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ATI Ostomy Care Exam 2025/2026
100 Verified Questions & Answers with Detailed
Rationales
Pass on Your First Attempt!
Exam Overview
Category Number of Questions
Pre-Operative Care & Stoma Marking 12
Stoma Assessment & Post-Op Care 14
Pouching Systems & Application 18
Dietary Management & Medications 12
Complications & Troubleshooting 16
Urostomy & Ileal Conduit Care 10
Psychosocial Adaptation & Patient Education 10
Discharge Teaching & Home Care 8
Total 100
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Section 1: Pre-Operative Care & Stoma Marking
1. A nurse is selecting a stoma site for a client scheduled for a
colostomy. Which factor is most important to consider?
A. Marking the site at the level of the belt line for easy concealment
B. Placing the stoma within the rectus abdominis muscle
C. Selecting a site on the left side of the abdomen for all colostomies
D. Choosing a site that the client cannot visualize to reduce anxiety
Correct Answer: B
Rationale: The stoma must be placed through the rectus abdominis
muscle to prevent parastomal hernias and ensure a flat surface for wafer
adherence. Sites outside this muscle significantly increase the risk of
herniation and leakage. The site should be below the belt line, visible to
the client for self-care, and tailored to the surgical procedure (ascending
vs. descending colon).
2. A preoperative nurse is marking a stoma site. Which action
demonstrates correct technique?
A. Marking the site while the client is sitting upright
B. Marking the site while the client is lying flat in bed
C. Marking the site in multiple positions (supine, sitting, standing)
D. Marking the site after the client has eaten a full meal
Correct Answer: C
Rationale: The stoma site should be marked in multiple
positions (supine, sitting, standing, and bending) to ensure the site
remains in a flat, visible area regardless of posture. This prevents placing
the stoma in a skin fold or crease that appears only when the client
moves.
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3. A client asks why the stoma site is being marked before surgery.
What is the nurse's best response?
A. "It allows the surgeon to practice the incision before the actual
surgery."
B. "It ensures the stoma is placed in an area where the pouch will adhere
properly."
C. "It is required by hospital policy for all abdominal surgeries."
D. "It helps the client visualize where the scar will be located."
Correct Answer: B
Rationale: Preoperative stoma marking is essential to select a site that
is flat, visible to the client, and free from bony prominences, scars,
and belt lines. Proper placement ensures optimal pouch adherence and
promotes independent self-care postoperatively.
4. Which client factor would contraindicate a planned stoma site in
the right lower quadrant?
A. History of Crohn's disease
B. Presence of a previous surgical scar
C. Body mass index of 32
D. Age over 65 years
Correct Answer: B
Rationale: The stoma should be placed away from previous surgical
scars, folds, and creases. Scar tissue is less vascular, may impede
healing, and creates an uneven surface that compromises pouch
adherence. The site must be on healthy, intact skin.
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5. A nurse is teaching a client about the characteristics of a healthy
stoma. Which statement should the nurse include?
A. "The stoma will be painful to touch for the first few weeks."
B. "The stoma should appear pale and dry immediately after surgery."
C. "The stoma will have a deep red, moist appearance similar to the
inside of your mouth."
D. "The stoma will shrink significantly over the first year and may turn
purple."
Correct Answer: C
Rationale: A healthy stoma is beefy red, moist, and glistening due to
its rich blood supply and mucosal tissue. It is not painful because it lacks
nerve endings. The stoma will edematous initially but will shrink over 6-
8 weeks, not turn purple (which indicates ischemia).
6. When marking a stoma site for an obese client, the nurse should
prioritize:
A. Placing the stoma above the panniculus (abdominal fold)
B. Placing the stoma within the panniculus for stability
C. Marking the site without consulting the surgeon
D. Avoiding marking until the client is under anesthesia
Correct Answer: A
Rationale: In obese clients, the stoma must be placed above the
panniculus (abdominal fold) so the client can see and access it for self-
care. If placed within the fold, the pouch will not adhere, and the client
cannot perform independent care.
7. A client with a history of recurrent urinary tract infections is
scheduled for a cystectomy with ileal conduit. The nurse should
ATI Ostomy Care Exam 2025/2026
100 Verified Questions & Answers with Detailed
Rationales
Pass on Your First Attempt!
