What is the best way to prevent hospital acquired infection?

RML Lucknow - 2021

Applied Microbiology & Infection control

Easy

Appeared in: RML Lucknow - 2021

Explanation

Handwashing is the single most effective, low-cost, and universally applicable measure to prevent the transmission of pathogens in a healthcare setting.
It directly interrupts the most common route of transmission for HAIs, which is through the hands of healthcare workers (direct contact).
The WHO's '5 Moments for Hand Hygiene' provides a clear, evidence-based framework for when this critical action should be performed to maximize patient safety.
Unlike other options, hand hygiene is a primary preventive measure that is non-invasive and does not carry risks like antibiotic resistance.

Option A: Routine use of prophylactic antibiotics is not recommended for general HAI prevention as it promotes the development of antibiotic-resistant organisms and can cause adverse effects.
Option B: Measuring the total leukocyte count (TLC) is a diagnostic action to monitor for the presence of an infection, not a preventive measure to stop an infection from occurring.
Option D: UV sterilization is a supplemental environmental disinfection method. It cannot be used continuously in occupied rooms and does not replace the need for foundational practices like hand hygiene and surface cleaning.

Clinical Relevance

Nursing practice connection: Knowing Prevention of Hospital-Acquired Infections (HAIs) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Failure to perform hand hygiene is a leading cause of preventable HAIs, which increase patient morbidity, mortality, length of stay, and healthcare costs.
Nurses are at the forefront of patient care and have the most opportunities to perform hand hygiene; they act as role models and advocates for infection control practices among the healthcare team, patients, and visitors.
What if? If a patient is diagnosed with a Clostridioides difficile infection, the correct hand hygiene practice changes. Alcohol-based hand rubs are ineffective against C. difficile spores. Therefore, handwashing with soap and water is mandatory after every contact with the patient or their environment.

How to Approach the Question

First, identify the core of the question: it asks for the 'best' or most effective method of prevention.
Analyze each option based on its role in infection control: Is it a primary prevention, secondary prevention (screening), or a supplemental measure?
Evaluate the impact and applicability of each option. Handwashing is a universal, primary prevention strategy that targets the most common mode of transmission.
Consider the risks and limitations. Prophylactic antibiotics have the significant risk of promoting resistance. UV light has limited application (unoccupied rooms). Leukocyte counts are for diagnosis, not prevention.
Conclude that handwashing is the most fundamental, effective, and widely applicable strategy, making it the 'best' answer.

Concept Tested & Keywords

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E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart C (pp 404-604 of 604) pp. 26-28, 27-29