These OMS practice questions target procedures — including Indiana Pouch. The complete OMS deck holds 1020 flashcards, 160 of them dedicated to this topic. Study the free samples below, then unlock the whole collection for a one-time $7.
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A patient has a new transverse loop colostomy with a plastic rod in place. What is the primary purpose of this rod, and when is it typically removed according to 2026 NAWCO standards?
Show answer →The rod (or bridge) supports the loop of bowel on the abdominal surface, preventing it from retracting into the peritoneal cavity during the initial healing phase (7-14 days). OMS Strategy: NAWCO emphasizes that while some surgeons are moving away from rods, they remain a standard test topic. If the rod is removed too early, retraction risk increases. If left too long, it hinders pouching and increases skin pressure. Key Point: Usually removed after 5-7 days or once the loop is adhered to the fascia. Always check the surgeon's order.
A J-pouch patient 4 months post-takedown presents with 12 liquid stools daily, tenesmus, and pelvic pain. Pouchoscopy shows diffuse erythema and friability. What is the first-line evidence-based pharmacological treatment?
Show answer →This is a classic presentation of Pouchitis, the most common IPAA complication (affecting ~50% of UC patients). First-line treatment is a 14-day course of antibiotics, specifically Ciprofloxacin (500mg BID) or Metronidazole (250-500mg TID). Rationale: These target the dysbiosis within the reservoir. Exam Tip: If symptoms persist despite antibiotics, consider Cuffitis (inflammation of the rectal cuff), which requires topical mesalamine rather than oral antibiotics.
Which metabolic derangement is most common in patients with an Indiana Pouch, and what is the underlying physiological mechanism?
Show answer →**Hyperchloremic metabolic acidosis.** The colonic mucosa reabsorbs ammonium (NH4+) and chloride (Cl-) from the stored urine in exchange for bicarbonate (HCO3-). This leads to a net loss of base. Management includes oral sodium bicarbonate if severe. Chronic acidosis can lead to bone demineralization (osteomalacia) over time. Key Exam Point: Monitor serum chloride and CO2 levels.
What are the expected stool characteristics and daily output volume for a mature end colostomy following an APR once the patient is on a stable diet?
Show answer →Stool should be formed to semi-formed (pasty) consistency. The expected volume is 200–600 mL per day. Unlike ileostomies, colostomies have a lower risk of dehydration but a higher risk of constipation. OMS Exam Tip: If output exceeds 1000mL/day in a colostomy, investigate for proximal issues or infection, as this is abnormal for the large bowel. Distinguish this from the 500-1200mL expected from an ileostomy.
What is the recommended height for an everted urostomy stoma, and what is the rationale for this specific measurement?
Show answer →The recommended height is **2 to 3 cm**. Because urine is liquid and constant, a prominent eversion is required to ensure urine is directed into the pouching system. Without this height, capillary action can pull urine under the barrier, leading to rapid adhesive failure and **encrustations** (alkaline crusts) on the peristomal skin. **NAWCO Key Point:** Urostomies are almost always budded/everted for this reason.
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Try 30 free OMS cards firstThe full OMS deck contains 1020 flashcards, and 160 of them focus on procedures. This page shows 5 free samples.
Our OMS deck dedicates 160 of 1020 cards (16%) to procedures — always cross-check the official NAWCO exam outline for the current blueprint weighting.
Yes — the samples on this page are free, and the OMS preview page has 30 more free cards. Full access to all 1020 cards is a one-time $7.
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