Core Nursing Explanation
This question tests the critical knowledge of
PPE doffing (removal) sequence for high-consequence pathogens like the Ebola virus. The core principle is to remove the most contaminated items first while protecting mucous membranes (eyes, nose, mouth) and performing hand hygiene (HH) at key points to prevent self-contamination.
Key Concept Analysis
For diseases transmitted via contact and droplet routes with high mortality, such as
Ebola Virus Disease (EVD), the CDC and WHO recommend a meticulous, stepwise doffing procedure. The goal is to prevent the healthcare worker's skin and mucous membranes from coming into contact with the contaminated outer surfaces of the PPE.
Key Point! The respirator (or mask) and eye protection are removed last because they protect the most vulnerable portals of entry.
Answer Rationale
Option ④ is correct because it follows the evidence-based,
"clean to dirty" or "outside to inside" principle with integrated hand hygiene.
1.
Gloves are removed first because they are considered the most contaminated. Hand hygiene is performed immediately after to clean hands that may have been contaminated during glove removal.
2. The
Gown is removed next (pulling it away from the body inside out), as it is heavily contaminated on the outside. Another round of hand hygiene follows.
3.
Eye protection (goggles or face shield) is removed by handling only the clean headband or straps. Hand hygiene is performed again.
4. The
Respirator (N95) or mask is removed last by touching only the straps, ensuring the mucous membranes of the nose and mouth are protected until all other contaminated PPE is removed and hands are clean. A final hand hygiene is performed.
Distractor Analysis
Watch out for confusion! Option ① is incorrect because it removes eye protection and the respirator before the gown. The outside of the gown could contaminate the face during this process. Option ② is incorrect because removing the gown and gloves together is a high-risk maneuver that can lead to splashing or spreading contamination. Option ③ is the most dangerous sequence; removing the respirator first immediately exposes the nurse's nose and mouth to airborne or surface contaminants before other PPE is removed.
Related Concepts
This procedure is part of
Contact and Droplet Precautions, enhanced for special pathogens. The donning sequence is the reverse: perform hand hygiene, then don the gown, respirator, eye protection, and finally gloves. A trained observer should supervise the doffing process for high-risk pathogens.
Concept Summary
•
Principle: Remove from most contaminated to least contaminated (Gloves → Gown → Eye Protection → Respirator). Protect mucous membranes until the end.
•
Critical Step: Perform
Hand Hygiene with alcohol-based hand rub or soap and water at multiple points during doffing.
•
Purpose: To break the chain of infection and prevent healthcare-associated transmission to staff.
Side-by-Side Comparison!
| Precaution Type | Key PPE Components | Critical Doffing Difference |
|---|
| Contact Precautions (e.g., C. diff, MRSA) | Gown, Gloves | Hand hygiene must be performed with soap and water after removing gloves if C. diff is suspected, as alcohol does not kill spores. |
| Droplet Precautions (e.g., Influenza, COVID-19) | Surgical Mask, Eye Protection, Gown, Gloves | Mask/Respirator and eye protection can be removed before the gown if careful not to touch the front. Hand hygiene remains critical. |
| Airborne Precautions (e.g., Tuberculosis, Measles) | Fit-tested N95 Respirator or PAPR | Respirator is donned before entering and removed after leaving the room. The sequence for other PPE follows contact/droplet principles. |
Anatomy, Physiology & Pharmacology Points
•
Portal of Entry: The rationale for the sequence is based on protecting the body's portals of entry: mucous membranes of the
eyes, nose, and mouth (protected by goggles and respirator) and non-intact skin (protected by gloves and gown).
•
Chain of Infection: Proper doffing breaks the chain at the "
Mode of Transmission" (contact) and "
Portal of Entry" links.
Memory Tips
•
Acronym: "
Get
Rid
Of
Germs,
Eyes &
Mouth
Last!" (Gloves Remove, Gown Off, Eye protection, Mask Last). Remember HH between each step.
•
Visual Cue: Imagine you are peeling an onion from the dirty outside layers (gloves/gown) to the clean core (your face).
High-Frequency NCLEX Topics
PPE donning/doffing is a
High Yield topic. The NCLEX often tests:
1. The
correct sequence for specific precautions.
2. When to use
soap and water vs. alcohol-based hand rub.
3. Identifying the
greatest risk or error in a scenario (e.g., "The nurse removes the mask first. What is the priority action?").
Watch Out for Question Variations!
• Instead of sequence, they may ask: "
Which action by the nurse during PPE removal requires immediate intervention by the supervising nurse?" (Answer: Removing the respirator before the gown and gloves).
• They may change the disease: "For a patient with
Clostridioides difficile, which modification to the doffing procedure is essential?" (Answer: Perform hand hygiene with soap and water, not alcohol-based rub, after glove removal).