A nurse is caring for a patient with methicillin-resistant Staphylococcus aureus (MRSA) pneumonia in the intensive care unit. Which intervention should the nurse prioritize to prevent transmission of MRSA to other patients?

Contact precautions with gown and gloves are prioritized for MRSA to prevent transmission via direct contact or contaminated surfaces. Other options are insufficient: surgical masks don't prevent contact spread, standard precautions alone are inadequate, and hand hygiene must be performed before and after contact.

Core Nursing Explanation Key Concept Analysis: This question tests the application of Transmission-Based Precautions for a specific multidrug-resistant organism (MDRO). The core theme is understanding how Methicillin-resistant Staphylococcus aureus (MRSA) is transmitted and selecting the correct isolation protocol to prevent its spread in a healthcare setting. MRSA is primarily spread via contact transmission (direct contact with the patient or indirect contact with contaminated surfaces/equipment).

Answer Rationale: Key Point! For patients with MRSA infection or colonization, the Centers for Disease Control and Prevention (CDC) guidelines mandate Contact Precautions. This involves placing the patient in a private room (or cohorting with another MRSA patient) and using gown and gloves for all interactions that may involve contact with the patient or their environment. This is the priority intervention to create a barrier against transmission. Option ③ correctly specifies this protocol.

Distractor Analysis: Watch out for confusion! Option ① (Wear a surgical mask) is a component of Droplet Precautions for pathogens like influenza, not for MRSA. MRSA pneumonia does not require droplet precautions for routine care unless an aerosol-generating procedure is being performed.
Option ② (Private room with standard precautions) is insufficient. While a private room is correct, Standard Precautions are used for all patients but are not enough for organisms spread by contact transmission. MRSA requires the addition of Contact Precautions.
Option ④ (Use alcohol-based hand sanitizer only after direct patient contact) is incorrect and dangerous. Hand hygiene (with soap and water or alcohol-based sanitizer) must be performed both before and after patient contact, and after touching environmental surfaces. Using it "only after" contact neglects the "before" component, which protects the patient, and minimizes the critical role of hand hygiene in breaking the chain of infection.

Related Concepts: Understanding the hierarchy of precautions is crucial. Standard Precautions are the foundation for all patient care. Transmission-Based Precautions (Contact, Droplet, Airborne) are added based on the specific pathogen's mode of transmission. For MRSA, even though the infection site is the lungs (pneumonia), the mode of transmission is still contact, not airborne droplets from the lungs. Concept Summary • Contact Precautions: Required for MDROs (MRSA, VRE, C. diff), major wound/skin infections, and herpes simplex. Use gown and gloves. • Droplet Precautions: For pathogens spread by large droplets (e.g., influenza, pertussis, meningococcal meningitis). Use surgical mask and eye protection within 3 feet of patient. • Airborne Precautions: For pathogens spread via airborne nuclei (e.g., tuberculosis, measles, varicella). Requires N95 respirator and negative pressure room. • Standard Precautions: Apply to all patients. Include hand hygiene, use of PPE based on anticipated exposure, and safe injection practices.
Side-by-Side Comparison!

Precaution Type	Key Pathogens	Required PPE (in addition to Hand Hygiene)	Room Requirement
Contact	MRSA, VRE, C. diff, RSV	Gown & Gloves	Private or cohort
Droplet	Influenza, Pertussis, Meningitis	Surgical Mask & Eye Protection*	Private or cohort (mask on patient during transport)
Airborne	TB, Measles, Varicella	N95 Respirator (or PAPR)	Negative pressure, private room

*Gown and gloves also used if contact with respiratory secretions is anticipated.
Anatomy, Physiology & Pharmacology Points • Staphylococcus aureus: A Gram-positive bacterium commonly found on skin and in nasal passages. "Methicillin-resistant" means it is resistant to all beta-lactam antibiotics (penicillins, cephalosporins). • Pneumonia: Infection causing inflammation of the lung alveoli. MRSA pneumonia is a severe, often hospital-acquired infection. • Transmission Physiology: MRSA spreads when bacteria from a colonized or infected patient are transferred via the hands of healthcare workers or contaminated equipment to another patient, often entering through breaks in the skin or mucous membranes.
Memory Tips • C for Contact: Think of "C" for "Contact" and "C" for "Colonization" (MRSA often colonizes the skin/nose). Also, "C" for "Clothing" (gown) and "Cover hands" (gloves). • MRSA Mnemonic: "My Room Requires Special Attention" → Contact Precautions with gown/gloves. • Hand Hygiene Rule: "Before, During, and After" patient care activities. The 5 Moments for Hand Hygiene (WHO) are key.
High-Frequency NCLEX Topics Transmission-Based Precautions are a must-know NCLEX topic. You will be tested on: 1. Matching the pathogen to the correct precaution (e.g., TB=Airborne, Influenza=Droplet, MRSA=Contact). 2. Identifying the correct PPE for a given scenario. 3. Prioritizing interventions to prevent infection spread (e.g., hand hygiene is always #1). 4. Patient education regarding isolation precautions.
Watch Out for Question Variations! • Instead of asking for the precaution, the question might ask: "The nurse is preparing to change a wound dressing for a patient with MRSA. Which personal protective equipment (PPE) is required?" (Answer: Gown and gloves). • The scenario could involve Clostridioides difficile (C. diff), which requires Contact Precautions and the use of soap and water for hand hygiene instead of alcohol-based sanitizer, as C. diff spores are not killed by alcohol. • Questions may combine precautions, e.g., "For a patient with suspected tuberculosis and copious diarrhea, which precautions are needed?" (Answer: Airborne + Contact).

