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Transcript of Ho c6 c7 120912 90m breastfeeding behavior frequency wna
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A Neurobehavioral Approach to Breastfeeding
Dr Nils Bergman”M.D., D.C.H., M.P.H., Ph.D.”
Cape Town, South Africa
www.kangaroomothercare.com
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BIRTH
S S C
Breastfeeding behaviour
Breastfeeding WIRING
BREASTFEEDING
SENSORY BRAINstimulation nutrition
STATE organization
Feeding frequency
SLEEP cycling
ON-GOING
S S C
BRAIN
WIRING
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THE “OLD” BRAIN HAS
3 PROGRAMMES
DEFENCE NUTRITION REPRODUCTION
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DEFENCE NUTRITION REPRODUCTION
HORMONES NERVES MUSCLES
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The neurobehaviouralprogrammes originate in the
LIMBIC SYSTEM
Expressed through hypothalamus NEURO
(autonomic nervous system)hypophysis ENDOCRINE
(endocrine system, hormones)cerebellum etc BEHAVIOR
(somatic system)
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DEFENCE NUTRITION REPRODUCTION
HORMONES NERVES MUSCLES
endocrine autonomic NS somatic
HIGHLY CONSERVED NEURO-ENDOCRINE
BEHAVIOR
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DEFENCE NUTRITION REPRODUCTION
HORMONES NERVES MUSCLES
HIGHLY CONSERVED NEURO-ENDOCRINE
BEHAVIOR
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REPRODUCTIONNUTRITIONDEFENCE
HORMONES NERVES MUSCLES
HIGHLY CONSERVED NEURO-ENDOCRINE
BEHAVIOR
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DEFENCE NUTRITION REPRODUCTION
HORMONES NERVES MUSCLES
HIGHLY CONSERVED NEURO-ENDOCRINE
BEHAVIOR
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BEHAVIOR
WHOLE BODY
HORMONES NERVES MUSCLES
HIGHLY CONSERVED NEURO-ENDOCRINE
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Clinics in Perinatology,
June 2004, Vol 31(2) page 210
Stanley Graven
Early neurosensory visual
development of fetus and newborn.
“It is a serious mistake to assume that the
principles derived from careful animal studies
do not apply to human infants.
The risk of suppression or disruption of
needed neural
processes ... is very significant and potentially lasts a life time.
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All mammals have set sequence of behaviours at birth ………….
……. All with a single purpose : to
BREASTFEED
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After birth, events are
determined …
… by the neonate
stimulating the mother!
(Rosenblatt 1994)
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Breast-feeding is “established
through a set of mutual,
complex sensory stimulations
in mother and child.”
(Kjellmer & Winberg 1994)
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The “habitat - niche” concept
HABITAT
DETERMINES
BEHAVIOUR
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The “habitat - niche” concept
BEHAVIOUR ENSURES
BIOLOGICALNEEDS
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Warming, feeding andprotection behaviours areintricately, inseparablylinked to the right place.
(Alberts 1994)
= NUTRITION PROGRAMME
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In all mammals …….
….. the newborn is responsible for initiating breastfeeding,
not the mother !!
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In all mammals …….
….. the newborn is responsible for initiating breastfeeding,
not the mother !!
EXCEPT IN HUMAN ???
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Sequence human newborn breast-feeding
Pre-requisite = habitat
hand to mouth
tongue moves
mouth moves
eye focuses nipple
crawls to nipple
latches to nipple
suckles
(Widstrom et al 1994)
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“The newborn may appear
helpless, but displays an
impressive and purposeful
motor activity which, without
maternal assistance, brings the
baby to the nipple.
(Michelson et al 1996)
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“The newborn may appear
helpless, but
raises its own temperature,has a higher blood glucose,metabolic adaptation faster.
(Widstrom 1987)
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METABOLIC ADAPTATION
SSC started in the first 20 minutes after birth
SSC CotBlood glucose (1 hr) 3.17 2.56Base excess drop 3.4 1.8
(Christenson 1992)
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Warming, feeding and
protection behaviours areintricately, inseparablylinked to the right place.
(Alberts 1994)
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Animal literature does not talk about mammalian lactation, it talks about mammalian birth.
Ruin the birth – andthere is no lactation
With a good birth, lactation follows
Diane Weissinger
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PSN envisions a community that embraces its mothers and babies, and
values the unique
opportunity at birthto impact the physical and emotional
well-being of the newborn.
