CH 62

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Author:
rbeacr
ID:
150764
Filename:
CH 62
Updated:
2012-04-28 18:34:04
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Fetal Abdomen
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Fetal Abdomen
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  1. three sections of primative abdomen
    • foregut
    • midgut
    • hindgut
  2. forgut forms
    • pharynx
    • lower respiratory
    • esophagus
    • stomach
    • part of duodenum
    • liver
    • biliary
    • panc
  3. esophageal atresia
    • tracheoesophageal fistula
    • abnormal deviation of septum posteriorly
    • amniotic fluid cant pass to intestines- poly
  4. esophageal stenosis
    • narrowing of esophagus
    • in distal 3rd
    • incomplete recanalization in 8th week
  5. lesser sac and peritoneal sac communicate through
    epiploic foramen
  6. duodenal stenosis/ atresia
    • narrowing
    • atresia- blockage
    • 3rd or 4th part
  7. hemopoietic formation in what week
    • 6th
    • increase liver size in 7th-9th
    • kuffer cells
  8. biliary atresia
    interference of blood supply to ducts and infection
  9. cystic fibrosis causes
    • echogenic fibrous panc and bowel
    • autosomal recessive
    • panc disease respiratory problems
  10. mid gut forms
    • small intestines
    • cecum
    • cloaca exstrophy
    • ascending colon
    • transverse colon
    • sma blood supply
  11. meckels diverticulum
    • most common midgut malformation
    • remant of prox yolk sac fails to degenerate
    • 5cm
    • looks like appendix from illeum
  12. hind gut
    • transverse colon
    • desending colon
    • sigmoid colon
    • rectum
    • superior anal canal
    • bladder
    • urethara
    • ima blood supply
  13. if no stomach
    • esophageal atresia
    • disphragmatic hernia
    • facial cleft
    • cns disorder
    • swallowing disorder
    • oligo from other causes
  14. double bubble
    • duodenal atresia
    • duodenal stenosis
    • annular panc
    • ladds bands
    • prox jejunal atreasia
    • malrotation
    • diaphragmatic hernia
  15. mass in stomach
    placetntal abruption with hematoma formation and hemmorage in amnion
  16. meconium
    • 15-16th week acuumulates in small intestine
    • bile, cells, mucoprotiens

    meconium stain- gets into fluid and into lungs
  17. large bowel distinct from small bowel at
    20 weeks
  18. which bowel has peristalsis
    small
  19. liver is what % weight
    • 10% 11 weeks
    • 5% at term
  20. what lobe bigger
    • left due to increased o2 in blood
    • revereses at birth
  21. liver enlarges with
    rh immune disease from increased blood production
  22. most common hepatic tumor
    • hemangioendothelioma
    • rare
    • symptomatic and vascular
    • can cause immune hydrops
  23. liver calcifications
    • infection
    • 5% of tumors
  24. what situs is more severe
    partial
  25. types of partial
    • asplenia
    • poly splenia
  26. asplenia
    • no spleen
    • midline stomach and gb
    • more central liver
    • so and ivc on same side
    • 90-95% death
  27. poly spelenia
    • more than one spleen
    • liver spleen and stomach transposed no gb
    • 2 spleens at greater curve of stomach
    • 80% death
  28. cardiac malformations more common in which situs
    asplenia
  29. pseudo ascites
    • GI obstruction- bowel perforation
    • non GI- immune and non immune hydrops, UT obstruction, infection, abd tumor
  30. pseduo ascites never
    outlines falciform ligament like true ascites
  31. cholelitiasis
    • stones common in fetus
    • resolve in utero ir childhood
    • often in high fat diet of premie
  32. choledocal cysts
    • dilated bile duct
    • gb more aterior than duodenum and cyst near gb (bile duct)
  33. agenisis of gb in how many cases
    20%
  34. spleen and liver enlarge in fetus with
    rh immune disease
  35. esophageal atresia occurs in
    1 in 2500 births
  36. 30% of fetuses with duodenal atresia have
    trisomy 21
  37. surgery after birth with duod atreasia to
    connect stomach to jejunm bypass obstruction
  38. what is more common than dudodenal atresia
    jejunum illeum or both atresia or stenosis
  39. the more distal the bowel obstruction
    the less severe the hydraminos and the later it develops
  40. echogenic bowel
    downs tris 21
  41. normal colon increases diameter after 23 weeks but never over
    18mm
  42. meconium ileus
    • small bowel disorder
    • thick meconium in distal ileum
    • earliest manifest of cystic fibrosis
  43. anorectal atresia
    • membrane covers anus
    • poor prognosis from associated anomolies
  44. Hirschsprungs disease
    mega colon
  45. meconium peritonitis
    hydramonis

    • sterile peritonistis from bowel perforation
    • calcifications with cystic fibrosis
  46. hyperechoic bowel
    • 2nd trimester
    • decreased water content
    • hypoperistalsis
    • 3 grades
    • mild, moderate, very echogenic
  47. ascites
    • cyst like appearence of abdomen from fluid between unfused omentum
    • bowel perforation
    • bladder rupture
    • outlines falciform ligament
  48. cystic masses of abdomen
    only a problem in compress organs

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