CBM CBM Inhalation Injury & Respiratory Management 2

Question 1

Hydrogen cyanide (HCN) toxicity in burn patients most commonly results from combustion of which materials?

Accepted Answer

Synthetic polymers such as polyurethane foam and nylon

Answer

Natural cotton and wool fabrics

Answer

Untreated hardwoods

Answer

Aluminum wiring

Question 2

Which antidote is currently the preferred treatment for suspected cyanide poisoning in burn patients in the US?

Accepted Answer

Hydroxocobalamin (Cyanokit)

Answer

Sodium thiosulfate alone

Answer

Amyl nitrite inhalation

Answer

Sodium nitrite IV

Question 3

Circumferential chest burns may require escharotomy primarily because of which respiratory complication?

Accepted Answer

Inelastic eschar restricts chest wall excursion, reducing tidal volume

Answer

Eschar occludes the airway externally

Answer

Burn-induced pneumothorax

Answer

Eschar increases dead space ventilation

Question 4

Bronchoscopy is indicated in inhalation injury patients primarily to accomplish which goal?

Accepted Answer

Directly assess airway injury and clear carbonaceous debris and casts

Answer

Deliver topical antibiotics to the lower airway

Answer

Measure airway pressures

Answer

Determine the extent of alveolar damage

Question 5

A burn patient develops progressive hypoxia with bilateral infiltrates on chest X-ray 24–48 hours after injury. Which complication is most likely?

Accepted Answer

Acute Respiratory Distress Syndrome (ARDS)

Answer

Aspiration pneumonia

Answer

Pulmonary embolism

Answer

Congestive heart failure

Question 6

Nebulized heparin alternating with N-acetylcysteine (NAC) in inhalation injury patients is used to achieve which therapeutic effect?

Accepted Answer

Prevent fibrin cast formation and reduce airway obstruction

Answer

Treat secondary bacterial pneumonia

Answer

Reverse bronchospasm

Answer

Reduce alveolar surface tension