastic tissue remains, doesn’t quite return to nulliparous state.
What are positional changes of the uterus?
Immediately after delivery - feels like a cricket ball 1000g at or below umbilicus
12 hours - relaxed slightly, remains contracted.
In the first week - decreases to 500g
by 2nd week uterus in the pelvis
6th week - 60-80g
Non pregnant uterus 40-50g
What happens to the superficial layer of the decidua?
Granulation tissue, invaded by leukocytes, forms barrier to prevent micro organisms invading remainder of decidua barrier.
Lymphocytes, macrophages, polymorphs.
Becomes necrotic and sloughed away as lochia.
What happens to the basal layer?
Remains intact
Regeneration of endometrium begins at 10 days
Complete by 2-3 wks (except placental site)
What happens to the upper portion of the spongy endometrial layer?
sloughed away when placenta delivers
Remaining reorganised into superficial and basal layers.