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Gastric Outflow Obstruction 1225.e1

Gastric Outflow Obstruction
VetBooks.ir Chronic Gastritis Ulcer Related or

Vomiting present:
Vomiting present:
Vomiting present: variable
Vomiting present:
Vomiting present
History CHPG/AAPH Motility Disorder Related Gastric Neoplasia Extragastric
variable chronicity chronicity variable chronicity; progressive increase
intermittent in frequency
occurrence
Partially digested Partially digested food Partially digested food or Partially digested food
food bile-stained fluid or bile-stained fluid
Occurs any time after Occurs any time after Exacerbated by eating or Hematemesis common
eating eating drinking
Hematemesis may be
present
Dietary modifications
affect frequency
Abdominal distention Abdominal distention Abdominal distention Abdominal distention Abdominal distention
present present present present present
Appetite good Appetite good Appetite variable to poor Appetite variable to poor Appetite variable to poor
Body weight variable Body weight variable Weight loss, unthrifty Weight loss, unthrifty Body weight variable
May have history of acute Melena may be present Melena common; History compatible with
or gastric dilation/ abdominal pain specific extragastric
volvulus or other present disease
gastric disease or Appetite variable to poor
surgery Differentials, Lists, and Mnemonics
Physical Examination Normal to decreased Normal to decreased Slight to significant Slight to significant Signs consistent with
body condition body condition decreased body decreased body extragastric disease
condition condition
Bright, responsive Bright, responsive Normal to depressed Normal to depressed
No abdominal pain No abdominal pain Variable cranial Variable cranial
abdominal pain abdominal pain
Cranial abdominal Cranial abdominal Cranial abdominal Cranial abdominal Cranial abdominal
distention distention distention distention distention
Laboratory Findings Alkalosis Alkalosis Hypokalemia Hypokalemia Laboratory findings
Hypokalemia Hypokalemia Anemia (chronic disease, Anemia (chronic consistent with
Hypochloremia Hypochloremia blood loss, or iron disease, blood loss, extragastric disease
Hemoconcentration Hemoconcentration deficiency) or iron deficiency)
Hypoproteinemia Hypoproteinemia
AAPH, Acquired antral pyloric hypertrophy; CHPG, chronic hypertrophic pyloric gastropathy.
Modified from Slatter D: Textbook of small animal surgery, ed 3, Philadelphia, 2003, Saunders.

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