CBIC Isolation Precautions 2 — Questions and Answers
Question 1: A patient with active pulmonary tuberculosis is admitted. Which combination of precautions is required?
- Standard + Contact Precautions
- Standard + Droplet Precautions
- Standard + Airborne Precautions (Correct answer)
- Contact + Droplet Precautions
Correct answer: Standard + Airborne Precautions
Active pulmonary TB requires Airborne Precautions in addition to Standard Precautions due to droplet nuclei transmission.
Question 2: Which personal protective equipment (PPE) must be donned FIRST when preparing to enter a Contact Precautions room?
- Gloves
- Gown (Correct answer)
- Mask
- Eye protection
Correct answer: Gown
The gown should be donned first so that gloves can be placed over the gown cuffs, ensuring complete coverage.
Question 3: A nurse cares for a patient on Droplet Precautions and then enters another patient's room without removing PPE. This is an example of:
- Contact transmission (Correct answer)
- Common vehicle transmission
- Airborne transmission
- Vector-borne transmission
Correct answer: Contact transmission
Carrying contaminated PPE from one patient to another constitutes contact transmission via a contaminated vehicle (the healthcare worker).
Question 4: When caring for a patient on Airborne Precautions, staff must wear at minimum:
- Surgical mask
- N95 or higher respirator (Correct answer)
- Powered air-purifying respirator (PAPR)
- Double surgical masks
Correct answer: N95 or higher respirator
An N95 respirator (or higher) is the minimum respiratory protection required for Airborne Precautions.
Question 5: A patient with Clostridioides difficile infection is placed on Contact Precautions. Which hand hygiene agent is MOST appropriate after removing gloves?
- Alcohol-based hand rub
- Soap and water (Correct answer)
- Chlorhexidine hand rub
- Povidone-iodine scrub
Correct answer: Soap and water
Soap and water is preferred for C. difficile because alcohol-based hand rubs do not effectively eliminate C. difficile spores.
Question 6: Which of the following infections requires Droplet Precautions?
- Varicella (chickenpox)
- Measles
- Influenza (Correct answer)
- Pulmonary tuberculosis
Correct answer: Influenza
Influenza is transmitted via respiratory droplets (>5 µm) and therefore requires Droplet Precautions.
Question 7: The recommended air exchange rate for a negative-pressure isolation room used for Airborne Precautions is at least:
- 4 air changes per hour (ACH)
- 6 ACH
- 12 ACH (Correct answer)
- 20 ACH
Correct answer: 12 ACH
CDC/HICPAC guidelines recommend a minimum of 12 ACH for airborne infection isolation rooms.
CBIC Isolation Precautions 2
A patient with active pulmonary tuberculosis is admitted.
Which combination of precautions is required?