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

Serum IgA anti-tTG antibody test alone

Answer

Fecal fat quantification over 72 hours

Answer

Hydrogen breath testing after gluten challenge

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

Fleet phosphosoda enema alone

Answer

Magnesium citrate combined with stimulant laxatives only

Answer

48-hour clear liquid diet without additional agents

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

Annual surveillance endoscopy without treatment

Answer

High-dose proton pump inhibitor therapy only

Answer

Discharge with dietary modification and antacids

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

Applying a dye spray for chromoendoscopy visualization

Answer

Permanently staining a polyp before removal

Answer

Marking the patient's skin above the lesion site

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

Administer a rapid IV fluid bolus of 500mL normal saline

Answer

Immediately perform endotracheal intubation

Answer

Discontinue monitoring and observe for 2 minutes

Question 6

What is the recommended surveillance colonoscopy interval after removal of a single tubular adenoma measuring less than 10mm with low-grade dysplasia?

Accepted Answer

3-5 years

Answer

6-12 months

Answer

10 years

Answer

No further colonoscopy surveillance is needed

Question 7

Which endoscopic technique is used to resect large sessile or flat polyps by injecting fluid into the submucosa before excision?

Accepted Answer

Endoscopic mucosal resection (EMR)

Answer

Push enteroscopy

Answer

Chromoendoscopy with acetic acid

Answer

Narrow band imaging (NBI)