GI Endoscopy & Procedural Care 2

Question 1

What is the gold standard diagnostic method for confirming celiac disease?

Accepted Answer

Small bowel biopsy via upper endoscopy showing villous atrophy

Answer

Small bowel biopsy obtained via upper endoscopy demonstrating villous atrophy, crypt hyperplasia, and increased intraepithelial lymphocytes remains the gold standard for celiac disease diagnosis.

Question 2

Which bowel preparation agent is most widely recommended before colonoscopy due to its safety profile?

Accepted Answer

Polyethylene glycol (PEG) electrolyte solution

Answer

Polyethylene glycol (PEG) electrolyte solution provides effective bowel cleansing with minimal electrolyte disturbances, making it safe across most patient populations including those with renal or cardiac disease.

Question 3

Barrett's esophagus with high-grade dysplasia is found on EGD. What is the most appropriate next intervention?

Accepted Answer

Endoscopic eradication therapy such as radiofrequency ablation

Answer

High-grade dysplasia in Barrett's esophagus requires endoscopic eradication therapy (e.g., radiofrequency ablation or endoscopic mucosal resection) due to significant risk of progression to adenocarcinoma.

Question 4

In colonoscopy practice, what does 'tattooing' a lesion mean?

Accepted Answer

Injecting India ink adjacent to a lesion to mark its location for future identification

Answer

Colonic tattooing involves submucosal injection of India ink or a similar permanent marker adjacent to a lesion so it can be reliably identified during subsequent colonoscopy or surgery.

Question 5

A patient develops oxygen desaturation to 88% during upper endoscopy with conscious sedation. What is the first intervention?

Accepted Answer

Administer supplemental oxygen and stimulate the patient to breathe

Answer

Supplemental oxygen and physical stimulation (jaw thrust, verbal stimulation) are the first-line interventions for desaturation during conscious sedation, following a stepwise airway management approach.

(GI) Gastrointestinal Practice Test

(GI) Gastrointestinal Practice Test

GI Endoscopy & Procedural Care 2