Lower Endoscopy Procedures Flashcards
6 cards from real CGRN practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Lower Endoscopy Procedures flashcards as text
During colonoscopy with CO2 insufflation, the patient develops abdominal distention and discomfort. What is the most likely cause?
Answer: Excessive insufflation rate
Even with CO2, excessive insufflation can cause distention if the rate exceeds absorption.
What is the recommended surveillance interval after removing 3-4 tubular adenomas, each less than 10 mm, with low-grade dysplasia?
Answer: 3 years
According to USMSTF guidelines, 3-4 tubular adenomas <10 mm warrant surveillance in 3 years.
Which position change can help advance the colonoscope through a difficult sigmoid colon?
Answer: Left lateral to supine or right lateral position
Changing from standard left lateral to supine or right lateral can straighten the sigmoid colon.
What is post-polypectomy electrocoagulation syndrome?
Answer: Transmural thermal injury causing peritoneal irritation without full perforation
Electrocautery causes full-thickness thermal injury producing peritoneal irritation without frank perforation.
During colonoscopy, bright red blood obscures the view. What is the nurse's priority action?
Answer: Irrigate the area and assist with hemostasis while monitoring vital signs
Irrigate to restore visualization, assist with hemostasis, and monitor vital signs.
What is the minimum acceptable adenoma detection rate (ADR) for screening colonoscopies?
Answer: 25%
The minimum benchmark is 25% overall (30% for men, 20% for women).