Which sterilization method is appropriate for petrolatum gauze dressing?

• A. Steam under pressure
• B. Dry heat
• C. Ethylene oxide
• D. Radiation

Answer: (B)

Dry heat is the appropriate sterilization method for petrolatum gauze dressing due to the material's sensitivity to moisture and the potential for alteration or damage under other sterilization methods. Dry heat sterilization relies on the conduction of heat through the materials, effectively killing microorganisms by maintaining a high temperature over an extended period. This method is particularly suitable for items that may be adversely affected by moisture, which can occur during steam sterilization.

Additionally, petrolatum gauze is often used in situations where a moisture-free environment is ideal, making dry heat the safest option to maintain the integrity of the material while achieving effective sterilization. The other methods, such as steam under pressure and ethylene oxide, may introduce moisture or chemical residues that could compromise the dressing’s functionality. Therefore, dry heat provides an effective, moisture-free sterilization technique suitable for petrolatum gauze dressing.