Which of the following is essential in preventing hospital-acquired infections?

Routine handwashing is essential in preventing hospital-acquired infections because it is one of the most effective methods for reducing the transmission of pathogens. Hand hygiene practices help eliminate bacteria, viruses, and other microorganisms that healthcare workers and visitors may carry on their hands, which can then be introduced into the patient environment or directly to patients.

By adhering to proper handwashing techniques, including the use of soap and water or alcohol-based hand sanitizers, healthcare providers can significantly lower the risk of infections. This is especially critical in a hospital setting, where patients may have compromised immune systems and be more susceptible to infections.

Other practices, while important, do not have the same direct impact on infection control as handwashing. Prophylactic antibiotic use can play a role in infection prevention in specific cases but is not a blanket solution and can lead to antibiotic resistance. Wearing masks is typically indicated in certain circumstances and may not be required at all times. Limiting patient mobility can also be counterproductive, as it may lead to other complications. Therefore, maintaining rigorous hand hygiene protocols remains a cornerstone of infection control efforts in healthcare settings.