Nursing Clinical Practice Guide Clinical Scenario: You are assigned to Mr. Johnson, a 68-year-old post-operative patient in the ICU who has developed ventilator-associated pneumonia. Sputum culture confirms MRSA. He is on a ventilator, has a central line, and a Foley catheter.

Nursing Intervention Strategy: 1. Assessment: Immediately upon receiving the culture result, confirm the order for Contact Precautions. Assess the room – is it private? Is a Contact Precautions sign clearly posted on the door? Perform a thorough assessment of the patient's skin (for any breakdown), all tube/drain sites, and the oral cavity. 2. Planning & Implementation: • Room & Signage: Ensure the patient is in a private room. Place clear Contact Precautions signage. • PPE Station: Set up a PPE donning station outside the room with gowns, gloves, and alcohol-based hand sanitizer (and soap/water). • Donning PPE: Before entering, perform hand hygiene. Put on gown (tie at neck and waist) and then gloves (extending over gown cuffs). • During Care: Provide all necessary care. Be mindful not to touch your face or adjust PPE. Limit the movement of equipment in and out of the room. Dedicate non-critical equipment (e.g., stethoscope, blood pressure cuff) to this patient's room. • Doffing (Removing) PPE: This is a critical step to prevent self-contamination! Remove gloves first (grasp outside of glove with opposite gloved hand; peel off). Then remove gown (unfasten ties, pull away from body, rolling it inside out). Perform hand hygiene immediately after removing PPE. • Environmental Cleaning: Collaborate with environmental services to ensure daily and terminal cleaning with an EPA-approved disinfectant effective against MRSA. 3. Patient Education & Psychosocial Care: Explain to the patient and family why isolation is necessary to protect others. Reassure them that care will not be compromised. Address feelings of loneliness or stigma by spending extra time communicating and providing diversional activities.

Patient Safety and Precautions: • Hand Hygiene is Non-Negotiable: Perform before donning PPE, after doffing PPE, and before touching your face or leaving the room. • Transport: Limit patient transport. If essential, ensure the patient wears a clean gown and the receiving department is notified of the precautions. • Visitors: Educate visitors on proper donning and doffing of gown/gloves and hand hygiene.
Nursing Procedure & Medication Flow Procedure: Donning and Doffing PPE for Contact Precautions 1. Hand Hygiene (before donning). 2. Gown: Put arms into sleeves. Tie at neck, then at waist. 3. Gloves: Select correct size. Extend gloves to cover gown cuffs. 4. Provide patient care. 5. Gloves Off: Using a gloved hand, pinch the outside of the other glove near the wrist. Peel it off, holding it in the gloved hand. Slide fingers of bare hand under the remaining glove at the wrist, peel it off over the first glove. Discard. 6. Gown Off: Unfasten ties. Pull gown away from neck and shoulders, turning it inside out. Fold/roll into a bundle and discard. 7. Hand Hygiene (immediately after doffing).
Medication Administration for MRSA Infection: The patient will likely be on IV antibiotics like Vancomycin or Linezolid. • Vancomycin: Monitor for "Red Man Syndrome" (flushing, rash, hypotension) during infusion – slow the rate if this occurs. Monitor trough levels (drawn 30 minutes before next dose) to ensure therapeutic level and avoid nephrotoxicity/ototoxicity. • Administer antibiotics on time to maintain therapeutic blood levels.
A Word from Your Senior Nurse "In the real world of nursing, infection prevention is a team sport and you are the quarterback on the front lines. Seeing 'Contact Precautions' on a door isn't a barrier to care—it's a clear instruction on how to provide safe care for that patient and every other patient on the unit. Mastering the donning and doffing sequence until it's muscle memory protects you, your family, and your colleagues. On the NCLEX, they're testing your knowledge of these protocols because in practice, a lapse can lead to an outbreak. Always think: 'What is the mode of transmission?' Your answer will guide your actions. You've got this!"