Neo Flashcards
what are the clinical manifestations of Fetal alcohol syndrome
growth failure
CNS abnormalities
cognitive defects
behavioral problems
head compression
early deceleration
cord compression; variable shape, abrupt onset
Variable deceleration
fetal hypoxemia, maternal hypotension
Late deceleration
Auscultation of fetal heart sounds
16-18 weeks
perception of fetal movements
18-20 weeks
Contraindications to breastfeeding
Galactosemia, MSUD, PKU HIV, Human T-cell lymphocytic virus 1 & 2 Active TB Herpes virus lesions on breast Radioactive substances
failure of closure of allantoic duct
Persistent urachus
tx: immediate surgical repair
most common defects associated with Beckwith-Wiedemann Syndrome
omphalocele, wilms tumor, macrosomia, hypoglycemia
polyhdramnios
> 2000ml in 3rd trimester, >24cm
Oligogydramnios
<500ml, <5cm
most accurate assessment of gestational age by 1st trimester
crown rump length
target plasma glucose
> or = 45mg/dl
hypoglycemia in infants
<40mg/dl
when is treatment indicated for asymptomatic patients with hypoglycemia
<30mg/dl
when should IV glucose be given?
persistent hypoglycemia <25mg/dl (1st 4 hours) and <35mg/dl (4-24 hours)
Give IV glucose (2ml/kg) 10% glucose
infant with hypoglycemia unable to tolerate oral feeding
IV rate 4-8 mg/kg/min
Neonatal tetanus
ability to suck at birth and 1st few days then inability to suck between 3-10 days; difficulty swallowing, spasm, stiffness, seizure and death
most important neonatal factor predisposing to infection
prematurity or low birth weight
most frequent neonatal hospital acquired infection
coagulase negative staphylococci
SIRS in neonates clinical manifestations
temperature instability
respiratory dysfunction
cardiac dysfunction
perfusion abnormalities
common cause of infection in neonatal period
GBS, E. coli, HSV, CMV, VZV, RSV, Entero, Candida
transferred across placenta
IgG
not transferred across placenta
IgA, IgE, IgM, IgD
Absoulte and relative contraindications to breastfeeding
HIV: risk must be weighed versus risk of transmitting virus to body
TB infection: contraindicated until completion of 2 weeks treatment
Varicella zoster: no direct contact to active lesions; should receive immunoglobulin
CMV: may be found in milk of mothers
Hep B: give immunoglobulin and vaccine
Hep C: not contraindicated
Alcohol: limit to 0.5g/kg/day equivalent to 2 cans of beer, 2 glasses of wine
Cigarette smoking: discouraged but not contraindicated
Chemo, radiopharmaceutical: generally contraindicated
what is the whey:casein ratio in infant formula
18:82 to 60:40
predominant whey in cow’s milk
B-globulin
predominant whey in breastmilk/human milk
alpha lactalbumin
principles of weaning
begin at 6 months of age
at proper age, encourage cup rather than bottle
Introduce 1 new food at a time
energy density should exceed breastmilk
Iron-containing foods
Zinc intake fold be encouraged
phytate intake should be low
Breastmilk should be continued until 12months
give no more than 24oz/day of cow’s milk
Fluids other breastmilk should be discouraged
Give no more than 4-6oz/day of 100% fruit juice
no sugar sweetened beverages
IVH occurs in
gelatinous subependymal germinal matrix
PVH occurs in
injury to corticospinal tracts in white matter
clinically asymptomatic until neurologic sequelae becomes apparent
IVH grading of hemorrhage: bleeding isolated to subependymal area
Grade 1 IVH
IVH grading of hemorrhage:bleeding within ventricle without dilation
Grade 2 IVH
IVH grading of hemorrhage:ventricular dilation
Grade 3 IVH
IVH grading of hemorrhage: IVH and parenchymal hemorrhage
Grade 4 IVH
what is the pathophysiology of HIE?
