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15 Cards in this Set
- Front
- Back
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What is the significance of an air-fluid level?
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An air-fluid level suggests an increase in the luminal diameter (distention), as seen in obstruction or ileus.
The lumen becomes wide enough for the air and fluid to separate, forming an air-fluid level. |
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How can you tell the difference between a small bowel obstruction and ileus?
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A bowel obstruction will have a transition point, or a point at which the distended bowel proximal to the distention becomes the distal bowel of normal caliber.
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What is a transition point?
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In small bowel obstruction, the transition point is the point at which the distended proximal bowel becomes the distal bowel of normal caliber.
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Where does peritoneal fluid accumulate in the supine position?
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The hepatorenal recess (a potential space between the R kidney and liver).
The hepatorenal recess is also known as Morison's pouch. |
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What is a KUB?
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A KUB is a plain, frontal, supine radiograph of the abdomen.
KUB stands for kidney, ureters, and bladder, though it's not usually used to assess these structures. In other words, a KUB is a plain old abdominal x-ray. |
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What are sentinel loops?
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Distention or air-fluid levels (or both) near a site of abdominal inflammation.
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What is the best imaging technique for identifying free air in the abdomen?
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Upright CHEST x-ray
Free air can be visualized under the R hemidiaphragm. |
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What is the best test to evaluate the biliary system and gallbladder?
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Ultrasound (U/S)
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What U/S findings are associated with acute cholecystitis?
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Gallstones, either in the bladder or in the cystic duct.
Distended gallbladder Thickening of the gallbladder wall Fluid in the area |
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What's the difference between an upper-GI series and a small bowel follow-through?
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What are the indications for an upper GI series?
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What are the indications for small bowel follow-through.
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What is a small bowel follow-through?
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Contrast (usually barium) is swallowed or instilled into the stomach through a nasogastric (NG) tube. Abdominal radiographs are then taken serially as the contrast travels distally in the intestine.
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What is an "abdominal series"?
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An abdominal series includes a supine AXR, an upright AXR, and an upright CXR.
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Barium enema...
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