Match each patient scenario with the most appropriate tier of isolation precautions required to prevent healthcare-associated transmission.
- A 22-year-old patient evaluated in the emergency department for acute onset of fever, severe headache, nuchal rigidity, and a petechial rash.Droplet precautions
- A 45-year-old patient from a homeless shelter presenting with chronic cough, weight loss, and a cavitary upper lobe lung infiltrate.Airborne precautions
- A 78-year-old patient on the medical-surgical ward who develops severe, watery, foul-smelling diarrhea on hospital day 6 after starting ceftriaxone.Contact precautions with mandatory soap and water hand hygiene
- A 65-year-old patient transferred from a nursing facility whose routine admission surveillance swab is positive for vancomycin-resistant Enterococcus (VRE).Contact precautions with standard alcohol-based hand rub
Answer
Match suspected meningococcal meningitis to droplet precautions; pulmonary tuberculosis to airborne precautions; suspected Clostridioides difficile to contact precautions with soap and water hand hygiene; and VRE colonization to contact precautions with alcohol-based hand rub.
Each pathogen utilizes a distinct transmission mechanism necessitating specific infection control measures. Airborne precautions block small droplet nuclei (TB). Droplet precautions intercept large respiratory droplets (Neisseria meningitidis). Contact precautions prevent spread via direct contact or fomites (VRE, C. difficile). Furthermore, hand hygiene with soap and water is distinctly required for C. difficile due to its alcohol-resistant spores.
Step-by-Step Solution
Key Concept
Isolation Precaution Protocols and Pathogen-Specific Transmission Dynamics