A nurse is caring for a patient with a confirmed MRSA wound infection. Which nursing intervention demonstrates the most appropriate evidence-based practice for preventing transmission while promoting wound healing?
1Apply topical antibiotics to the wound and change dressings using clean technique
2Isolate the patient in a private room and limit visitor access to immediate family only
3Use standard precautions only since MRSA is not airborne transmitted
4Implement contact precautions with proper hand hygiene and use sterile technique for wound care✓ 정답
해설
Contact precautions with hand hygiene and sterile wound care are evidence-based for MRSA to prevent transmission and promote healing. Other options are insufficient (clean technique, isolation only, or standard precautions alone).
Core Nursing ExplanationKey Concept Analysis: This question tests the application of Transmission-Based Precautions for a specific multidrug-resistant organism (MDRO) — Methicillin-resistant Staphylococcus aureus (MRSA). The core is integrating infection control principles with wound management to prevent transmission while providing optimal care. MRSA is primarily spread via direct contact (touching the patient or contaminated surfaces/equipment) or indirect contact (via healthcare workers' hands or contaminated items).
Answer Rationale: Key Point! The correct answer combines two critical, evidence-based practices: Contact Precautions to prevent transmission and Sterile Technique for wound care to prevent secondary infection and promote healing. Contact Precautions require gloves and a gown upon room entry, dedicated patient equipment, and a private room (or cohorting). Hand hygiene (using alcohol-based hand rub or soap and water) is the single most important measure. Using sterile technique (sterile gloves, sterile supplies) for wound care protects the wound from new pathogens, which is especially crucial in an immunocompromised or infected patient to prevent superinfection and support healing.
Distractor Analysis:
Option 1: Watch out for confusion! While topical antibiotics might be part of the treatment plan, using clean technique (non-sterile gloves) for a confirmed MRSA wound is insufficient. Clean technique is for intact skin or chronic wounds with low infection risk in a non-sterile environment. For an open, infected wound, sterile technique is the standard to prevent introducing new bacteria.
Option 2: Isolation and visitor limitation are components of Contact Precautions, but this option is incomplete. It omits the essential practices of glove/gown use, hand hygiene, and the specific wound care technique. Nursing interventions must be comprehensive.
Option 3: This is a dangerous misconception. Standard Precautions (e.g., hand hygiene, gloves for anticipated contact with blood/body fluids) are the minimum for all patients. However, for patients with known or suspected MDROs like MRSA, Transmission-Based Precautions (Contact Precautions) must be added to Standard Precautions, not replaced by them.
Related Concepts: This integrates knowledge from Fundamentals of Nursing (infection control, sterile technique) and Medical-Surgical Nursing (management of MDROs). Remember the hierarchy: Standard Precautions for all, plus additional precautions (Contact, Droplet, Airborne) based on the pathogen's transmission route.
Concept Summary
Concept
Key Points
Standard Precautions
Minimum for all patients. Assume all blood, body fluids, non-intact skin, mucous membranes are potentially infectious. Includes hand hygiene, PPE (gloves, gown, mask, eye protection) based on anticipated exposure.
Transmission-Based Precautions
Added to Standard Precautions. Includes Contact, Droplet, Airborne. Based on pathogen's route of transmission.
Contact Precautions
For pathogens spread by direct/indirect contact (e.g., MRSA, VRE, C. diff). Requires private room (or cohort), gloves & gown upon entry, dedicated equipment.
Sterile Technique (Asepsis)
Eliminates all microorganisms. Used for invasive procedures (surgery, central line insertion, wound care on open wounds). Uses sterile gloves and field.
Clean Technique
Reduces number of microorganisms. Used for non-invasive care (dressing chronic ulcers, administering IM injections). Uses non-sterile gloves.
Side-by-Side Comparison!
Precaution Type
Pathogen Examples
Key PPE & Actions
Room Requirement
Contact
MRSA, VRE, RSV, C. diff*, major skin/wound infections
Gloves & Gown for contact with patient/environment. Meticulous hand hygiene.
Private room or cohort
Droplet
Influenza, Pertussis, Meningitis (N. meningitidis), COVID-19*
Surgical mask within 3-6 feet of patient. Patient should wear mask during transport.
*Note: Some pathogens (C. diff, COVID-19) may require additional or specific precautions per latest CDC guidelines.
Anatomy, Physiology & Pharmacology Points
Microbiology: Staphylococcus aureus is a gram-positive bacterium commonly found on skin/nose. MRSA is resistant to beta-lactam antibiotics (methicillin, oxacillin, penicillin). Resistance is due to the mecA gene producing an altered penicillin-binding protein (PBP2a).
Wound Healing Physiology: Infection (like MRSA) prolongs the inflammatory phase, delays collagen synthesis, and increases risk of complications (abscess, cellulitis). Sterile technique minimizes microbial burden at the wound site, allowing progression to proliferation and remodeling phases.
Pharmacology: MRSA treatment may require antibiotics like Vancomycin (IV), Linezolid, Daptomycin, or Clindamycin (if susceptible). Topical Mupirocin is used for nasal decolonization, not typically for wound treatment.
Precaution Hierarchy: Think "Standard + Something extra" (Standard plus Transmission-Based).
Sterile vs. Clean: "Sterile for Stuff that's open or goes inside" (open wounds, surgical sites, body cavities). "Clean for Closed or Chronic" (intact skin, chronic ulcer dressings, IM injections).
High-Frequency NCLEX Topics
NCLEX heavily tests infection control. You must know:
1. The differences between Standard, Contact, Droplet, and Airborne Precautions (PPE, room type).
2. When to use sterile vs. clean technique.
3. Specific precautions for common MDROs (MRSA, VRE, C. diff).
4. The priority action is always hand hygiene.
Watch Out for Question Variations!
