CGRN Lower Endoscopy Procedures 3

Question 1

During colonoscopy with CO2 insufflation, the patient develops abdominal distention and discomfort. What is the most likely cause?

Accepted Answer

Excessive insufflation rate

Answer

Even with CO2, excessive insufflation can cause distention if the rate exceeds absorption.

Question 2

What is the recommended surveillance interval after removing 3-4 tubular adenomas, each less than 10 mm, with low-grade dysplasia?

Accepted Answer

3 years

Answer

According to USMSTF guidelines, 3-4 tubular adenomas <10 mm warrant surveillance in 3 years.

Question 3

Which position change can help advance the colonoscope through a difficult sigmoid colon?

Accepted Answer

Left lateral to supine or right lateral position

Answer

Changing from standard left lateral to supine or right lateral can straighten the sigmoid colon.

Question 4

What is post-polypectomy electrocoagulation syndrome?

Accepted Answer

Transmural thermal injury causing peritoneal irritation without full perforation

Answer

Electrocautery causes full-thickness thermal injury producing peritoneal irritation without frank perforation.

Question 5

During colonoscopy, bright red blood obscures the view. What is the nurse's priority action?

Accepted Answer

Irrigate the area and assist with hemostasis while monitoring vital signs

Answer

Irrigate to restore visualization, assist with hemostasis, and monitor vital signs.

CGRN - Certified Gastroenterology Registered Nurse Practice Test