Which of the following practices is essential in preventing healthcare-associated infections?

Proper hand hygiene is crucial in preventing healthcare-associated infections, as it is one of the most effective measures to minimize the transmission of pathogens. Hand hygiene involves the thorough cleaning of hands using soap and water or an alcohol-based hand sanitizer, which removes or kills bacteria and viruses that could otherwise spread from patient to patient or from healthcare workers to patients. High compliance with hand hygiene guidelines significantly reduces the risk of healthcare-associated infections, making it a cornerstone of infection control practices in healthcare settings.

In contrast, the other practices listed, such as using common patient items or infrequent sterilization of equipment, can increase the risk of spreading infections. Longer patient stays in the hospital can also lead to higher chances of acquiring infections, as prolonged exposure increases the risk of contact with various pathogens. Therefore, focusing on proper hand hygiene is essential to enhance the overall safety and health of patients in medical facilities.