Priority Action: "What is the nurse's first action?" The answer is often "Perform hand hygiene" or "Don appropriate PPE" before patient contact.
Patient Education: Question may shift to teaching a patient/family about home care for a MRSA infection, focusing on hand hygiene, not sharing personal items, and completing antibiotics.
Discontinuation of Precautions: "When can Contact Precautions be stopped?" Usually requires negative cultures or completion of antibiotic therapy per facility policy, not just clinical improvement.
Nursing Clinical Practice GuideClinical Scenario: You are assigned to Mr. Johnson, a 68-year-old diabetic patient with a postoperative abdominal wound that has developed a MRSA infection. The wound is draining purulent, yellow-green exudate. He is in a private room.
Nursing Intervention Strategy:
Assessment: Assess the wound (size, depth, drainage color/amount/odor, surrounding skin). Monitor vital signs for fever (sign of systemic infection). Review culture results confirming MRSA. Assess patient's understanding of isolation precautions.
Planning: Plan to perform wound care using sterile technique while strictly adhering to contact precautions to prevent cross-contamination.
Implementation:
Gather all sterile supplies (sterile gloves, gauze, irrigation solution, dressing) before entering the room.
Perform hand hygiene at the station.
Don gown and gloves upon entering the patient's room.
Provide patient education: Explain why you are wearing gown/gloves to reduce fear or stigma.
Perform wound care using sterile technique: Open sterile packages without contamination, use sterile gloves to handle wound, irrigate with sterile solution, apply sterile dressing.
Dispose of all contaminated dressings in a biohazard bag inside the room.
Remove gloves and gown carefully, discarding them in the room's trash. Perform hand hygiene immediately after leaving the room.
Document wound characteristics and care provided.
Evaluation: Evaluate wound for signs of healing (decreased drainage, granulation tissue). Monitor for no new MRSA infections in other patients on the unit (surveillance).
Patient Safety and Precautions:
Contraindications: Do not use clean technique for an infected open wound. Do not leave the room wearing contaminated PPE.
Medication Cautions: If administering IV Vancomycin, monitor for "Red Man Syndrome" (flushing, rash, hypotension) during infusion; administer slowly over at least 60 minutes. Monitor renal function and trough levels.
Key Monitoring: Monitor for signs of sepsis (fever, tachycardia, tachypnea, altered mental status). Watch for development of abscess or worsening cellulitis.
Nursing Procedure & Medication FlowWound Care with Contact Precautions - Step-by-Step:
1. Prepare: Assemble sterile tray, dressing supplies, and a clean disposable bag at the clean work area outside the room.
2. Hand Hygiene & Don PPE: Perform hand hygiene. Put on gown (tie at neck and waist) and gloves (over gown cuffs) immediately inside the patient's room door.
3. Patient Interaction: Explain procedure. Provide privacy.
4. Sterile Field: Create a sterile field on a clean surface near the patient. Pour sterile solution.
5. Wound Care: Remove old dressing with gloved hands, discard in biohazard bag. Remove soiled gloves, perform hand hygiene (alcohol rub), don sterile gloves. Cleanse/irrigate wound from clean to dirty area. Apply sterile dressing.
6. Post-Procedure: Remove sterile gloves. Remove gown and gloves together by grasping gown from the inside, rolling it into a bundle, and discarding. Perform hand hygiene.
7. Document: Document findings and procedure.
Vancomycin IV Administration:
Dilution: Reconstitute per pharmacy instructions. Further dilute in at least 100-250 mL of compatible fluid (e.g., D5W, NS).
Infusion Rate: Infuse over at least 60 minutes (or per order, often 60-120 mins) to prevent Red Man Syndrome. Use an infusion pump.
Monitoring: Monitor vital signs during infusion. Assess for flushing, rash, itching, hypotension. Trough levels are drawn just before the 4th dose, with a target typically 10-20 mcg/mL (varies by infection).
A Word from Your Senior Nurse
"In the real world, managing a patient with MRSA is as much about psychology as it is about microbiology. Patients in isolation can feel lonely and stigmatized. Your nursing care must balance rigorous infection control with compassionate communication. Always explain why you're wearing 'the space suit' – it's to protect them and others. When studying, don't just memorize 'MRSA = Contact Precautions.' Understand the 'why' behind each step of donning and doffing PPE. One slip in technique can spread the organism. Your knowledge and meticulous practice make you the frontline defender against hospital-acquired infections. On the NCLEX, they're testing if you can keep patients safe. In practice, you're doing it every day."
Contact Precautions — A type of Transmission-Based Precautions used for pathogens spread by direct or indirect contact (e.g., MRSA, VRE). Requires gloves and gown upon room entry, dedicated equipment, and a private room or cohorting.
Sterile Technique — A method used during invasive procedures or wound care to eliminate all microorganisms. Involves the use of sterile gloves, sterile supplies, and maintaining a sterile field to prevent infection.
Standard Precautions — The minimum infection prevention practices that apply to all patient care, regardless of infection status. Include hand hygiene, use of PPE based on risk, safe injection practices, and safe handling of contaminated equipment.
Methicillin-resistant Staphylococcus aureus — A strain of Staphylococcus aureus bacteria resistant to beta-lactam antibiotics like methicillin, oxacillin, and penicillin. It is a common cause of healthcare-associated and community-acquired infections, spread primarily via contact.
Hand Hygiene — The most critical measure to prevent the transmission of pathogens. Includes washing hands with soap and water or using an alcohol-based hand rub. Must be performed before and after patient contact, after removing gloves, and after contact with the patient's environment.