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Target #1 for 2005:
Report that 65% of infants are placed and remain in
direct skin to skin contactwith their mothers
for at least one hourduring the first 3 hours after birth.
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Skin-to-skin and breastfeeding (4)
0
10
20
30
40
50
60
70
80
90
100
3Q05 4Q05 1Q06 2Q06 3Q06 4Q06 1Q07 2Q07
Breastfeeding intention Skin-to-skin one hour Breastfeeding at discharge
Used with permission: Ruth Stanhiser, MD
Babies breastfeeding
Mothers intending to breastfeed
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More skin-to-skin more breastfeeding
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DEFENCE NUTRITION REPRODUCTION
HORMONES NERVES MUSCLES
endocrine autonomic NS somatic
… highly conservedneuro-endocrine behaviors
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BREASTFEEDING IS A BEHAVIOUR OF THE NEWBORN
Not the mother !!
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DEFENCE NUTRITION REPRODUCTION
HORMONES NERVES MUSCLES
endocrine autonomic NS somatic
… highly conservedneuro-endocrine behaviors
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Animal literature does not talk about mammalian lactation, it talks about mammalian birth.
Ruin the birth – andthere is no lactation
With a good birth, lactation follows
Diane Weissinger
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BREASTFEEDING THE PREMATURE
Premature babies will need help.
BERLITH PERSSON
has provided that help …
PERSSON’S WHEEL !
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KERSTIN HEDBERG-NYQVIST:(Early Human Dev 55 (1999) 247 -264.)
PIBBS Preterm Infant Breastfeeding Behaviour Scale
rooting 0 - 2areolar grasp 0 - 3latch (and fixation) time 0 - 3sucking 0 - 4longest sucking burst 1 - 6swallowing 0 - 2
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KERSTIN HEDBERG-NYQVIST:
PIBBS Preterm Infant Breastfeeding Behaviour Scale
Nutritive sucking = >5ml swallowed
Full breastfeeding = exclusive Brf
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KERSTIN HEDBERG-NYQVIST:(Early Human Dev 55 (1999) 247 -264.)
PIBBS Preterm Infant Breastfeeding Behaviour ScaleEARLIEST OBSERVATION:(weeks PMA) 28 29 30 31 32 33 34 35 36rooting 90%
grasp 50%
latch 95%
sucking 90% Nutritive
swallow Effective
burst >30sucks
Full breastfeeding 33w
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Step 1 SKIN-TO-SKIN
Continuous skin contact
The newborn must be in the right
environment for the behaviours that
it is capable of to be expressed. It
requires protection from stress and
provision of warmth.
KMC provides the “maternal nest”
1
SSC
Ideally this should be done on prematures AT BIRTH.
However it can be done later, even with nasogastric tube
providing expressed breast milk in the meantime
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Step 2 and 3 Olfactory
The first steps in sequence
require smell of the nipple
which may take longer in
the premature,
and then the smelling of milk.
Babies can identify smells and
tastes from their time in the
uterus in the mother’s milk!
2
3
Smell nipple
Smell milk
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4
5
Step 4 Taste
This is re-inforcing the smell.
Fullterm seems to skip this!
Step 5 Rooting
These are mouth movements
the normal sequence
described in the full-terms.
Here the premature
requires help, with position
and “sipping”
= feeling milk in mouth
Taste milk
Rooting
Sipping
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6
Step 6 First suckling.
Key step, builds on steps 1 to 5.
Must be awake and alert.
Alert period is maximal at birth,
and lasts 45 - 90 minutes.
If missed then, will require feeding,
and several hours delay.
Alert
for
Suckling
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6
Step 6 First suckling.
Note difference suckling vs sucking!
“ … myographically distinct”
For late premature lactation, allow
suckling to develop in successive
alert periods, while feeding by tube.
Alert
for
Suckling
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From 16 or 20 weeks gestation, the fetus is swallowing.
From 26 or 28 weeks gestationthe fetus can SUCKLE
From 36 weeks gestation thefetus is able to SUCK
SUCKING and SUCKLINGsound same, but VERY different
Breastfeeding & Suckling
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7
Step 7 Latching & swallowing
Premature is too physically
weak to crawl to nipple,
but if held to nipple will at
this stage latch on.
Once latched, suckling follows.
Suckling squirts a
controlled dose of milk
to the back of throat, which
is safely swallowed without any
interference of breathing
This is INNATE.
Latching
Swallowing
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8Breast meal
Step 8 First breast milk meal.
