Which of the following disinfectants is primarily used for stethoscopes and ventilators?

The choice of 70% ethyl alcohol as the primary disinfectant for stethoscopes and ventilators is based on its effectiveness as a broad-spectrum antimicrobial agent. Ethyl alcohol in this concentration is known to be highly effective against bacteria, viruses, and fungi, making it suitable for disinfecting surfaces that come into contact with patients.

Using 70% ethyl alcohol is particularly advantageous because it evaporates quickly, which minimizes the risk of residual moisture that could foster microbial growth. It also does not leave behind harmful residues that could interfere with the function of medical equipment, unlike some other disinfectants.

Additionally, the safety profile of 70% ethyl alcohol makes it a desirable option for regular use, as it is less likely to cause adverse reactions in patients compared to harsh chemicals. This is particularly important when disinfecting items like stethoscopes and ventilators that have direct contact with patients and sensitive mucous membranes.

In contrast, while other options like chlorine products, phenolics, and iodophors have their places in disinfection, they may not be as suitable for the specific context of stethoscopes and ventilators due to factors like harshness, residue concerns, and potential damage to sensitive materials used in these devices.