Question 4

70% isopropyl alcohol

70% isopropyl alcohol is a CDC-approved hand hygiene product effective in killing a wide range of pathogens, making it suitable for hand sanitization purposes.

A) 4% hydrogen peroxide

4% hydrogen peroxide is not considered an effective hand hygiene product according to CDC guidelines. While it has some antimicrobial properties, it is not recommended for hand sanitization due to its lower efficacy and potential for skin irritation compared to other options.

B) 6% chlorhexidine

6% chlorhexidine is primarily used in clinical settings for surgical scrubs and disinfecting skin, but it is not classified as a CDC-approved hand hygiene product for routine hand sanitization. Its application is more specialized and not as widely endorsed for general hand hygiene purposes.

C) 40% ethanol

40% ethanol does not meet the CDC recommendations for hand sanitizers, as it does not provide sufficient alcohol concentration to effectively kill viruses and bacteria. The CDC recommends a minimum of 60% ethanol for hand hygiene to ensure proper antimicrobial action.

D) 70% isopropyl alcohol

70% isopropyl alcohol is recognized by the CDC as an effective hand hygiene product for its ability to rapidly kill microorganisms when used correctly. Its concentration strikes the right balance to enhance its penetration into cells, making it a preferred choice for hand sanitization.

Conclusion

The definitive right answer is 70% isopropyl alcohol, as it is the only option that aligns with CDC guidelines for effective hand hygiene. Other options fail to meet the required efficacy or recommended concentrations, rendering them unsuitable for this purpose.