Steps 1 to 7 and on take place
rapidly in the fullterm.
They can occur in the first
alert period after birth in a
premature if allowed to,but
may require a longer period
of defined steps in successive
alert periods. For late prem
lactation, step 8 is the first
time milk is swallowed
Enough to feed the baby.
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9
10
Frequent feeding
Together
continuously
Step 9 Frequent feeding
In utero, baby is feeding
Continuously.
Demand feeding
is NOT SUITABLE f
or prematures.
Feeds should be at
most 2 hours apart.
Step 10
Together continuously
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The wheelis not
round
Turns
slow at
first
but
then
picks
up speed!
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BREASTFEEDING A PREMATURE
STEP 1 SSCSTEP 2 ALLOW TIMESTEP 3 State organisation:
alert awakeSTEP 4 SMELLSTEP 5 TASTESTEP 6 LATCHSTEP 7 SUCKLE
NUTRITION
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© 2001 Nils Bergman© 2001 Nils Bergman
BABY STOHM PREM BREASTFEED:
SEE WEBSITE
http://www.kangaroomothercare.com/stohm-breastfeeding.aspx
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THE NEWBORN
also has a larynx that meets theuvula, designed to separate therespiratory tract from the gastrointestinal tract ,enabling the newborn to feed and breathe simultaneously.
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Bottle
Breast
Baseline
pO2
Baseline
pO2
Start feed Ends feed 10 min later
Sucking
burstRest
Takes longer
Suckling
continuousNon-nutritive
Sucking
burst
Meier 1988
BOTTLE AND BREASTFEEDING IN PREMATURE
Prematures babies weighing 1300g and 34/40 PCA,
given alternating bottle and breastfeeds.
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(Chen et al 2000)25 babies in 80 sessions, all <1800g
“There were 2 episodes of apnea and 20 episodes of oxygen desaturation during bottle-feeding and none during breastfeeding. We conclude that breastfeeding is a more physiological feeding method for the preterm infant and bottle-feeding may be more stressful.”
BOTTLEFEEDINGIS STRESSFUL
and DANGEROUS
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SUCKLING uses the largest muscle in the baby’s head, making the smallest movement
SUCKING requires lots of tiny and weak muscles, making maximum effort,
… also causes hypoxia,… and is STRESSFUL !
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Bottle feeding requires SUCKING,
which requires completely different
muscles, and does NOT allow co-
ordination between swallowing and
breathing. Bottle feeding causes STRESS in
prematures, and relative post-prandial hypoxaemia.
SUCKLING - in and of itself,
apart from nutrition intake -
has beneficial effects
on both mother and baby.
SENSORY STIMULATION ....
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Suckling induces simultaneous endocrine
effects in the gutof both mother and child
there is a physiological symbiosis between them.
Breast feeding also has psychic effects; CCK is produced, which induces sedation and sleep.
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STATE ORGANISATION.
The ability to appropriately control the level ofsleep and arousal.
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Simplified scale -
HARD CRYING
CRYING
FUSSING
ACTIVE AWAKE
QUIET AWAKE
ALERT INACTIVE
DROWSY
ACTIVE SLEEP
IRREGULAR SLEEP
QUIET SLEEP
DEEP SLEEP
L to R shunting, IVH risk
Stressful, wastes calories,
… build up to stress
This is feeding zone!
Time to connect - stimulation
… transition zone
… transition zone
… activity consumes calories
Good sleep - digestion zone
Apnoea zone !!
STATE ORGANISATION.
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Simplified scale -
HARD CRYING
CRYING
FUSSING
ACTIVE AWAKE
QUIET AWAKE
ALERT INACTIVE
DROWSY
ACTIVE SLEEP
IRREGULAR SLEEP
QUIET SLEEP
DEEP SLEEP
Incubator
SSC
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Simplified scale -
HARD CRYING
CRYING
FUSSING
ACTIVE AWAKE
QUIET AWAKE
ALERT INACTIVE
DROWSY
ACTIVE SLEEP
IRREGULAR SLEEP
QUIET SLEEP
DEEP SLEEP
risk
stress
feeding
stimulation
digestion
apnoea
KMC babies oscillate slowly in safe zones
Separated babies oscillate
erratically to danger zones
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rest-activity cycle
is approx 60 minutes long(Ludington 2006)
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Not so much duration,
or density of any sleep stage,
or number of sleep stage episodes, but,
cycling between quiet sleep
and active sleepis what is important
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SLEEP CYCLING –Separation vs contact
In SSC: • Normal cycling• Non-chaotic pattern
48 hour baseline chaotic pattern of
activity and quiet HR & RRPre-KC SSC
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“The newborn may appear
helpless, but displays an
impressive and purposeful
motor activity which, without
maternal assistance, brings the
baby to the nipple.
