Endoscopy

Question 1

What are the components of an endoscope

Answer 1

• Tube (rigid or flexible)
• Light source
• Lenses and video

Question 2

How should an otoscope be cleaned?

Answer 2

• Clean with glutaraldehyde or chlorhexidine

Question 3

How does optical fibres achieve total internal reflection?

Answer 3

• Light is completely reflected back within the high-quality glass due to cladding

Question 4

What are the 2 types of endoscopes?

Answer 4

• Rigid
• Flexible

Question 5

What are the indications of endoscopy?

Answer 5

• Visualising lining of tissues for diagnosis e.g., neoplasia, inflammation, ulceration
• Assess normal function e.g., movement of vocal cords
• Biopsy/lavage/cytology
• Removal of foreign body/cartilage

Question 6

What are the indications for bronchoscopy?

Answer 6

• Chronic cough
• Examine structure of trachea for collapse, trauma, masses, FB and inflammation e.g., pneumonia and bronchitis