GI Diagnostic Procedures and Endoscopy

Question 1

Which bowel preparation is most commonly used before colonoscopy in the United States?

Accepted Answer

Polyethylene glycol (PEG) electrolyte solution

Answer

Sodium phosphate enema only

Answer

Castor oil

Answer

Saline laxative tablets alone

Question 2

The Boston Bowel Preparation Scale (BBPS) scores each of the three colon segments from 0 to 3; what is the minimum acceptable total score for an adequate colonoscopy?

Accepted Answer

6

Answer

3

Answer

5

Answer

9

Question 3

During upper endoscopy (EGD), the Z-line (squamocolumnar junction) is normally located at approximately how many centimeters from the incisors?

Accepted Answer

35–40 cm

Answer

25–30 cm

Answer

40–50 cm

Answer

50–55 cm

Question 4

Capsule endoscopy is considered the first-line test for suspected bleeding in which GI region?

Accepted Answer

Small bowel (mid-GI)

Answer

Esophagus

Answer

Stomach

Answer

Rectum

Question 5

Endoscopic retrograde cholangiopancreatography (ERCP) is considered first-line therapy for which condition?

Accepted Answer

Common bile duct stones (choledocholithiasis)

Answer

Pancreatic pseudocyst drainage

Answer

Suspected cholangiocarcinoma biopsy only

Answer

Screening for pancreatic cancer

Question 6

Which finding on colonoscopy requires removal and is considered a premalignant lesion?

Accepted Answer

Tubular adenoma

Answer

Hyperplastic polyp <5 mm in the rectum

Answer

Subepithelial lipoma

Answer

Normal mucosa with prominent vessels