(Michelson et al 1996)
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Gut hormones.(Uvnas-Moberg 1989)
20 different hormones work in the gut –
regulated by the vagal nerve.
Each has a specific function.
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Gut hormones.
"Bad guy" - SOMATOSTATIN: (produced by fetus, rise 10-fold under stress)
inhibits gastrointestinal secretion, inhibits motility , reduces blood flow to gutand absorption,
causes gastric retention, vomiting, constipation.
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SOMATOSTATIN:
inhibits the good hormones, contributes to
slow weight gain.At high levels also
inhibits release of growth hormone.
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It takes 30 to 60 minutes to lower somatostatin and other stress hormones
SLEEPVITAL !!!
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DISSOCIATED INFANTWILL NOT SHOWFEEDING CUES
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SEES
Mum’s eyes
Hand TOUCH
Mum’s skinSkin-to-skin
CONTACT
SENSATIONS THAT WIRE BRAIN
Back FEELS
Mum’s arm
holding
TASTES
Mum’s milk
Ear HEARS
Mum’s voice
SMELLS
Mum’s milk
WARMED on
Mum’s front
MOVES
with Mum
Slide from JILL BERGMAN
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TRIGLYCERIDE Left : glycerol, Right: palmitic acid, oleic acid, alpha-linolenic acid
In phosphoglycerides, glycerol molecule same:
two fatty acids esterified
Phospholipids area major component of all biological membranes,
Sphingomyelin particularly concentrated in BRAIN major part of MYELIN.
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TRIGLYCERIDE
MYELIN.
Dendirification and myelinisation peaks occurat 2 and 6 monthsis maximal at one year ....
At one year: human milk has less protein,but MORE TRIGLYCERIDE !!!
FATTY ACIDS ARESPECIES SPECIFIC
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Up to 6 months, milk is 7.4% fat,
but after 12 months it is 10.7%
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CC homozygote for “FADS2”, “missing”NOT Brf DID Brf DID Brf
NZ 98.4 103.2 98.9UK 97.3 104.0 100.7
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BREASTFEEDINGAND BREAST MILK
INCREASE IQ
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BOTTLE FEEDING& FORMULA
DECREASE IQ
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Be sure the wet nurse has plenty of milk ... because if she lacks it she may give the babymilk of a goat or sheep or some other animal,because the child ... nourished on animal milkdoes not have perfect wits like one fed on woman’s milk and always looks stupid and vacant and not right in the head.
14th century Tuscan text
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BOTTLE FEEDING& FORMULA
DECREASE IQ
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Human Milk Banking Association
of North America•Setting the Standards for Human Milk Banking
•Meeting the Milk Banking Needs for North America
•A Safe Alternative in the Absence of Infant's Own Mother's
This website is designed to provide information on
milk banking and how to contact a milk bank to
donate milk or to order donor human milk. This
site is also a resource for health care providers and
others who are looking for information on
HMBANA's resources and services.
http://www.hmbana.org/
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"Where it is not possible for the biological
mother to breastfeed, the first alternative, if
available, should be the use of human breast
milk from other sources. Human milk banks
should be made available in appropriate
situations."
World Health Organization/United
Nations Children's Fund
http://www.breastmilkproject.org/
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INFANT FEEDING FREQUENCY:available evidence & neuroscience
References in this format
OVERVIEW:New section this background
NeuroscienceAnatomy & physiologyAvailable evidenceProposal feeding frequencyImplications
85
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"I have finally cum to the konklusion
that a good reliable set ov bowels
iz wor th more to a man
than enny quantity of brains.“
Josh Billings
http://www.vivo.colostate.edu/hbooks/pathphys/digestion/stomach/anatomy.html
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CNS
ENS
ANS
InternalSomaticenvironment
CNS: cortical / subcortical(also to PNS)
ANS: emotional / limbic brain(incl SNS)
ANS: myelinated vagus (NA)
ANS: unmyelinated vagus (DMC)sub-diaphragmatic
ENS: submucous plexusmyenteric plexus
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The digestive system is endowed with its own, local nervous system referred to as the enteric or intrinsic nervous system.
