Newborn/NICU + Gene + Met Flashcards
Trisomy 18
Edwards Syndrome
*Rockerbottom feet
IUGR
Hypertonia
prominent occiput
small mouth
micrognathia
pointy ears
short sternum
horseshoe kidney
flexed fingers (index finger overlapping the 3rd finger and the 5th finger overlapping the 4th
Congenital heart disease (valvular involvement, VSD, PDA)
GI involvement (Meckel diverticulum, malrotation, Omphalocele)
Trisomy 13
Patau Syndrome
Classic triad:
micro/anophthalmia
cleft lip and/or palate
postaxial polydactyly
*Cutis aplasia
Normal weight
CNS: Holoprosencephaly with incomplete development of forebrain and olfactory and optic nerves, severe intellectual disability, deafness
Craniofacial: Abnormal auricles, microphthalmia/anophthalmia, colobomata, sloping forehead (fissure or cleft of the iris, ciliary body, or choroid)
Skin and limbs – Capillary hemangiomata, simian crease, hyperconvex narrow fingernails, polydactyly of hands and sometimes feet, prominent heel
Cardiac – VSD, PDA, ASD, dextroposition
Genitalia – Cryptorchidism in males; bicornuate uterus in females
Less common:
●Growth – Prenatal growth deficiency
●CNS – Hyper- or hypotonia, agenesis of corpus callosum, cerebral hypoplasia
●Eyes – Hypo- or hypertelorism, cyclopia, upslanting palpebral fissures
●Nose, mouth, mandible – Absent philtrum, narrow palate, micrognathia
●Hands and feet – Retroflexible thumb, syndactyly, cleft between first and second toes, hypoplastic toenails, radial aplasia
●Abdomen – Omphalocele, incomplete rotation of colon, Meckel diverticulum
●Renal – Polycystic kidney, hydronephrosis, horseshoe kidney
Antenatal steroid
- when
- why
<34 weeks
lung development
IVH
NEC
mortality
Antenatal magnesium sulphate
<32 weeks
neuroprotection (cerebralpalsy)
Associations:
A. Maternal Graves disease B. Maternal diabetes mellitus C. Maternal hyperparathyroidism D. Maternal SLE E. Maternal vitamin D deficiency
A. Maternal Graves disease – hyperthyroidoism
B. Maternal diabetes mellitus – hypoglycemia, renal vein thrombosis
C. Maternal hypoparathyroidism – hyponatremia
D. Maternal SLE – heart block
E. Maternal vitamin D deficiency – hypocalcemia
William Syndrome
Elfin facies
irritability
supra-valvular aortic stenosis
Russell Silver Syndrome
IUGR, triangular-shaped face, clinodactyly
Noonan Syndrome
(similar to turner but no chrom abnormalities)
Short stature
webbed neck
pulmonic stenosis
epicanthal folds ptosis low nasal bridge, upturned nose dental malocclusion nystagmus myopia hypertrophic cardiomyopathy cognitive delay ASD, VSD shield chest lymphedema high arched palate
Congenital Myotonia
Weakness, club feet, tented mouth, inadequate respirations
Uncontrolled gestation DM - associations
RDS
Hypoglycemia
LGA
Risk fo preterm delivery
• SES status – <20or>40years – Very low SES, Low BMI • Past Gyne/OB - Pyelonephritis - Uterine / cervical anomalies - Multiple abortions - Preterm delivery • Lifestyle – > 10 cigarettes/day – Heavy work • Pregnancy – Multiples
Risk of IUGR
• Maternal – Hypertensive, preeclampsia – Renal disease – Diabetes – Antiphospholipid syndrome – Severe nutrition deficiency – Smoking / substances – Maternal hypoxia (CHD, lung) • Fetal – Multiple gestation – Placental abnormalities – Infection (viral) – Congenital anomaly, chromosomes
IUGR – oligohydramnios or polyhydramnios?
