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Vomiting in the NewbornVomiting in the Newborn
Not uncommon for some vomiting in 1st Not uncommon for some vomiting in 1st few hours and days after birthfew hours and days after birth Overfeeding, poor burpingOverfeeding, poor burping
DDx:DDx: GI: obstruction, reflux, milk allergy, NECGI: obstruction, reflux, milk allergy, NEC Infection: Sepsis, Meningitis, UTIInfection: Sepsis, Meningitis, UTI Endocrine: Adrenal hyperplasiaEndocrine: Adrenal hyperplasia CNS: Increased ICPCNS: Increased ICP DrugsDrugs
Bilious vomiting is a medical emergency!Bilious vomiting is a medical emergency!
Upper GI problems Upper GI problems vomitingvomiting
EsophagealEsophageal:: first feed, soon after feedfirst feed, soon after feed excessive droolingexcessive drooling if T-E fistula, risk of aspirationif T-E fistula, risk of aspiration
Small bowel atresiasSmall bowel atresias
Malrotation and volvulusMalrotation and volvulus
AchalasiaAchalasia Chalasia/GERChalasia/GER Pyloric stenosisPyloric stenosis
} Need to r/o
Lower GI ObstructionLower GI Obstruction
Presents with:Presents with: DistentionDistention Failure to pass meconiumFailure to pass meconium Vomiting is a later signVomiting is a later sign
Extrinsic vs intrinsic obstructionExtrinsic vs intrinsic obstruction DDx: Imperforate anus, Hirschprung, DDx: Imperforate anus, Hirschprung,
meconium ileus, meconium plug, meconium ileus, meconium plug, ileal atresia, colonic atresiaileal atresia, colonic atresia
ConstipationConstipation > 90% pass meconium in first 24 h> 90% pass meconium in first 24 h
If ‘constipation’ is present from birth:If ‘constipation’ is present from birth: Consider causes of GI obstructionConsider causes of GI obstruction
If present after birth:If present after birth: Consider Hirschprungs, hypothyroidism, anal Consider Hirschprungs, hypothyroidism, anal
stenosisstenosis
NB:NB: Some breastfed babies normally stool only Some breastfed babies normally stool only
once every 5-7 daysonce every 5-7 days Premature infants often have delayed Premature infants often have delayed
meconium passagemeconium passage
JaundiceJaundice First 24 h or conjugated at ANY time = ALWAYS abNFirst 24 h or conjugated at ANY time = ALWAYS abN Etiology: Etiology: UnconjugatedUnconjugated
1. 1. RBC destruction/hemolyticRBC destruction/hemolytic : : IsoimmuneIsoimmune, RBC membrane, enzymes, , RBC membrane, enzymes,
hgbinopathieshgbinopathies HematomaHematoma SepsisSepsis (mixed hemolytic and hepatocellular (mixed hemolytic and hepatocellular
damage)damage) HypoxiaHypoxia2. 2. Conjugation AbnormalitiesConjugation Abnormalities:: Breast Milk JaundiceBreast Milk Jaundice Metabolic/Genetic: Gilbert, Crigler-Najjar, Metabolic/Genetic: Gilbert, Crigler-Najjar,
HypothyroidismHypothyroidism3. 3. Increased Enterohepatic CirculationIncreased Enterohepatic Circulation:: GI dysmotility or obstructionGI dysmotility or obstruction Breast feeding jaundiceBreast feeding jaundice
Later onset: Conjugated1. 1. Hepatocellular damageHepatocellular damage: : • ViralViral• BacterialBacterial• Metabolic: TPN, CF, tyrosinemia, otherMetabolic: TPN, CF, tyrosinemia, other
2. 2. Post hepaticPost hepatic: : • biliary atresiabiliary atresia• choledochal cystcholedochal cyst
JaundiceJaundice
Jaundice - Work-UpJaundice - Work-Up History and physical examinationHistory and physical examination Bilirubin - total and directBilirubin - total and direct Blood type and Coomb’sBlood type and Coomb’s HemoglobinHemoglobin Reticulocyte countReticulocyte count SmearSmear Septic workupSeptic workup +/- Abdominal Ultrasound+/- Abdominal Ultrasound +/- Metabolic, Viral workup+/- Metabolic, Viral workup
