OB test 3 Flashcards
changes from fetal circulation to neonatal
ductus venous- open at time of birth, but shortly after it begins to narrow and shrink. Closes during the first week of life (longer in preterm babes)
Foramen ovale- increased pressure in the left atrium attempts to reverse blood flow and closes this shunt, making it a one-way valve, 1-2 hours after birth (fully closes around 6 months)
Ductus arteriosus- closes within a few days of birth- an increase in partial pressure O2 of newborn blood, triggers constriction. (fully closed 2-3 months later)
APGAR (categories and scoring)
HR, respiration, reflex irritability, muscle tone and color
*does not predict mortality or morbidity
-low score (<7 ) at the 5 minute mark reflects need for resuscitation effort
Muscle tone/Activity
2 points: spontaneous, active movmt in all extremities
1 point: flexed with little movmt
0: no mvmt, floppy
(healthy newborn looks flexed at elbows, hips and knees)
Pulse/HR
(auscultate at apex or palpate at umbilical cord/skin junction)
2 points: HR >100
1 pt: HR < 100
0: no heartbeat found
Grimace/reflex irritability
-rubbing the baby’s back with a blanket- healthy baby should cry
2 pt: cries or agitated response
1 pt: mild reaction
0: absent response
Appearance (skin color)
2 pts: completely pink newborn (rare!)
1 pt: acrocyanotic
0: pale or completely cyanotic
Respiration
2 pt: crying vigorously
1 pt: slow and irregular respirations, weak or gasping
0: not breathing
normal vital range for newborn
HR: 120-160
Resp: 30-60
Temp: axillary! 36.5-37.5 (97.7-99.4)
newborn measurements
weight- varies based on ethnicity and maternal factors- babies lose up to 10% of birth weight in the first 3 days after birth- should regain by 2 weeks (fluid shifts)
length- supine (ag is 50 cm)- grow 1.5-2.5 cm/month
head circumference- widest point of head
chest circumference
Proper newborn identification and safety
2 ID bands on baby (each ankle) and one on birthing parents wrist: sex, date and time of birth, parents last name and doctor/midwife
-another electronic security device placed on baby, sounds an alarm at any of the unit exits
-footprints, along with birthing parents fingerprint at time of birth
newborn medications
Vitamin K: one time dose w/in 6 hours after birth, IM - not naturally present in gut which causes a decrease in coag factors.
-If mom had severe HTN or HELLP- newborn is at increased risk for thrombocytopenia (plt dysfunction)
Hep B immunization (within 24H)- prevent maternal transmission to baby in birth
erythromycin?
tonic clonic
to elicit: place newborn supine, gently rotate head to one side, hold it there for 15 sec. positive response is when arm and leg extend on the facial side and flex the other
when it disappears:
moro
to elicit:
-newborn startled by loud sound or sudden movement
when it disappears: 2 months
rooting
to elicit: stroking newborn’s cheek or corner of mouth
lack of response: could indicate facial paralysis or neuro depression
when it disappears: 3-4 months
sucking
to elicit: insert gloved finger into newborn’s mouth
when it disappears:
palmar/plantar
to elicit: place finger in newborns palm
when it disappears:
babinski
to elicit: draw finger on foot
when it disappears:
walking/stepping
to elicit: leave newborn prone on birth persons abdomen and observe newborns crawl to breast using toes and knees. OR the nurse can hold the baby, place their feet on the bed and observe them trying to stand on their feet and take steps
when it disappears: 8 weeks
acrocyanosis
expected finding at birth: cyanosis of only hands and feet- may last up to a week
-due to immature cardiac system
vernix
expected
cheesy, white substance covering and protecting the skin during intrauterine life
-diminishes the closer to term the fetus gets
lanugo
expected; fine soft hair that covers the newborn’s back, shoulders, face and scalp- common in preterm babes.
disappears in 4 weeks
congenital dermal malanocytosis
(mongolian spots)- bluish gray spots that can occur across the shoulders and hips, lower back near buttocks and legs.
-common in darker pigmented bees- resolve on their own in first few years of life
-not bruises
erythema toxicum
Normal newborn rash- yellow or white papule over an erythematous base on the body (except palms). red spots too? look like flea bites
-unknown cause- may be related to awakening of the immature immune system
caput succedaneum
abnormal if edema observed on newborn’s scalp at birth and did not have an instrumental birht
normal if tools used
causes: extended pushing during vag birth, forceps/vacuum assisted birth (no complications)