2 - ABD Overview Flashcards
Study radiographs in sequence (ABCDEF):
Adequacy
Bones
Calcifications
Deformity / density
Extraluminal / peritoneal air
Foreign bodies / fractures
What film finding may suggest splenomegaly?
Gastric bubble displaced medially
Briefly describe CT:
Slices of the body available in axial, sagittal, or coronal views
Appears as if we are standing at the patients feet looking toward the head
Marking on the inside of the stomach
Rugae
Markings on small intestine
Plicae circulares / valvulae conniventes
Markings on the colon
Haustra
Air is expected in the stomach and colon - if it’s absent, must r/o:
Gastric outlet obstruction
If you have air in the stomach and small bowel but not the colon, must r/o:
Obstruction
Air is normally NOT seen in small intestine - if visible, must r/o:
Ileus or obstruction
Describe ileus
Impaired GI tract motility
Common after surgery (anesthesia) or irritation of the viscera
Presents c N/V, ABD pain, (-) bowel sounds
Air in stomach, small and large bowel (no flatus being passed)
Contrast does not move through to colon
Txt of ileus?
NPO, NG-tube, IV-fluid
AVOID NARCS
Prevention of ileus
Good OR technique
Minimize bowel manipulation during surgery
Replete electrolytes
What drug is given pre-op as a pro-motility drug to prevent or minimize narcotic-induced ileus?
Alvimopan (Mu blocker)
Obstruction presents with:
Pain Distention Present bowel sounds Fever Peritoneal signs
Air-fluid levels on upright films
What is open-loop obstruction?
Able to decompress (solid mass)
What is closed-loop obstruction?
Unable to decompress (volvlus / internal hernia)
How is obstruction treated?
NG tube decompression
Close observation
Fluid resuscitation
*higher incidence of surgery compared to ileus
Air seen under the right diaphragm on upright films - suspect:
Pneumoperitoneum
Air seen under left diaphragm on upright films - suspect:
Pneumoperitoneum OR possibly just a stomach bubble
Name some intraabdominal organs that can have either pathologic or benign calcifications:
Gall bladder
Kidney
Ureters
Arteries
Before giving any kind of contrast, you wanna order what labs?
BUN/Creatinine to assess kidney function