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transition to extrauterine life
- neonatal period: first 28 days of life
- transtition begins when umbilical cord is cut and baby takes first breath
- nureses role is to assess, monitor, and support neonates as they undergo changes
- families support infant transition
resp system newborn
lungs filled w fetal fluid → fetuses practice breathing w fluid
vag delivery helps w reabsorption of fetal lung fluid
surfactant: produced in utero 24-28 wks → fully efficient at 38 wks → prevents alveoli from collapsing
crackles are heard at birth → cleared up by 1 hr of age
triad signs of resp distress in infant
grunting
nasal flaring
retractions
transition to extrauterine pulm fx
mechanical stimuli - infant chest is compressed through vaginal canal w/ vaginal deliver
chemical stimuli - occurs as infant gets closer to delivery and through labor
sensory stimuli - going from warm to cold environment → helps take 1st breath
circulatory system of fetus
clamping of umbilical cord - increases BP, dilates pulm vessels
three shunts used for circulation
pressure w/in heart → R>L → lungs are filled w/ fluid → has to fight harder to push blood through
ductus venousus
- located by the liver
- bypasses liver bc dont need all fx in utero
- goes through placenta to umbilical vein → bypasses liver → into inferior vena cava
foramen ovale
- between R and L atria
- right side of the heart has more pressure than the left
ductus arteriosis
- between pulmonary artery and aorta
changes in fetus at birth
closure of shunts
ductus venous - shuts at clamping of cord
foramen ovale - closes once fluid starts to be reabsorbed → pressure switches to L>R
ductus arterioles - shunt should close with rising pO2 levels → w/in 1st 72 hrs → as it closes, blood flow gets turbulent through it → can cause temporary murmur
brachiocephalic branch
goes to arm and brain
right hand or wrist of baby for placement of pulse ox during delivery → right hand has same amount of oxygen that is going to brain
neonate responds to cold by
- increasing activity and metabolic rate
- peripheral vascular constriction
- metabolism of brown fat
what is metabolism of brown fat
brown adipose tissue → only if full term → made around 26-30 wks
non-shivering thermogenesis → metabolize fat → blood circulates and warms → releases heat
rapidly depletes reserves if cold stressed
what should babys temp be in first 2-3hrs
97.7-98.6
methods of heat loss
conduction
convection
evaporation
radiation
what is conduction
- direct contact of cold objects/surfaces
- ex: cold hands, scales, equipment
- warm blankets, warm stethoscope, blanket on scale
convection
- drafts transfer heat to cooler air
- ex: open doors, fans, movement of people
what is evaporation
- air drying of skin
- ex: wet skin at birth, wet linens, insensible water loss
- dry infant off immediately → remove wet towels/blankets
what is radiation
- indirect transfer to cooler objects
- ex: windows, outside walls
fx leading to cold stress
physical characteristics
large body surface area
rate of heat loss greater
normal response to cold for healthy term newborn
- activity
- acrocyanosis - shunting blood to middle of body
- flexed body posture decreases surface area exposed to environment
what is cold stress
excessive heat loss leads to hypothermia
increased RR and HR → compensation
increased O2 & glucose consumption → hypoglycemia and desaturations can occur bc O2 is utilized for brown fat metabolization → metabolization and glucose consumption can cause lactic acidosis
decrease in surfactant → resp distress syndrome
risk fx for cold stress
- prematurity, sga → can’t flex arms → prev by swaddling
- hypoglycemia
- prolonged resuscitation efforts, sepsis
- neuro, endocrine, cardiac, resp problems
s/s cold stress
- axillary temp <96.6
- cool skin
- lethargy
- pallor or cyanosis
- tachypnea
- grunting
- hypoglycemia
- hypotonia
- jitteriness
- weak suck
- bradycardia
nursing actions cold stress
proacticve
dry baby off very first thing
skin to skin
swaddling help
hat on head
make sure rooms aren't cold
reactive
put under radiant warmer (probe on skin, slowly warms them)
skin-to-skin if not too cold
assess O2 and glucose
assist w/ feeds
glucose values in neonate
normal is 40-60
hypoglycemia → below 40-45
risk hypoglycemia
cold stress
dm moms → sugars cross placenta, but insulin doesn’t → infant’s pancreas making insulin for large ants of sugar being passed → w/ cutting of cord, you cut off sugar passage → but pancreas still making insulin for it
SGA/LGA
Post or Pre Term
infection
resp distress/resucitation
birth trauma
s/s hypoglycemia
- lethargy
- poor feeding
- jittery
- tremors
- irritable
- s/s resp distress
- hypothermia
nursing actions hypoglycemia
