CGRN Lower Endoscopy Procedures 4

Question 1

On the Boston Bowel Preparation Scale (BBPS), which result is generally considered an adequate preparation?

Accepted Answer

Total score of 6 or more with each segment scoring at least 2

Answer

The BBPS scores three segments 0-3, and adequacy is typically defined as a total of 6 or more with no segment below 2.

Question 2

Which endoscopic landmarks confirm cecal intubation during colonoscopy?

Accepted Answer

Appendiceal orifice and ileocecal valve

Answer

Cecal intubation is documented by seeing the appendiceal orifice and ileocecal valve, ideally with photos.

Question 3

During colonoscopy the patient becomes diaphoretic and bradycardic with a heart rate of 42 while the scope is being advanced through a sigmoid loop. What should the nurse do first?

Accepted Answer

Tell the endoscopist so the loop can be reduced or the scope pulled back

Answer

Stretching the mesentery by looping can trigger a vasovagal reaction, so the first step is relieving the loop.

Question 4

What is the main advantage of CO2 insufflation over room air during colonoscopy?

Accepted Answer

Less post-procedure abdominal pain and bloating because CO2 is absorbed quickly

Answer

CO2 is absorbed through the bowel wall much faster than air, which reduces post-procedure distension and discomfort.

Question 5

A patient calls 10 days after a hot snare polypectomy of a 2 cm polyp to report passing bright red blood per rectum. What is the best interpretation?

Accepted Answer

Possible delayed post-polypectomy bleeding that needs prompt evaluation

Answer

Delayed bleeding can happen up to about 2-4 weeks after polypectomy, when the eschar sloughs, and needs urgent assessment.

CGRN - Certified Gastroenterology Registered Nurse Practice Test

CGRN - Certified Gastroenterology Registered Nurse Practice Test

CGRN Lower Endoscopy Procedures 4