Question 22 TK02 - Tank Vessel Assistant - Liquefied Gas

The Correct Answer is C **Explanation for Option C (Correct):** The proper immediate treatment for frostbite resulting from a cryogenic burn is rapid rewarming. The goal is to minimize further tissue damage caused by ice crystal formation. The most effective method is to immerse the affected area (if possible) in a water bath maintained at a controlled temperature, typically between $104^{\circ}\text{F}$ and $108^{\circ}\text{F}$ ($40^{\circ}\text{C}$ to $42^{\circ}\text{C}$), until the area becomes soft and sensation returns. This method provides consistent, controlled, and rapid heat transfer. **Why the Other Options Are Incorrect:** * **A) Compress the affected area with cryogenic burn heat wrap:** Compression can exacerbate tissue injury by impeding circulation. Furthermore, a "cryogenic burn heat wrap" is not standard or recommended medical practice; rewarming must be done in a controlled manner. * **B) Apply ice to the area and gradually warm:** Applying ice is absolutely contraindicated. The injury is already caused by extreme cold (frostbite); adding more cold will worsen tissue damage and deepen the freezing. Gradual warming is also incorrect because it allows more time for cellular damage to occur compared to rapid rewarming. * **D) Massage the affected area:** Massaging or rubbing frostbitten tissue is strictly prohibited. The tissue contains ice crystals, and mechanical manipulation can cause severe damage to already fragile cell membranes and underlying structures.