- assess
- blood glucose checks
- if low → dextrose gel inside cheek, can get 3 times then go to NICU for iv dextrose
hepatic system
- slow carb metabolism → doesn’t help stabilize hypoglycemia
- slow blood coagulation: vit k → injection at birth for clotting cascade
- conjugation of billirubin → jaundice (risk: vaucum, bruising)
- insufficient storage of fat soluble vitamins (a, d, e, k, iron)
- slow detoxification: increased toxicity w meds
gi system
stomach capacity: 6ml/kg at birth (cherry)
bowel sounds present w in 15-30min of life
stools
meconium - w/in 8-24hrs
transitional stools
breast milk (yellow) or formula stool (pasty green)
1-10 times/day
gi problems
- failure to pass meconium w in 48-72hrs of age
- fistula or imperforate anus (rectal temp to check)
- abdominal distention
- vomiting after feeds (not gaining weight)
renal system
first void occurs w/in 24 hrs, if not → assess for adequacy of intake, bladder distention, restlessness, pain
at risk for fluid/electrolyte imbalance
output starts little and increases → should void at least 4-5 times/day by 4th day of life
1st day → 1 diaper
2nd day → 2 diapers
3rd day → 3 diapers
4th day → 4-5 diapers
immune system
immature
signs of infection very subtle
breastmilk transfers IgA → protects against infection
IgM shouldn’t be present immediately after birth → indicates exposure to infection from mom
active acquired immunity
Pregnant woman’s exposure to illness and immunizations - infant acquires through placenta or if exposed after birth
Direct exposure
passive acquired immunity
antibodies passed through placenta/milk by way of IgG
key fx neonatal assessment
- general survey
- physical assessment
- gestational assessment
- pain assessment
neonatal assessment - posture and measurements
observe calm newborns posture → clenched hands
measure
head circumference
chest circumference → nipple line around chest, 2-3cm less than chest
length - crown to heel
weight - naked → zero out scale
all measurements once at delivery → weighed every day
key features weight
- 2500-4100 grams (term)
- <2500 g is sga
- >4100 g is lga
- should not lose >10% birth weight in 3 days
- back to birth weight by 2 wks
vital signs
hr: 110-160
can be <110 if sleeping
>16p if angry
murmurs first few days → still get echo to make sure
rr: 30-60, irregular and pausing
a pause > 20 sec w color change and desats → apnea
temp: 97.7-99 after 1st 3 hrs
skin assessment
- pink and warm w acrocyanosis
- milia present on bridge of nose and chin
- langugo present on back, shoulders, forehead, vernix present at delivery
- peeling or cracking noted on post term neonates
- slate gray patches on back of buttocks (mongolian spots)
- other birthmarks may be noted
- may see jaundice
- post term: wrinkly dry skin
head assessment
assess fontanels
anterior - diamond shape → closed by 18 mos
posterior - small triangle → closed by 2-4 most
molding of head may be present
assess suture lines
approximating (flat) or overriding (overlapping)
seperated in pre term
assess for caput or cephalohematoma
what is caput succedaneum**
- localized edema from pressure against cervix → whole head squishy
- crosses suture lines → if lay on one side, it is more squishy on that side
- soft, dependent
- resolves quickly
what is cephalohematoma**
- bleeding between skull and periosteum
- one or both sides
- does not cross suture lines → only on one side entire time
- firm, dev w in 1-2 days
- takes wks or months to resolve
- increases risk for jaundice → when RBC get destroyed, bilirubin gets released
assesment of the eyes, mouth, nose, and neck
assess eyes for drainage, symmetry, shape, size, coordinated movement of lids
sub-conjunctival hemorrhage in the outer canthus of the eyes from pressure during delivery → goes away
asses shape or nose and opening of nares
assess mouth for color, moisture, neonatal teeth, hard and soft palate, tongue movement
tongue tie → somtimes clipped for better latch
assess neck for webbing and range of motion
assessing the ears
assess shape, size, placement (low set), soft and pliable, instant recoil (ear stays folded if pre term), ear pits
hearing screen
performed on all ky newborns after 6hrs of age → can do 2 hearing screen in pt → have to wait 12hrs after failing 1st test
if fail both screens, need follow up w in one month
early intervention important
assessing chest and lungs
symmetry, chest movement, signs of distress, breathing effort, placement and size of breast tissue, nipple placement
prominence of xiphoid process normal
lungs auscultated anterioly and posteriorly, lung sound clear and equal bilaterally
crackles can be heard at birth, but should clear over the next hr
breast tissue may be enlarged
cardiac assessment
- cap rf: <3sec
- brachial and femoral pulse