Risk factors for kernicterusRisk factors for kernicterus
PrematurityPrematurity HemolysisHemolysis AsphyxiaAsphyxia AcidosisAcidosis InfectionInfection Cold stressCold stress HypoglycemiaHypoglycemia
Treatment of JaundiceTreatment of Jaundice
Nutrition/hydrationNutrition/hydration
PhototherapyPhototherapy
Exchange transfusionExchange transfusion
AnemiaAnemia HemorrhageHemorrhage
Feto-maternalFeto-maternal Feto-placentalFeto-placental Feto-fetalFeto-fetal Intracranial or extracranialIntracranial or extracranial Rupture of internal organsRupture of internal organs
HemolysisHemolysis PrematurityPrematurity
Treatment:Treatment: Transfuse if necessaryTransfuse if necessary
Endocrine Issues - Endocrine Issues - HypothyroidismHypothyroidism
Screen because too late for Screen because too late for proper neurodevelopment if waitproper neurodevelopment if wait
Signs:Signs: Poor feedingPoor feeding ConstipationConstipation Prolonged jaundiceProlonged jaundice Large fontanellesLarge fontanelles Umbilical herniaUmbilical hernia Dry skinDry skin
Endocrine Issues – Endocrine Issues – Ambiguous GenitaliaAmbiguous Genitalia
Congenital adrenal hyperplasiaCongenital adrenal hyperplasia 21-hydroxylase deficiency = most 21-hydroxylase deficiency = most
common enzyme abNcommon enzyme abN Signs = vomiting, diarrhea, Signs = vomiting, diarrhea,
dehydration, shock, convulsions, dehydration, shock, convulsions, clitoris or phallic enlargementclitoris or phallic enlargement
Watch for electrolyte imbalancesWatch for electrolyte imbalances If suspect, send lab tests and treat If suspect, send lab tests and treat
with steroidswith steroids
Endocrine Issues – Infant of Endocrine Issues – Infant of a Mom with Diabetesa Mom with Diabetes
Increased Risk of:Increased Risk of: Congenital malformationsCongenital malformations
• Increased incidence with poor glycemic controlIncreased incidence with poor glycemic control Growth disturbancesGrowth disturbances Metabolic disturbancesMetabolic disturbances
• Hypoglycemia, hypocalcemiaHypoglycemia, hypocalcemia Respiratory:Respiratory:
• RDS, TTNRDS, TTN Hematologic:Hematologic:
• Polycythemia Polycythemia Hyperbilirubinemia Hyperbilirubinemia Cardiovascular problems:Cardiovascular problems:
• Hypertrophic cardiomyopathyHypertrophic cardiomyopathy
HypoglycemiaHypoglycemia
Definition:Definition: BS <2.6 prem and bottle fed termBS <2.6 prem and bottle fed term BS <2.0 breastfedBS <2.0 breastfed ** No clear safe cutoff for all** No clear safe cutoff for all
Pathophysiology:Pathophysiology: Lack of supplyLack of supply Lack of reserve (low glycogen): IUGRLack of reserve (low glycogen): IUGR Inability to use/produce: metabolicInability to use/produce: metabolic Increased utilization: sepsisIncreased utilization: sepsis Increased insulin productionIncreased insulin production
HypoglycemiaHypoglycemia
Treat by supplying glucose needs:Treat by supplying glucose needs: Term: supply minimum of 4-6 Term: supply minimum of 4-6
mg/kg/minmg/kg/min Preterm: supply minimum of 6-8 Preterm: supply minimum of 6-8
mg/kg/minmg/kg/min
Look for cause … if severe or persists Look for cause … if severe or persists beyond 48-72h of lifebeyond 48-72h of life ‘‘Critical Sample’ of blood and urineCritical Sample’ of blood and urine
Asphyxia 46%Infection 17%Intracranial hemorrhage 7%Intraventricular hemorrhage 6%Infarction 6%Hypoglycemia 5%Congenital anomaly of CNS 4%Inborn errors of metabolism 4%Subarachnoid hemorrhage 2%
Neonatal seizures: EtiologyNeonatal seizures: Etiology
Thank you! Questions?