A nurse is caring for a patient with suspected Ebola virus disease in the isolation unit. Which sequence of personal protective equipment (PPE) removal is most critical to prevent self-contamination?
1Remove gloves first, then gown, followed by eye protection, and finally the respirator mask✓ 정답
2Remove respirator mask first, then eye protection, followed by gown, and finally gloves
3Remove gown first, then gloves, followed by respirator mask, and finally eye protection
4Remove eye protection first, then respirator mask, followed by gloves, and finally gown
해설
The correct sequence (gloves first, then gown, eye protection, respirator mask) follows CDC guidelines to remove most contaminated items first, minimizing self-contamination risk. Other options increase exposure by removing less contaminated items earlier.
Core Nursing Explanation
This question tests the critical skill of PPE (Personal Protective Equipment) doffing (removal) sequence for high-consequence pathogens like the Ebola virus. The core principle is to remove the most contaminated items first while keeping your hands clean to prevent touching your face or mucous membranes with contaminated gloves.
Key Concept Analysis
For diseases spread via contact and droplet transmission with high mortality (like Ebola), PPE typically includes gloves, a fluid-resistant gown, eye protection (goggles or face shield), and a respirator (N95 or higher). During patient care, the outer surfaces of the gown and gloves are considered the most contaminated. The respirator and eye protection are considered less contaminated as they are closer to your face and not in direct, extensive contact with the patient or environment.
Answer RationaleKey Point! The correct sequence (Gloves → Gown → Eye Protection → Respirator Mask) is based on the CDC's guidance for Donning and Doffing of PPE. Here’s the physiological and safety rationale:
1. Gloves are removed first because they are the most contaminated. Removing them while the gown is still on allows the gown's cuff to be pulled over the contaminated glove during removal, preventing skin exposure.
2. Gown is removed next. With clean hands (after glove removal), you can untie the gown and peel it away from your body, rolling it into a bundle from the inside (clean side) out.
3. Eye protection is removed next. This is done before the respirator because the respirator's straps may be contaminated. You handle the ear or head pieces only.
4. Respirator Mask is removed last. By this point, your hands are clean, minimizing the risk of contaminating your mouth, nose, or the inside of the mask when handling the straps.
Distractor AnalysisWatch out for confusion! The incorrect sequences violate the "most to least contaminated" principle and create specific contamination risks:
* Option ② (Mask first): This is extremely dangerous. Removing the respirator first forces you to use contaminated gloves to touch the straps near your head and face, potentially inoculating the virus onto your mucous membranes.
* Option ③ (Gown first): Removing the gown first means your gloved hands, which are heavily contaminated, will directly contact your arms, neck, and clothing underneath, spreading contamination.
* Option ④ (Eye protection first): Similar to option ②, this requires using contaminated gloves to handle equipment near your eyes and face, a high-risk action.
Related Concepts
This principle is part of Contact and Droplet Precautions. For Airborne Precautions (e.g., Tuberculosis, Measles), the respirator (N95) is typically removed outside the patient's room after the door is closed, but the "most to least contaminated" order for other items still applies within the room or anteroom.
Concept Summary
* Core Principle: Remove PPE in order from most contaminated to least contaminated.
* Standard High-Risk Sequence: Gloves → Gown → Eye Protection → Respirator Mask.
* Rationale: Protects mucous membranes (eyes, nose, mouth) and non-intact skin from exposure by ensuring hands are clean before touching the face or cleaner equipment.
* Always Perform: Hand hygiene immediately after removing all PPE.
Side-by-Side Comparison!
Respirator (N95 or PAPR), plus others as needed based on contact risk
Respirator removed outside patient room after door closed, following hand hygiene.
Anatomy, Physiology & Pharmacology Points
* Portal of Entry: The rationale for the sequence is to protect the body's portals of entry for infection: mucous membranes of the eyes, nose, and mouth, and non-intact skin.
* Viral Transmission: Ebola virus is transmitted through direct contact with blood or body fluids of an infected person, or contact with contaminated surfaces/objects. It is not airborne in the typical sense (like measles), but respiratory droplets from close contact are a risk, hence the use of a respirator.
Memory Tips
* Mnemonic: "Get Gone, Eyes Rest" (Gloves, Gown, Eye protection, Respirator).
* Think: "Dirty to Clean." Start with what touched the patient most (gloves/gown), end with what protected your breathing (mask).
