Endoscope Reprocessing Practice Questions

Question 1

Which organism causes prosthetic valve endocarditis within 60 days of surgery?

Accepted Answer

Staphylococcus epidermidis

Answer

Staphylococcus aureus

Answer

Fungus

Answer

Streptococcus viridans

Question 2

A nurse keeps the bins as shown in the image in the hospital ward. Which of the following items would go into the black bin?

Accepted Answer

Glove paper cover

Answer

Gloves

Answer

Soiled linen bedsheet

Answer

Contaminated gloves

Question 3

Swab is discarded in which color bin

Accepted Answer

Yellow bag

Answer

White bag

Answer

Red bag

Answer

Blue bag

Answer

Green bag

Question 4

Which of the following is not a sporicidal agent?

Accepted Answer

Isopropyl alcohol

Answer

Formaldehyde

Answer

Glutaraldehyde

Answer

Ethylene oxide

Question 5

All of the sterilization methods are properly matched except?

Accepted Answer

Bronchoscope - Autoclaving

Answer

Culture media - Autoclaving

Answer

Glassware & syringes - Hot air oven

Answer

Catgut suture - Radiation

Question 6

Which is false regarding Spaulding's criteria?

Accepted Answer

Semi critical items need low level disinfection

Answer

Non critical items require only decontamination

Answer

Cardiac catheters are examples of critical items

Answer

Semi critical items are those which come in contact with mucous membrane or non intact skin

Question 7

Endoscope is sterilized by:

Accepted Answer

Glutaraldehyde

Answer

Formalin

Answer

Autoclaving

Answer

Boiling

Question 8

A 30-year-old male with a 3-month history of evening fever, night sweats, 8 kg weight loss, and haemoptysis presents to a chest clinic. He is HIV-negative. A direct sputum smear is prepared and stained (Image 2). The smear shows ≥10 acid-fast bacilli per oil immersion field averaged over 20 fields. Based on this finding, which of the following statements regarding the smear result and its clinical significance is correct?

Accepted Answer

A. The smear grade indicates ≥10 bacilli per field averaged over 20 fields, signifying high bacillary load and high infectivity

Answer

B. The smear grade indicates 1–9 bacilli per 100 fields, classified as scanty and requiring repeat testing before treatment initiation

Answer

C. The smear grade indicates 10–99 bacilli per 100 fields, classified as Grade 1+ and sufficient for treatment initiation

Answer

D. The smear grade indicates 1–10 bacilli per field averaged over 50 fields, classified as Grade 2+ and correlating with moderate bacillary load

Question 9

Which agent is used for the sterilization of a cystoscope?

Accepted Answer

Glutaraldehyde

Answer

Formaldehyde

Answer

Isopropyl alcohol

Answer

Ethylene oxide

Question 10

What is the biological indicator used for sterilization control in membrane filters?

Accepted Answer

Brevundimonas diminuta

Answer

Bacillus pumilis

Answer

Bacillus stearothermophilus

Answer

Clostridium tetani

Endoscope Reprocessing — MCQs

Endoscope Reprocessing — MCQs

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