The magnitude and complexity of the enteric nervous system is immense - it contains as many neurons as the spinal cord.
ENTERIC NERVOUS SYSTEM !!
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CEPHALIC PHASEGASTRIC PHASE
INTESTINAL PHASE
FEEDBACK LOOPS
CNS
ENS
ANS
InternalSomaticenvironment
89
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Functional at end of first trimester,begins very early, experience dependent“effective from 29w GA” significant
SMELL “Olfaction in the fetal and premature infant: functional status and clinical implications”
Benoist SCHAAL
ENS
ANS Breast
Sensory environment :
Intrusive(pain) Supportive
InternalSomaticenvironment
Expectedexternalenvironment
Schaal 2004 90
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modulates state organisationelicits emotional behavioursactivates pre-feeding actionsanticipatory digestive physiologyregulates pace of ingestive behaviour
SMELL
Schaal 2004 91
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Perinatal brains show orientations towards
“neonatal olfactoryexpectations”
When provided:calming, autonomic orientation, active approach, metabolic conservation.
When not fulfilled:withdrawal, autonomic defense & distress behaviours, metabolic expenditure
Schaal 2004 92
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DOUCETThe secretion of Areolar (Montgomery‟s) Glands from Lactating Women Elicits Selective, Unconditional Responses in Neonates
“… breast chemosignalsactivate oral activity on the nipple that releases a cascade of behavioral, neural, neuroendocrineand endocrine processes in the newborn and the mother.”
Doucet 2009 93
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The secretion of Areolar(Montgomery‟s) Glands
“In early ontogeny the sleeping brain may thusremain sentient of an organism‟s odor environment.”
Doucet 2009 94
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INFANT FEEDING FREQUENCY:available evidence & neuroscience
OVERVIEW:
NeuroscienceAnatomy & physiologyAvailable evidenceProposal feeding frequencyImplications
95
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96
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Fetal stomach appears 4 weeks GA.By 11 weeks, wall capable of muscular
contraction.
“Patterns of antropyloric motilityin fed healthy preterm infants”
... the neuroregulatory mechanisms responsible for the coordination of antro-pyloric motility and gastric emptying are
well developed by 30 weeks of PMA.Hassan 2002 97
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Hydrochloric acidimportant for activation of pepsinogen,
inactivation of microorganisms such as bacteria.
Pepsinogenactivated by acid into active pepsin,
responsible for the stomach's ability to initiate digestion of proteins.
Chymosinis an enzyme whose role is to curdle or
coagulate milk in the stomach, a process of considerable importance in the very young animal.
98
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Chymosinmakes the milk into “cheese”halfway between liquid and solidstomach empties in 60 minutes
milk
99
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Gut hormones.
20 different hormones work in the gut –
regulated by the vagal nerve.
Each has a specific function.
Uvnas-Moberg 1989 100
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CEPHALIC PHASEGASTRIC PHASE
INTESTINAL PHASE
FEEDBACK LOOPS
101
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Gut hormones.
"Bad guy" - SOMATOSTATIN: (produced by fetus, rise 10-fold under stress)
inhibits gastrointestinal secretion, inhibits motility , reduces blood flow to gutand absorption,
causes gastric retention, vomiting, constipation.
Uvnas-Moberg 1989 102
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SOMATOSTATIN:
inhibits the good hormones, contributes to
slow weight gain.At high levels also
inhibits release of growth hormone.
Uvnas-Moberg 1989 103
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It takes 30 to 60 minutes of SSC to lower somatostatinand other stress hormones
SSC &SLEEPVITAL !!!
104
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The “niche” (occupation) of a neonate (Alberts)
BOND FEED
SLEEP SLEEP
PLAY FEED
Alberts 1994 105
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Enteric Nervous System
The “niche” (occupation) of a neonate (Alberts)
BOND FEED
SLEEP SLEEP
PLAY FEED
106
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EVIDENCE FORFEEDING FREQUENCY????
Edmond 2006 107
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Breastfeeding and mother’s milk:Strong and consistent evidence 108
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Cup feeding versus bottle feeding:Cup feeding higher breastfeeding
greater stability109
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Only case series ... Insufficient evidence
No mention of
stomach capacity110
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EVIDENCE FORSTOMACH CAPACITY ????
