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Bowel Obstruction. Tintinalli’s Ch 86. Definition. The inability of the intestinal tract to allow for regular passage of food and bowel contents secondary to mechanical obstruction or adynamic ileus. Causes. SBO Most common cause is adhesions after abdominal surgery
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Bowel Obstruction Tintinalli’s Ch 86
Definition • The inability of the intestinal tract to allow for regular passage of food and bowel contents secondary to mechanical obstruction or adynamic ileus
Causes • SBO • Most common cause is adhesions after abdominal surgery • #2 MCC is incarceration of groin hernia • Then inflammatory bowel disease, bariatric surgery, blunt trauma • LBO • Neoplasm MCC
Pathophysiology • Intraluminal accumulation of gastric contents vomiting/decreased PO intake volume depletion electrolyte imbalance renal failure/shock • Mortality approached 70% if bowel obstruction progresses to shock
Clinical Features • Diffuse, crampy, intermittent abdominal pain • Abdominal distention • N/V • Constipation • High pitched bowel sounds in obstruction • Hypoactive BS in adynamic ileus
Work Up • CBC, BMP • WBC >20K bowel gangrene/peritonitis • Lactic Acid • Plain films • CXR for free air • Flat, upright, decub view • CT with IV and ORal
Treatment • If true mechanical obstuction Surgery • NG tube often unnecessary, but consider if severe distention and vomiting • IVF • Broad-spectrum Abx • If adynamic ileus conservative measures • IVF, observation • Dc any meds that inhibit bowel motility