SGNA Equipment and Technology

Question 1

What does the term 'white balancing' refer to in GI endoscopy?

Accepted Answer

Calibrating the endoscope's color output against a white reference

Answer

Cleaning the scope with bleach

Answer

Testing water pressure in irrigation channels

Answer

Verifying light source function

Question 2

What is the primary advantage of high-definition (HD) endoscopy over standard-definition scopes?

Accepted Answer

Superior mucosal detail and earlier detection of subtle lesions

Answer

Lower cost

Answer

Faster procedure times

Answer

Simpler reprocessing

Question 3

During colonoscopy, the nurse notices the patient's abdomen is becoming distended and rigid. This most likely indicates:

Accepted Answer

Perforation

Answer

Normal bowel preparation effects

Answer

Sedation side effect

Answer

Polyp removal site bleeding

Question 4

What is the function of the biopsy channel in a flexible endoscope?

Accepted Answer

Allows passage of accessories (forceps, snares, needles) and specimen retrieval

Answer

Provides water irrigation only

Answer

Contains the fiber optic light bundle

Answer

Houses the air/CO2 insufflation tube

Question 5

CO2 insufflation is preferred over air insufflation during colonoscopy primarily because:

Accepted Answer

CO2 is rapidly absorbed by intestinal mucosa, reducing post-procedure bloating

Answer

CO2 improves visualization more than air

Answer

CO2 is less expensive than air

Answer

CO2 prevents perforation

Question 6

What is the purpose of fluoroscopy during ERCP procedures?

Accepted Answer

Real-time X-ray visualization of biliary and pancreatic ductal anatomy and contrast filling

Answer

Measuring bile acid levels

Answer

Assessing gastric motility

Answer

Monitoring patient's heart rate