CBRN Infection Prevention & Critical Care Monitoring 2

Question 1

Which organism is most commonly responsible for burn wound sepsis in the first 72 hours post-injury?

Accepted Answer

Staphylococcus aureus

Answer

Gram-positive organisms, especially Staphylococcus aureus, predominate in the early post-burn period before gram-negative colonization occurs.

Question 2

A burn patient develops a temperature of 38.5°C on day 3. What is the most appropriate initial nursing action?

Accepted Answer

Obtain blood, wound, and urine cultures before starting antibiotics

Answer

Cultures must be collected before initiating antibiotics to identify the causative organism and guide therapy.

Question 3

What is the significance of a wound biopsy count exceeding 10^5 organisms per gram of tissue in a burn patient?

Accepted Answer

It is the threshold associated with invasive burn wound infection

Answer

A bacterial count >10^5 organisms per gram of tissue indicates invasive infection that can impede graft take and cause systemic sepsis.

Question 4

Which type of isolation is recommended for a burn patient with confirmed MRSA wound infection?

Accepted Answer

Contact precautions

Answer

Contact precautions, including gown and gloves, are required to prevent MRSA transmission via direct or indirect contact.

Question 5

A nurse observes that a burn patient's urine output has decreased to 0.3 mL/kg/hr. What does this most likely indicate?

Accepted Answer

Impending acute kidney injury

Answer

Urine output below 0.5 mL/kg/hr in a burn patient signals inadequate perfusion and risk of acute kidney injury requiring prompt intervention.

(CBRN) Certified Burn Registered Nurse Practice Test