Neonates Flashcards
Define:
extremely preterm preterm late preterm early term term post-term
extremely preterm: ≤28 weeks
preterm: 28 weeks to 34 weeks
late preterm: 34 weeks to ≤36 weeks and 6 days
early term: ≥37 weeks to ≤38 weeks and 6 days
term: ≥39 weeks to <42 weeks
post-term: ≥42 weeks
Define
extremely low birth weight (ELBW):
very low birth weight (VLBW):
low birth weight (LBW):
extremely low birth weight (ELBW): ≤1000 grams
very low birth weight (VLBW): ≤1500 grams at birth
low birth weight (LBW): ≤2500 grams
Define
small for gestational age (SGA):
appropriate for gestational age (AGA):
large for gestational age (LGA):
small for gestational age (SGA): ≤10th percentile for gestational age
appropriate for gestational age (AGA): 10th to 90th percentile for gestational age
large for gestational age (LGA): ≥90th percentile for gestational age
Preterms have the highest percentage of total fluid water relative to the body weight.
True, the percentage of total body water decreases with increasing gestational age and into adulthood.
Infants have high ratio of surface area to body weight which results in….
high evaporative losses
Insensible water losses increases with gestational age T/F
True.
In extreme preterm placing baby in bag is useful because
decreases insensible water loss.
Why preterm babies can develop hypernatremia and what do we do?
there is increase insensible water losses, leading to hypernatremia.
Can require up to 200mL/kg/day of maintenace fluids to maintain fluid losses and normal sodium levels.
Causes of hypoNa in neonates
excessive fluid resuscitation
donor human milk intake in very low weight
SIADH
HyperK is common in preterm and term infants T/F
True, some causes:
acidosis
Congenital adrenal hyperplasia
HEMOLYZED sample- so recheck
Why preterm formulas ave higher concentrations of Ca and phosphorus
They are supplied 2:1 ratio
most preterm do not obtain adequate calcium and phosphorus stores during third trimester and have a greater need to maintain bone growth than term babies
Definition of hypoglycemia
< 40 in first 48 hours of life, and PES defines it by hypoglycemia < 60 mg/dL by 48 hours of life.
Risk factors for neonatal hypoglycemia
Prematurity LGA or SGA infant of diabetic mother stress sepsis congenital disorders ( Beckwith Wiedemann Syndrome, inborn errors of metabolism) Polycythemia Materna medication exposure ( beta blockers, insulin)
Screen for glucose in neonates
within the first hour of life AFTER receiving an initial feed(formula or milk)
Infants of diabetic mother are at increased risk for
hypoglycemia shoulder dystocia hypoCa and hypoMg respiratory distress ( RDS vs transient tachypnea of the newborn) polycythemia hyperbilirubinemia congenital defects ( interventricular septal hypertrophy, Fallot, TGA) small left colon syndrome caudal regression syndrome
Fluid administration on the first day of life to <1.0 kg/<28 weeks
120 cc/kd/day
Fluid administration on the first day of life to
1 - 1.5 kg/28-32 weeks
100 cc/kg/day
Fluid administration on the first day of life to\
1.5-2.0 kg/32-36 weeks
80 cc/kg/day