Diseases of the Large Intestine Flashcards
Recognizing colonic dz
↑ frequency
Small amounts of feces
Straining to defecate
Mucosal damage
Jelly like mucus
Exudate + leukocytes
Dx of colitis
Fecal floats/ exam, rectal scrape
Therapeutic deworming
Imaging: rads, US, colonoscopy
Therapeutic diet trial
Differentials of colitis
Extraintestinal causes of hemorrhagic diarrhea (addisons, chr. pancreatitis)
Colonic neoplasia or obstructions (intuss or torsion)
Constipation
Acute colitis
From trauma (bones, chew toys, foreign material)
Dietary or idiopathic
Self-limiting (dietary trial 6w)
Whipworms
Trichuris vulpis
Hatch to the SI → cecum or colon
Fecal-oral transmission
CS of whipworms
Tenesmus, mucoid feces, hematochezia
Lab results of whipworms
CBC: anemia, hypoproteinemia, eosinophilia
Chem: ↑ K+, ↓ Na
Fecal float, baerman technique
Tx for whipworms
Fenbendazole(initial, 3w then 3m), pyrantel, fenbantel
Milbemycin oxime monthly
Giardiasis
Giardia lambilia
Asymptomatic or mixed diarrhea (acute, mild, self-limiting)
Severe: chr., protein losing and WL
Fecal- oral transmission in puppies and kittens
Giardiasis tx
Metro, fenbendazole, pyrantel
Environmental hygiene
Dietary therapy with chr. severe dz
Trichomoniasis
Tritrichomonas foetus
Direct transmission
Coinfection with giardia
Immunosuppression, kittens and adults
CS of trichomoniasis
Semi-formed stools to bloody diarrhea
Fecal incontinence
Edematous painful anus
Rectal prolapse
Waxing and waning of signs
Dx and tx of trichomoniasis
Fecal smear, in-pouch culturing system, PCR
Ronidazole (2w)
Histoplasmosis
Histoplasma capsulatum: saprophytic soil fungus inhaled
Endemic in MS, OH and MI
CS of histoplasmosis
GI, resp, ocular, CNS, systemic (fever and anorexia), lymphadenopathy