NICU

Constipation Causes in Infants

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Constipation Causes in Infants, Constipation Causes in Newborns, Neonatal Constipation Causes, Failure to Pass Meconium

  • General
  1. Constipation has functional cause in >95% of infants
  • Constipation Causes
  • Organic
  1. Neurologic Causes
    1. Hirschprung's Disease
      1. Consider if no meconium stool by 48 hours old
    2. Spinal Dysraphism (Myelomeningocele, Spina bifida)
    3. Encephalopathy
  2. Endocrine Causes
    1. Hypothyroidism
    2. Hypokalemia
    3. Diabetes Insipidus
    4. Hypercalcemia
  3. Miscellaneous causes
    1. Congenital Anorectal malformation
    2. Heavy-metal Poisoning
    3. Cystic Fibrosis
  • Failure to Pass Meconium Causes (first 24-48 hours)
  1. Meconium Plug Syndrome (1-2 in 1000)
  2. Cystic Fibrosis (1 in 2800)
  3. Hirschsprung's Disease (1 in 5000)
  4. Anorectal Malformation (1-2 in 8000)
  5. Other rare disorders
    1. Hypoganglionosis
    2. Small left colon syndrome