Exam Overview
Category Number of Questions
Pre-Operative Care & Stoma Marking 12
Stoma Assessment & Post-Op Care 14
Pouching Systems & Application 18
Dietary Management & Medications 12
Complications & Troubleshooting 16
Urostomy & Ileal Conduit Care 10
Psychosocial Adaptation & Patient Education 10
Discharge Teaching & Home Care 8
Total 100
,2|Page
Section 1: Pre-Operative Care & Stoma Marking
1. A nurse is selecting a stoma site for a client scheduled for a
colostomy. Which factor is most important to consider?
A. Marking the site at the level of the belt line for easy concealment
B. Placing the stoma within the rectus abdominis muscle
C. Selecting a site on the left side of the abdomen for all colostomies
D. Choosing a site that the client cannot visualize to reduce anxiety
Correct Answer: B
Rationale: The stoma must be placed through the rectus abdominis
muscle to prevent parastomal hernias and ensure a flat surface for wafer
adherence. Sites outside this muscle significantly increase the risk of
herniation and leakage. The site should be below the belt line, visible to
the client for self-care, and tailored to the surgical procedure (ascending
vs. descending colon).
2. A preoperative nurse is marking a stoma site. Which action
demonstrates correct technique?
A. Marking the site while the client is sitting upright
B. Marking the site while the client is lying flat in bed
C. Marking the site in multiple positions (supine, sitting, standing)
D. Marking the site after the client has eaten a full meal
Correct Answer: C
Rationale: The stoma site should be marked in multiple
positions (supine, sitting, standing, and bending) to ensure the site
remains in a flat, visible area regardless of posture. This prevents placing
the stoma in a skin fold or crease that appears only when the client
moves.
,3|Page
3. A client asks why the stoma site is being marked before surgery.
What is the nurse's best response?
A. "It allows the surgeon to practice the incision before the actual
surgery."
B. "It ensures the stoma is placed in an area where the pouch will adhere
properly."
C. "It is required by hospital policy for all abdominal surgeries."
D. "It helps the client visualize where the scar will be located."
Correct Answer: B
Rationale: Preoperative stoma marking is essential to select a site that
is flat, visible to the client, and free from bony prominences, scars,
and belt lines. Proper placement ensures optimal pouch adherence and
promotes independent self-care postoperatively.
4. Which client factor would contraindicate a planned stoma site in
the right lower quadrant?
A. History of Crohn's disease
B. Presence of a previous surgical scar
C. Body mass index of 32
D. Age over 65 years
Correct Answer: B
Rationale: The stoma should be placed away from previous surgical
scars, folds, and creases. Scar tissue is less vascular, may impede
healing, and creates an uneven surface that compromises pouch
adherence. The site must be on healthy, intact skin.
, 4|Page
5. A nurse is teaching a client about the characteristics of a healthy
stoma. Which statement should the nurse include?
A. "The stoma will be painful to touch for the first few weeks."
B. "The stoma should appear pale and dry immediately after surgery."
C. "The stoma will have a deep red, moist appearance similar to the
inside of your mouth."
D. "The stoma will shrink significantly over the first year and may turn
purple."
Correct Answer: C
Rationale: A healthy stoma is beefy red, moist, and glistening due to
its rich blood supply and mucosal tissue. It is not painful because it lacks
nerve endings. The stoma will edematous initially but will shrink over 6-
8 weeks, not turn purple (which indicates ischemia).
6. When marking a stoma site for an obese client, the nurse should
prioritize:
A. Placing the stoma above the panniculus (abdominal fold)
B. Placing the stoma within the panniculus for stability
C. Marking the site without consulting the surgeon
D. Avoiding marking until the client is under anesthesia
Correct Answer: A
Rationale: In obese clients, the stoma must be placed above the
panniculus (abdominal fold) so the client can see and access it for self-
care. If placed within the fold, the pouch will not adhere, and the client
cannot perform independent care.
7. A client with a history of recurrent urinary tract infections is
scheduled for a cystectomy with ileal conduit. The nurse should