- auscultate apical pulse one full min
- transient murmurs common
congenital heart defect screening
every baby gets screening
pre-ductal (r hand) and post-ductal (r or L foot) → o2 sats compared after 24 hrs of age → big gap between = defect → further testing
abdomen assessment
- soft, rounded, symmetrical
- bowel sound should be present but may be hypoactive for first few days
- skin around umbilical cord should be assessed for infection
assessing umbilical cord
- 2 arteries 1 vein (AVA)
- fewer vessels present warrants further evaluation
- whartons jelly: protective substance around the vessels
- facilitate drying of cord stump → keep dry as possible → fold diaper underneath
- cord falls off 7-10 days (ok by 3 wks)
gu male assessment
- foreskin completely covers and adheres to glans for 1st 3-4 yrs
- urethral opening should be at tip of penis
- testes palpable at 40 wks
- position of testes and amt of rugae on scrotum used in gestational age
gu female assessment
- pseudo-menstruation and or vaginal discharge normal
- external genitalia usually edematous, vaginal tags common
- labia majora completely cover labia minora in full term female
- urinary meatus midline
muscoloskeletal assessment hips and spine
hips assessed for dysplasia (risk: breech)
assess leg length, gluteal folds, thigh creases
spine assessed for closure, position, and visible defects
lack of closure may be severe or occult
dimple or tuft of hair at scrotum
assessing neuro
Posture, tone, and reflex
Reflexes
Palmar grasp
plantar grasp
babinski reflex - toes fan out and dorsiflex of big toe
tonic neck - hand is turned → arm is extended on the side the head is turned, other arm is flexed
rooting reflex
sucking reflex
stepping reflex - pressure against feet → will step against it
moro reflex - startle → arms fling out and they come back to center
periods of reactivity
Early stages of activity
First period of reactivity - Active, alert wakefulness → lasts about 30 minutes right after birth → want to initiate breastfeeding
Period of inactivity and sleep - Decreased muscle activity and is difficult to awaken → recovering from stress of birth → usually several hours
Second period of reactivity - Newborn awakens and becomes alert again and eager to feed → mins - sev hours
nursing care of the neonate → fourth stage of labor
• Preparation
• Stabilization - Dry, position, suction, stimulate & provide warmth (30 seconds)
• Assessment - Airway, Breathing, Circulation
• Assignment of APGAR
cardiorespiratory statys
• Airway - Bulb syringe for secretions (mouth first, then nose)
• Breathing - Respiratory rate, breath sounds, signs of distress, color (look, listen, feel)
• Circulation - HR, heart sounds, rhythm & murmurs, pulses, blood pressure, cap refill
immediate care of newborn after delivery
Head to toe assessment
Vital signs, weight, length and head circumference
ID newborn & mother
Administer newborn prophylactic medications
Erythromycin (opthalmic ointment)
Vitamin K
APGAR SCORE
measured at 1 and 5 min of life
can be contained after in situation where infant needs advanced resuscitation
scoring - <7 is concern
7-10 → little difficulty transitioning
4-6 → moderate Amt of difficulty → some resuscitation
0-3 → severe distress → full resuscitation
neonatal resuscitation
after initial stabilization & baby isn’t breathing effectively or HR <100 → begin bag/mask ventilation (PPV)
continue until baby begins breathing spontaneously and HR >100
>30 seconds & HR <60 → CPR
after 1 min → check HR → >60 and rising → stop compressions → continue PPV
if still <60 → consider intubation and placement of umbilical venous catheter
nursing care of neonate → 4 hours to discharge
• Perform assessment once per shift
• Assess vital signs per hospital policy
• Bathing (6 to 24 hours)
• Promote parent-infant attachment
• Promote sibling attachment
• Assist parents with feeding
• Perform screening tests and discharge teaching
screening tests
• Newborn screening
• State standards for genetic, metabolic, and infectious disease screenings
• Hearing screening
• Hyperbilirubinemia screen
• Critical congenital heart defect screen
circumcision
Contraindications - Preterm, defects, bleeding problems, compromise (ex. RDS)
Risks - Hemorrhage, infection, pain, adhesions
Benefits - Decreased incidence of UTI, STI
Postoperative care
V/S q15 mins for first hour
Assess for bleeding (quarter-size of blood on diaper and should not drip actively), swelling, voids, pain, infection
Vaseline gauze with each diaper change, if no plastibell
immunizations
• Hepatitis B vaccine (series, administered IM)
• HBIg (If mother is HBsAG positive)
• Give parents information sheet
• Document date, time, location
• Made aware of risks and benefits if declines vaccine