Edmond 2006 111
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0
0.5
1
1.5
2
2.5
3
3.5
4
0 10 20 30 40 50 60 70 80
volume ingested
fee
din
g f
req
ue
nc
y
Assumption: 3kg baby, requiring 160 ml/kg/daydaily requirement = 480ml
StandardCARE:3 hourlyschedule
112
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KEY QUESTION:
WHAT IS THE
STOMACHVOLUMEOF THE
NEONATE ???113
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Goldstein 1987
Length
Transverse
AP diameter
Using +2SD
114
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Formula for calculation of stomach capacity (Charles Bradshaw, UCT)Assumptions: the stomach can be approximated by dividing into three sections, namely a ellipsoidal hemisphere, an ellipsoidal cylinder, and a skewed ellipsoidal cone. Variables: a = anteroposterior radius, t = transverse radius, l = length stomachRelations: the height of the cone and the hemisphere are both the same as „a‟.
Ellipsoid = 4/3 * Pi* r1*r2*r3 = 4/3 *Pi * a * a * t; therefore volume of hemisphere = 2/3 Pi * a *a * t
Cylinder = Area of base * height = (Pi * a * t ) * ( l - 2a )Skewed cone = 1/3 * base *height = 1/3 * Pi * a * t * aTotal volume = 2/3 * Pi *a*a*t + Pi * a * t * (l- 2a) + 1/3 * Pi * a * t * a
=Pi a*t*l -Pi * a *a*t= Pi * a * t*(l-a)
Goldstein and Sase data:Stomach capacity at term 10 - 15 ml
BRADSHAW formula
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Assumption: 2,5 kg baby 33w GA,
requiring 150 ml/kg/day = 375 ml
45 MIN CYCLES ( 32 cycles/day)
12 ML PER CYCLE = 384 ml116
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Newborn stomach volume.
Gastric volumes at birthCorrelated with gastric pH,gastrin and somatostatin
“fetus drinks 10 ml portions of amniotic fluid …”
Widstrom 1988 117
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Only recent study located:“Autopsy” capacity was determined
in Indian post-mortem studies
100 autopsies (63 SB, 37 ENND)Tied at cardia and pylorus, filled withwater, emptied & measured, repeated,“… obliteration of the gastric curvatures”“due care to minimize stretch artifacts”
Naveed 1992
“An Autopsy Study of Relationship between Perinatal Stomach Capacity and Birth Weight.”
118
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Infants above 2500g only:Ave Range
Stillborn (n 11) 19.6 ml (10-35)Early death (n 9) 17.8 ml (10-25)All cases (n 20) 18.8 ml
Naveed 1992
“An Autopsy Study of Relationship between Perinatal Stomach Capacity and Birth Weight.”
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120
KERNESSUK 1997 (Russian)
Postmortem: in situ measures(applied Bradshaw formula)
AveNewborn (n 11) 15 ml2 months (n 11) 35 ml2-4 m (n 10) 50 ml4-6 m (n 8) 100 ml
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Known references with data:
Scammon and Doyle 1920
Zuccarelli‟s method: stomach filled at autopsy to “a pressure of between
15 and 20 centimeters of water”
Scammon 1920
“Observations of the capacity of the stomach in the first ten days of post natal life.”
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Anatomic capacity was determined in post-mortem studies
Main data set Alliot 1905 (n 25)
Scammon own cases ? (n 13)
30 – 35 ml at birth –almost regardless of birth weight
Scammon 1920
“Observations of the capacity of the stomach in the first ten days of post natal life.”
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Known references with data:
Scammon and Doyle 1920quoted in Silverman 1961
14571 feeding records from 323 newborns“physiologic capacity” all breastfed
test weighing before and after feeding
Scammon 1920
“Observations of the capacity of the stomach in the first ten days of post natal life.”
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“… modern infant feeding.”
“infants were breastfed 5 times per day”
INFERENCE?? If fed 5 x per dayand daily requirement 160 ml x 3kg = 480Required volume: 480 / 5 = 96 mls
Did not measure stomach capacity:Pre-determined a feeding frequency!
Scammon 1920 124
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“… modern infant feeding.” 5 per day
Did not measure stomach capacity:Pre-determined a feeding frequency!
“ … the figures … presented here are distinctly higher than those of earlierinvestigators … not surprising considering… (they) made their observations upon infants which were fed eight or moretimes per day.”
Scammon 1920 125
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Imagine a study !!
Let us measure the stomach capacitywith a balloon ... at end of NGT Test the pressure on adults
must not be uncomfortable
Once the pressure starts to rise: there is risk for reflux to be avoided – expected physiology
THIS SHOULD BE THE STOMACH CAPACITY
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Imagined study was done!!
