ABSITE ch 35 small bowel.txt

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  1. Portion of duodenum with 90% of ulcers
  2. Portion of duodenum with ampulla of Vater and duct of Santorini
  3. Retroperitoneal portions of duodenum (2)
    Descending and transverse (2nd and 3rd)
  4. Blood supply of duodenum
    GDA, pancreaticoduodenals
  5. Portion of small bowel where maximal absorption occurs
  6. Portion of small bowel with long vasa recta and circular muscular folds
  7. Vascular supply to jejunum
  8. Portion of small bowel with short vasa recta
  9. GI cells that secrete mucin
    Goblet cells
  10. GI cells that contain secretory granules and enzymes
    Paneth cells
  11. GI cells that release 5-hydroxytryptamine
    Enterochromaffin cells
  12. GI cells with alkaline solution
    Brunner�s glands
  13. Lymphoid tissue in GI tract, particularly in ileum
    Peyer�s patches
  14. Antigen-preserving cells in the intestinal wall
    M cells
  15. Most important hormone in migrating motor complex (MMC)
  16. Conglomerations of TAGs, phospholipid, cholesterol and protein; released into lymphatics
  17. Primary bile acids (2)
    Cholic, chenodeoxycholic
  18. Secondary bile acids (2)
    Deoxycholic, lithocolic
  19. Test to check for B12 absorption (via radiolabeled B12 in urine)
    Schilling test
  20. Amount of small bowel needed to survive off of TPN
    75cm (50 cm if ileocecal valve competent)
  21. causes of nonhealing fistulas (7)
    foreign body, radiation, inflammatory bowel disease, epithelialization, neoplasm, distal obstruction, sepsis/infection
  22. % of fistulas that close spontaneously
  23. common causes of SBO
    hernia, adhesions, cancer
  24. % of SBO that are successfully treated conservatively
  25. air in biliary tree + SBO = ?
    gallstone ileus
  26. Meckel�s diverticulum: true or false diverticulum?
  27. Cause of meckel�s diverticulum
    Failure of closure of omphalomesenteric duct
  28. Most common ectopic tissue found in Meckel�s
  29. Most common presentation of Meckel�s in adults
  30. From most to least common, order of diverticula in each portion of small bowel
    Duodenal > jejunal > ileal
  31. First peak of Crohn�s incidence (ages)
  32. extraintestinal manifestations of Crohn�s disease
    arthritis, arthralgia, pyoderma gangrenosum, erythema nodosum, ocular diseases, growth failure, megaloblastic anemia
  33. most common anal symptom in Crohns
    anal skin tags
  34. diagnostic techniques for Crohns
    colonoscopy + biopsy, enteroclysis
  35. pathologic findings in Crohn�s
    transmural, skip lesions, cobblestoning, narrow deep ulcers, creeping fat
  36. medical treatments of Crohns (6)
    5-ASA, sulfasalazine, steroids, azathioprine, methotrexate, remicade
  37. % of Crohns patients who eventually need an operation
  38. surgical indications for Crohns (5)
    obstruction, abscess, megacolon, hemorrhage, anarectalvaginal fistulas
  39. complications from removal of terminal ileum
    dec B12 uptake, dec bile salt uptake, dec oxalate binding
  40. cell types that produce serotonin
    Kulchitsky cells
  41. Breakdown product of seratonin that can be measured in urine
  42. precursor of serotonin
  43. intermittent flushing and diarrhea caused by bulky liver mets
    carcinoid syndrome
  44. study to localize carcinoid tumor not seen on CT scan
    octreotide scan
  45. most common site for carcinoid tumor
  46. treatment of appendiceal cardinoid
    appendectomy (if <2cm), right hemicolectomy (if >2cm)
  47. medical treatment for carcinoid (3)
    streptozocin, 5FU, octreotide
  48. treatment of flushing associated with carcinoid syndrome
    alpha blockers
  49. treatment of bronchospasm in carcinoid syndrome
  50. most common benign small bowel tumor
  51. benign tumors of small bowel that most commonly occur in ileum
  52. genetic syndrome causing jejunal and ileal hamartomas, mucocutaneous melanotic skin pigmentation
    Peutz-Jeghers syndrome
  53. Most common malignant small bowel tumor
  54. Most common portion of small bowel to have adenocarcinoma
  55. Area of small bowel that most leiomyosarcomas occur
    Jejunum, ileum
  56. Area of small bowel that most lymphomas occur
  57. Most common subtype of lymphoma that occurs in small bowel
    NHL B cell type
  58. Patients predisposed to bowel lymphoma (6)
    Wegeners, SLE, Crohns, sprue, AIDS, post-transplantation
  59. Obstruction rate in loop ileostomies
  60. most common stomal infection
  61. decrease in short chain fatty acids in Hartmann�s pouch
    diversion colitis
  62. treatment of diversion colitis
    short chain fatty acid enemas
  63. most common cause of stomal stenosis
  64. most common cause of fistula near stoma site
    Crohns disease
  65. Findings on CT scan consistent with appendicitis
    Diameter >7mm, wall thickness >2mm, fat stranding, no contrast in appendiceal lumen
  66. Most likely area appendix perforates
    Midpoint of antimesenteric border
  67. Most common cause of appendicitis in children
  68. Causes of appendicitis
    Hyperplasia, facalith, cancer
  69. Treatment of walled-off perforated abscess
    Perc drainage, interval appy
  70. Most common cause of acute abdominal pain in 1st trimester
  71. Trimester when appendix is most likely to rupture (in pregnancy)
  72. % fetal mortality when appendix ruptures during pregnancy
  73. causes of ileus (6)
    surgery, electrolyte abnormalities, peritonitis, ischemia, trauma, drugs

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ABSITE ch 35 small bowel.txt
2010-01-11 16:03:02
small bowel ABSITE

ABSITE small bowel
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