hypoxia/ischemia –> anaerobic metabolism –> inc lactate and inorganic phosphates
Glutamate accumulates in damaged tissue
prompting NMDA, AMPA, Kainate receptors
inc permeability to Na and Ca
intracellular accumulation of Na, Ca –> cytotoxic edema and neuronal death
treatment for HIE
hypothermia (within 6hr)
high dose erythropoietin
Sz (1st line): Phenobarbital 20mg/kg
Refractory: levetiracetam (preferred)
“whipple’s triad”
plasma concentration of <60mg/dl
concurrent CNS or cathecolamine based symptom
resolution of symptoms when glucose restored to normal
Phenylalanine
deficiency of phenylalanine hydroxylase (PAH) or its cofactor tetrahydrobiopterin (Bh4) –> accumulation of phenylalanine in body fluids and brain
severe deficiency >20mg/dl
milder between 10-20mg/dl
major organ damaged in PKU
brain
mousey or musty odor
PKU
manifestations of PKU
neurologic: seizures, spasticity, hypereflexia and tremors
EEG abnormalities
Non-PKU hyperphenylalanemia: >2mg/dl less than 20mg/dl; do not produce phenylketones
treatment of PKU
low phenylalanine diet
maintain levels at 2-6mg/dl throughout life
Maternal PKU
high risk of having offspring with intellectual disability, microcephaly, growth retardation, congenital malformations, CHD
patient is normal at birth then symptoms appear at 1st year; severe pain in the legs, associated with extensor hypertonia of neck and trunk
tyrosine
treatment for Tyrosinemia
Nitisone
titrated to the lowest most effective dose 20-40umol/L
ocular manifestations, skin lesions, intellectual disabilit
Tyrosenemia Type 2
What is the new BPD?
disease of infants born <1000g who were born at <28wks AOG; no lung disease at birth but with progressive respiratory symptoms after 1st week
Definition of BPD in <32 weeks
36 weeks PNA or discharge home treatment with >21% O2 for 28 days plus:
Mild: breathing room air at 36 weeks PNA or discharge home
Moderate: <30% O2 at 36 weeks or discharge
Severe: >30% need O2 at 36 weeks AOG
Definition of BPD >32 weeks
> 21 days to <56 postnatal age or discharge home. Treatment with 21% O2 for 28 days plus:
Mild: breathing room air by 56 days or discharge home
Moderate: <30% O2 at 56 days or discharge
Severe: >30% need O2 at 56 postnatal age
What are the chest xray findings in RDS?
air bronchograms
low lung volume
diffuse, fine, reticular granularity of parenchyma
What are the xray findings in TTN?
early onset tachypnea
clear breath sounds
chest xray: prominent perihilar pulmonary vascular markings, fluid in intralobar tissues
small pleural effusions
what are the chest xray fndings in BPD?
fine, diffuse interstitial opacities; wandering atelectasis
severe: increase O2, frank cystic changes or pneumatoceles
What are the chest xray findings in Meconium aspiration syndrome
patchy infiltrates
flattening of the diaphragm
coarse streaking of both lung fields
increase AP diameter
most frequently involved part in NEC?
distal part of ileum
proximal segment of colon
clinical features of kernicterus
Phase 1 (1-2 days): poor suck, stupor, hypotonia, seizures Phase 2: hypertonia of extensor muscles, opisthotonus, retrocolis, fever Phase 3 (after 1st week): hypertonia
crosses suture lines
caput seccedaneum
fluid filled mass; doest not cross suture lines; not present at birth
Cephalhematoma
not restricted by boundaries; larger and more diffuse; requires prompt recognition
subgaleal hemorrhage
assymetric skull and face with ear malalignment
Deformational plagiocephaly
premature fusion of sutures
Cranial synostosis
EINC steps
- Immediate and thorough drying
- skin to skin contact
- properly timed corn clamping
- nonseparation of baby to mother
most frequent pathogenic bacteria to colonize umbilical cord
Staphylococcus aureus
recommended for infants born outside birthing centers
topical chlorhexidine
bright yellow or orange jaundice
Indirect bilirubin
Greening/ muddy yellow jaundice
DIrect bilirubin
estimate of bilirubin levels
face: 5mg/dl
mid abdomen: 15mg/dl
soles: 20mg/dl
pathologic causes of hyperbilirubinemia
erythroblastosis fetalis
conceled hemorrhage
sepsis or congenital infections
deposition of unconjugated bilirubin (Indirect) in basal ganglia and brainstem nuclei
Kernicterus/bilirubin encephalopathy