Zangen S et al 2001Rapid Maturation of Gastric Relaxationin Newborn Infants
Zangen 2001
No reference given ....
127
75 ml per feeding
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Zangen S et al Rapid maturation of gastric relaxation in newborns
Pressures (mmHg)
Balloon inflates to
15 ml no increase
functional capacity
128
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TERMINOLOGY PROPOSALS
“Functional capacity”equivalent to “expectation volume”,for which optimal pepsin / acid is made,
does not cause distentionallows adequate time for curdleallows protein breakdownallows controlled pyloric passage
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Zangen S et al Rapid maturation of gastric relaxation in newborns
Pressures (mmHg)
Balloon inflates to
15 ml no increase20 ml pressure OK
physiologicalcapacity …. 130
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TERMINOLOGY PROPOSALS
Physiological capacityMaximal amount stomach can handlewithout undue stress.
“Receptive capacity” of STOMACHmaximal amount stretched organ holds
“Ingestive capacity” of BABYamount baby or infant swallowed,
(note, excess not in stomach)131
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Physiological capacityMaximal amount stomach can handlewithout undue stress.
“Receptive capacity” of STOMACHmaximal amount stretched organ holds
“Ingestive capacity” of BABYamount baby or infant swallowed,
(note, excess not in stomach)
Scammon and Doyle did draw attention to this also ....
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EVIDENCE: (NBn 111009)
Author Capacity Note:Sase 10-15 ml Live, term fetusGoldstein 10-15 ml Live, term fetusWidstrom 10 mls Live, newbornZangen 20 mls Live, (pressure)
Naveed 20 mls Autopsy (SB)20 mls Autopsy (ENND)
Kernessuk 15 mls Autopsy (in situ)Scammon 30-35 ml Autopsy (water
(Alliot) pressure)133
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PROPOSAL:
The CAPACITY of aweek old baby‟s stomach is
approx 20 ml.134
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INFANT FEEDING FREQUENCY:available evidence & neuroscience
OVERVIEW:
NeuroscienceAnatomy & physiologyAvailable evidenceProposal feeding frequencyImplications
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0
0.5
1
1.5
2
2.5
3
3.5
4
0 10 20 30 40 50 60 70 80
volume ingested
fee
din
g f
req
ue
nc
y
Assumption: 3kg baby, requiring 160 ml/kg/daydaily requirement = 480ml
StandardCARE:3 hourlyschedule
MOTHERNATURE:
1 hourlyschedule
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PHYSIOLOGICAL CAPACITY
RECEPTIVE CAPACITY of stomach
INGESTIVE CAPACITY of BABY
FUNCTIONAL CAPACITY
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PROPOSAL:
The FEEDINGFREQUENCY of theNEONATE is
approx 60 min.138
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CEPHALIC PHASEGASTRIC PHASE
INTESTINAL PHASE
BRAIN CYCLING
STOMACH FILLING & EMPTYING
REMNR1NR2NR3NR4
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Normal physiology of theEnteric Nervous System
“Small and frequent feeds, according to the sleep cycle”
The “niche” (occupation) of a neonate (Alberts)
BOND FEED
SLEEP SLEEP
PLAY FEED
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INFANT FEEDING FREQUENCY:available evidence & neuroscience
OVERVIEW:
NeuroscienceAnatomy & physiologyAvailable evidenceProposal feeding frequencyImplications
141
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Zangen S et al Rapid maturation of gastric relaxation in newborns
A balloon in stomachcan fill to 76 mls
What does the stomach –without a balloon –do to 76 mls?
REFLUX !!!PRESUME: each feedapproximately 75 mls
Zangen 2001 142
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WHERE IS THE MILK?
This volumeis not in the stomach
Stomach
Stomach
Stomach
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WHERE IS THE MILK? Mother’s shoulder
Oesophagus
Duodenum
Duodenum
Stomach
Stomach
Stomach
How To Do Just About Everything
How to Burp a Baby
Burping a babycan reduce
spitting up and relieve bloating
caused by swallowed air. Here are some tried-and-true
methods. 144
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WHERE IS THE MILK?
How To Do Just About Everything
How to Burp a Baby
Burping a babycan reduce
spitting up and relieve bloating
caused by swallowed air. Here are some tried-and-true
methods.
What happens when my baby spits up?
Babies spit up when they've eaten too much or when they're burped. It can also happen when your baby is
drooling.
