NBCSN Nationally Certified School Nurse Practice Exam 2025 - Free School Nurse Certification Practice Questions and Study Guide

Regular soap and water for 20 seconds is considered the most effective method for hand hygiene due to its ability to physically remove dirt, germs, and potentially harmful microorganisms from the skin. Washing with soap creates a foamy lather that helps lift and wash away contaminants when rinsed with water. The duration of 20 seconds is specifically recommended by health organizations, such as the CDC, as it ensures sufficient time for the soap to act on the microbes, providing a thorough clean.

Using hand sanitizer without alcohol is less effective because alcohol-based sanitizers are more effective at killing germs. In scenarios where hands are visibly dirty or greasy, hand sanitizers may not be sufficient.

Washing hands for just 10 seconds with water only lacks the necessary effectiveness as water alone does not remove bacteria and viruses effectively; soap is a key component for successful hand hygiene.

Using antibacterial soap for 30 seconds with paper towels may seem appealing, but the effectiveness of antibacterial soap compared to regular soap is often debated. The real key to effective hand washing is the mechanical action combined with thorough rinsing, which is best accomplished with regular soap and water for the recommended time.