Oligo
Vit K Prophylaxis
0.5mg (<1500g) or 1mg (>1500g) IM in first 6 hours of life
Oral alternative if parents refuse (less optimal):
• 2mg at 1st feed, repeat at 2-4 weeks and 6-8 weeks
Vit K deficiency bleeding
- types
- tx
Early VKDB
– 1st 24 hours
due to maternal medication
Classic VKDB
- preventable by VitK prophylaxis
– bleeding 1st wk of life
LateVKDB
– bleeding 2nd-12th wk of life up to 6 months
– Exclusive breastfeeding, no Vit K (or only 1 oral dose!), fat malabsorption
Treatment of VKDB: VitaminK, FFP
What type of vit K def bleeding is due to no prohphylaxis
Classic - 1st week
What are the shunts in fetal circulation
1. Ductus Venosus UV -> IVC 2. Foramen Ovale RA -> LA 3. Ductus Arteriosus PA -> Ao
Advantages of Breastfeeding
prevent SIDS,
enhance cognitive development, social,
immune / allergy / infection (IgA, WBC, bifidus factor)
CCHD screening - where are the sat probes
right hand
either foot
Who meets criteria for therapeutic cooling
<6h old
≥36 weeks GA
Meets (A or B) and C:
A: Cord pH ≤7.0 or base deficit ≥−16
B. pH 7.01 to 7.15 or base deficit −10 to −15.9 on cord gas or blood gas within 1 h AND
- Hx of acute perinatal event (ex: cord prolapse, plac abruption or uterine rupture) AND
- Apgar score ≤5 at 10 minutes or at least 10 minutes of PPV
C. Evidence of moderate-to-severe encephalopathy, demonstrated by the presence of seizures OR at least one sign in three or more of the six categories
Side effects of cooling
Sinus bradycardia (80-100 bpm)
Hypotension with possible need for inotropes
Mild thrombocytopenia
Persistent pulmonary hypertension with impaired oxygenation
Hypothermia can also prolong bleeding time
Subcutaneous fat necrosis, with or without hypercalcemia, has been reported as a potential rare complication
Infants with HIE, whether they receive therapeutic hypothermia or not, are more prone to
Temp for whole body cooling?
rectal temp of 33.5°C ± 0.5°C
How long to cool for and how fast to rewarm
Cool 72 hours then rewarm 0.5°C q1-2h
Outcomes of HIE
Cerebral palsy or severe disability in > 30%
Severe visual impairment or blindness in up to 25%
Sensorineural hearing loss
Cognitive deficits (partic difficulties with reading, spelling and arithmetic) in 30-50%
Behavioural difficulties, such as hyperactivity and emotional problems
Childhood epilepsy in 13% of mod-sev
Survival rates for <22wga to 26wga
Survival <22wga: extremely rare 22+0-6: 18% 23+0-6: 41% 24+0-6: 67% 25+0-6: 79%
What gestational age do we use plastic bags
<32wga
Pierre Robin Sequence
micrognathia
glossoptosis
airway obstruction
often assoc w Cleft palate (don’t need to have)
Risk factors for RDS
Prematurity
IDM
Asphyxia
Surfactant therapy - benefits
Decreases: mortalitiy pneumothorax PIE duration of vent suport LOS Hospital costs
(No effect on IVH, BPD, NEC, ROP)
How to fix oxygenation on a vent
FiO2
PEEP
How to fix CO2 on a vent
PIP and RR
BPD definition
Oxygen dependence beyond 28 days or at 36 weeks post- gestational age
LBW
VLBW
ELBW
LBW < 2500g
VLBW < 1500g
ELBW <1000g
Complications of prematurity
– Apnea of prematurity - Respiratory distress syndrome – Chronic lung disease - Patent Ductus Arteriosus – Intraventricular hemorrhage - Anemia requiring transfusions – Sepsis, Necrotizing enterocolitis - Retinopathy of prematurity – Neurodevelopment ( CP, cognitive, hearing, blindness, learning disability, behaviour)
Apnea definition
