Proctitis in Emergency Medicine Workup
- Author: Lisandro Irizarry, MD, MPH, FAAEM; Chief Editor: Robert E O'Connor, MD, MPH more...
Laboratory Studies
- A complete blood count (CBC) is performed to evaluate for leukocytosis, if an infectious etiology, or severity of anemia due to blood loss.
- A sequential multiple analysis of 7 serum tests (SMA 7) is performed to evaluate for severe electrolyte/fluid losses or to look for evidence of renal insufficiency prior to initiation of medical therapy.
- C-reactive protein level is elevated in patients with extensive pancolitis but is always normal in patients with only distal disease.
- Cultures of rectal swabs help diagnose gonorrhea or chlamydia.
- Cultures of vesicular fluid or cytologic scrapings aid in the diagnosis of HSV.
- Serum Venereal Disease Research Laboratory (VDRL) test and dark field examination of scrapings from the base of the chancre reveals spirochetes and confirms the diagnosis of syphilis.
- Stool specimen for C difficile toxin.
Procedures
- Proctosigmoidoscopy reveals the following:
- Pallor or erythema
- Loss of usual vascularity of mucosa
- Prominent telangiectasia
- Friability
- Bleeding
- Ulcerations
- Edema
- Scattered areas of scarring
- Vesicles/pustules
- Strictures
- Biopsy for histology, culture, viral studies, and Chlamydia studies
- Colonoscopy to exclude more proximal involvement
- Barium studies are helpful in patients who have obstructive symptoms and are preferred in those patients suspected of having fistulas.
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