High-Frequency NCLEX Topics
PPE donning/doffing sequence is a High Yield topic. The NCLEX often tests:
1. The correct sequence for removal.
2. Identifying the error in a described sequence.
3. The rationale behind removing a specific item first or last.
4. Application to specific diseases (e.g., "For a patient with C. diff, which action is priority when removing PPE?" – Answer: Perform hand hygiene with soap and water, not alcohol-based gel, after removal).
Watch Out for Question Variations!
* Instead of asking for the sequence, a question might state: "The nurse removes the N95 respirator immediately after leaving the patient's room. Which action by the nurse was correct?" This tests the Airborne Precautions variation.
* A question could focus on a single step: "When removing PPE for a patient on Contact Precautions, the nurse removes the gown and then feels moisture on the arm. What is the priority action?" (Answer: Immediately wash the skin with soap and water and notify the infection prevention team).
Nursing Clinical Practice GuideClinical Scenario
You are assigned to a patient in a negative-pressure isolation room who was admitted with fever, severe diarrhea, and a recent travel history from an area with known Ebola transmission. You have just completed administering IV fluids and need to exit the room.
Nursing Intervention Strategy
1Assessment & PlanningBefore entering, ensure all necessary supplies are inside the room to minimize exits/entries. Mentally rehearse the doffing sequence. A "PPE buddy" or observer outside the room is ideal for high-risk pathogens to guide you and watch for breaks in technique.
2Implementation* Perform hand hygiene upon exiting the patient's bedside.
* Move to the designated doffing area (often an anteroom).
* Gloves First: Pinch one glove at the wrist (without touching skin) and peel it off, holding it in the gloved hand. Slide fingers of the bare hand under the remaining glove's cuff and peel it off over the first glove, creating a contained bundle.
* Gown: Unfasten ties. Pull the gown away from your neck and shoulders, touching only the inside. Roll the gown into a bundle, contaminated side in.
* Eye Protection: Handle by the ear or head pieces. Place in designated receptacle.
* Respirator: Lean forward. Grasp the bottom strap, then the top strap, and remove without touching the front. Discard.
3Evaluation & Patient SafetyPerform hand hygiene immediately after the last step. Self-monitor for any perceived contamination during the process. Report any potential exposure immediately per facility protocol.
Patient Safety and Precautions
* Key Point! The doffing area is considered contaminated. Do not touch your face, hair, or personal items (like a phone) until hand hygiene is complete.
* For Ebola and other high-consequence pathogens, double gloving and waterproof boot covers may be used. The removal sequence is adapted (e.g., outer gloves, then boot covers, then gown, then inner gloves).
* Hand Hygiene: After PPE removal for pathogens like C. difficile, soap and water is required because alcohol-based hand rubs are not effective against the spores.
Nursing Procedure & Medication Flow
While not a medication procedure, PPE doffing is a critical "safety procedure." Think of it as a sterile procedure in reverse—you are decontaminating yourself. Each step must be deliberate and performed in the correct order to maintain an aseptic barrier.
A Word from Your Senior Nurse
"In the heat of a busy shift, it's tempting to rip off your PPE quickly. Don't. For your safety and the safety of every other patient and healthcare worker on the unit, these few extra seconds of mindful, sequenced removal are non-negotiable. I've seen seasoned nurses break technique when rushed. Practice this sequence until it's muscle memory. On the NCLEX, they're testing if you know how to protect yourself—because a nurse who gets contaminated can't protect anyone else. In real life, this knowledge literally saves lives, starting with your own."
Personal Protective Equipment — Specialized clothing or equipment worn by healthcare workers for protection against infectious materials. Includes gloves, gowns, masks, respirators, goggles, and face shields.
Contact Precautions — Infection control measures used for patients known or suspected to be infected with pathogens spread by direct or indirect contact (e.g., MRSA, VRE, C. diff). Requires gloves and gown.
Doffing — The careful removal of PPE in a manner that prevents self-contamination or contamination of the environment.
Self-Contamination — The act of transferring infectious material from contaminated PPE or surfaces to one's own skin, mucous membranes, or clothing during PPE removal.
Hand Hygiene — A general term that applies to handwashing with soap and water, antiseptic hand rub, or surgical hand antisepsis. It is the single most important measure to prevent the spread of infection and must be performed before donning and after doffing PPE.