cessation of breathing 20 seconds or 10-20s with bradycardia (<80)
ROP screening
GA < 30 6/7 weeks OR Birth weight < 1250 g
At 4 weeks of age (>26+6) After 31 weeks for (<26+6)
Xray features of NEC
pneumatosis intestinal
porta venous distension
pneumoperitoneum
Long term complications of NEC
Short gut (surgical), stenosis/obstruction, recurrence
Sarnat Scoring
Sarnat 1
Hyperalert, hypertonic, tachycardia, hyperactive reflexes
Sarnat 2
Lethargic, flexed posture, mild hypotonia, weak moro, seizures, bradycardia, hyperactive reflexes
Sarnat 3
Stuporous, flaccid, no reflexes
Therapeutic cooling hypothermia criteria
at least 35 wga
Criteria A or B AND C
A. Cord pH ≤7 or BD ≥-16
OR
B. pH 7.01 – 7.15 of -10 to -16 (cord or 1 hour gas)
AND Hx of acute perinatal event AND APGAR ≤ 5 at 10m or at least 10m of PPV
C. Signs of moderate to severe encephalopathy
When to initiate therapeutic cooling
Temp goal
within 6 hours
33-34 deg C
When to image and what to look for
After rewarming at day 3-5
Can repeat 10-14 days
• Basal ganglia / thalamus / PLIC
= motor + cognitive
• Watershed areas = more cognitive than motor
Erb’s Palsy
- when to refer
C5, 6, 7
possibly phrenic - resp depression
refer at 1 month
Klumpke
C8-T1
Horner
- char
- tx
C5-T1
ptosis
meiosis
observe q1month
refer to surf If present at 3mo
Hyperinsulinism - who at risk
IDM
BWS
SGA
Urea cycle defect:
Organic acidemias:
Urea cycle defect: normal gas – high ammonia
Organic acidemias: acidotic +/- high ammonia
normal gas – high ammonia
acidotic +/- high ammonia
Urea cycle defect: normal gas – high ammonia
Organic acidemias: acidotic +/- high ammonia
Neonatal unconjugated jaundice
– Dehydration – ‘Breastmilk’ – Infection – Polycythemia – Hemolysis – Endocrinopathies – Extravascular blood – Geneticdisorders – Increased enterohepatic circulation (GI obstruction, delayed meconium)
Neonatal conjugated jaundice
– Extrahepatic obstructive • Biliary atresia, choledochal cysts – Bacterial infection – TORCH – Neonatal hepatitis • viral, bacterial, parasitic, idiopathic – Metabolic: • alpha-1 antitrypsin, IEM, endocrinopathies, CF, Iron storage disease, bile acid synthesis defects – Cholecystasis syndromes • Dubin Johnson, Byler – Toxic: hyperalimentation
Red Flags for hyperbilirubinemia
Workup
Onset before 24 hours Hemolysis is a predictor of severity Pallor, Unwell Hepatosplenomegaly
Pale stools, dark urine Conjugated hyperbilirubinemia
Total and conjugated bilirubin CBC, blood group, Coombs test \+/- G6PD, blood film Liver function, Metabolic / Endocrine workup MRI if signs of acute encephalopathy
Cutoffs for severe and critical hyperbili
Severe: TSB > 340 umol/L in 1st 28d
• Critical: TSB > 425 umol/L in 1st 28d
Kleihauer test - what does it do
Checks mom’s blood for fetal hb
Causes of thrombocytopenia in newborn
– Infection: bacterial, TORCH
– Neonatal alloimmune thrombocytopenia
– Other maternal causes
• toxemia, ITP, SLE, Drugs (hydralazine, thiazides)
– Consumption: DIC, Kassabach-Merrit (hemangioma)
– Syndromes: IUGR, TAR, Fanconi’s
– Bone marrow suppression: pancytopenia, leukemia
TEF - polyhydramnios or oligohydramnios?
poly
Causes of symmetrical IUGR
Infection
chromosomal, genetic, malformation, teratogenic, infectious, or severe maternal hypertensive etiologies.
Causes of asymmetrical IUGR
Poor maternal nutrition
Late onset or exacerbation of maternal vascular disease (preeclampsia, chronic hypertension).