Spitting up is not vomiting.Babies usually don't notice when they spit up, while vomiting is
forceful and painful. Spitting up is a common occurrence for most
babies.
http://familydoctor.org/online/famdocen/home/children/parents/infants/218.html
Copyright © 1996-2007 American Academy of Family Physicians
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WHERE IS THE MILK?
What happens when my baby spits up?
Babies spit up when they've eaten too much or when they're burped. It can also happen when your baby is
drooling.
Spitting up is not vomiting.
Spitting up is REFLUX.Nils Bergman, 2011
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Blood sugar may fall …after 90 minutes ...
“There is a reason behindeverything in nature” Aristotle
Would nature allow this?147
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HYPOGLYCAEMIA
A babies stomach empties in
60 minutes.Blood sugar
may fall …after 90 minutes ...Option?HOURLY FEEDING.148
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Large volume feedsstretched stomach=
doubled absorptivecapacity as adult
Stettler 2005
Stettler et alWeight Gain in the First Week of Life and Overweight in Adulthood:A Cohort Study of European American Subjects Fed Infant Formula
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This finding is important,not so much to predict which infants are at riskfor becoming overweightadults, but more to under-stand the importance of the human physiology of programming during short early-life periods on the development of chronic disease over the life course.
Stettler et alWeight Gain in the First Week of Life and Overweight in Adulthood:A Cohort Study of European American Subjects Fed Infant Formula
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Gastric overfilling syndrome?
Excessive volumesreflux, aspiration, colic
Excessive time intervalhypoglycaemia
Adaptationsdiabetic diathesis, obesity
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Developmental Care of the Enteric Nervous System
“Small and frequent feeds, according to the sleep cycle”
The “niche” (occupation) of a neonate (Alberts)
BOND FEED
SLEEP SLEEP
PLAY FEED
152
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WHAT IS THE
STOMACH VOLUME OF THE
PREMATURE ??
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Assume low resilience
Assume proportionality
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The CAPACITY of alow birthweight premfrom 20ml / 3000g
= 0.007 x BWt (g)
1kg x 0.007 = 7mls2kg x 0.007 = 14mls
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Baby weight; freq; req’d size actual
2kg baby: 4hrly ~ 320 ml/6 = 53ml 14ml
1,5 baby: 3hrly ~ 240 ml/8 = 30ml 10ml
1,0 baby: 2hrly ~ 160 ml/12 = 13ml 7ml
Standardised from20ml capacityfor 3kg baby( x 0.007)
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13w 16w 19w 22w 25w 28w 31w 34w 37w 40w 43w 46w 49w 52w
LINEAR
TERM
PREM
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LINEAR
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Proposed Management
Babies should be fedEVERY TIME THEY WAKE !!
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Proposed Management
All babies should be fedat least once an hour !! 160
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Proposed Management
All babies should be fedat least once an hour !!
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The first Milk Ejection Reflex (MER)
elicited in < 2 minutesworks quicklyswallowed 1 minute
Feeding time (max)3 minutes
Repeat every 1 hour
Prime 2007
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The “normal” or usual and common breastfeed
takes 15 minutesdiscomfort afterburping time 5 minutes
Feeding time 20 min
Repeat every 3 hours
Prime 2007
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3 minute 20ml feeds x 24/d = 72 minutes
20 minute 60ml feeds x 8/d = 160 minutes
SMALL AND FREQUENT FEEDS ARE EFFICIENT !!!!
FEWER NURSES NEEDED !!!
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The calculated dailyrequirement for a 3kgbaby can be given without increase inpressure .... MINIMAL RISK
PARENTS CAN DOSAFELY !
20 mls x 24 feeds= 480mls / day
Zangen 2001 165
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All babies should be fedat least once an hour !!
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First two days: COLOSTRUM15 mls / day (Paula Meier)
“one teaspoon, three times a day”
From third day: MILKsmall frequent feeds
(on demand)between sleeps
Available from Geddes Productions
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Infant feeding frequency:Proposal based on available evidence and neuroscience
“Small and frequent feeds,
adjusted to the sleep cycle”
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In the past, whether to breastfeed or not was a lifestyle choice.
Our new knowledge of the brain
makes breastfeeding a public health issue.
(Gail Storr, Fredericton, NB)
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SUMMARY !!SKIN-TO-SKIN
(Regulation)
SLEEP(Brain)
FEEDING(Stomach)
LOVE !( “mind” )