3.2 PPE, Isolation, and Transmission-Based Thinking

PPE, isolation, and transmission-based thinking

Personal protective equipment (PPE) creates a barrier between the CNA and infectious material: gloves, gowns, surgical masks, eye protection (goggles or face shield), and N95 respirators. PPE only works when it is chosen correctly, donned before exposure, removed without contaminating skin or clothing, and discarded per policy. PPE is not a label that a resident is "dirty" — it is a safety tool, and you wear it without showing disgust toward the resident.

Standard precautions apply to everyone. Transmission-based precautions are layered on top when an organism's route demands extra barriers. Always read the door sign, care plan, and assignment sheet. If the sign conflicts with what you were told, or required PPE is missing, stop and ask the nurse before entering for non-urgent care.

The three categories (know the distances and rooms)

The airborne row is the highest-stakes one. A surgical mask does not protect against TB or measles — only a fit-tested N95 does — and the door must stay closed because the room is negative-pressure. A CNA never improvises a respirator and never props the AIIR door open.

Donning and doffing order

Putting PPE on is donning; the order is gown, mask or respirator, goggles/face shield, gloves — gloves last so they cover the gown cuffs. Taking PPE off is doffing, and this is where most contamination happens because the outside surfaces are contaminated. The CDC removal order is:

1. Gloves first (peel inside-out, never touch the outside with bare skin)
2. Goggles/face shield (handle by the headband or earpieces, not the front)
3. Gown (untie, peel away from the neck and shoulders, roll inside-out)
4. Mask/respirator last (handle by the ties or straps, never the front), then leave the room
5. Perform hand hygiene — between steps if hands become contaminated and always at the end

A common memory cue: the mask comes off last because it protected your airway and you keep it on longest. The respirator is removed after leaving an AIIR.

Dignity inside isolation

A resident on precautions keeps every right: privacy, dignity, nutrition, hydration, toileting help, oral care, repositioning, and call-light access. Do not leave the tray, water, tissues, or personal items out of reach because the room "takes extra time." Plan and gather all supplies before donning so you do not repeatedly cross from clean to contaminated areas. Isolation is medically necessary but emotionally hard, so spend a moment talking and explaining the precautions.

Visitors and scope

Visitors must follow posted precautions. If a family member is about to enter a droplet room without a mask, politely point to the sign, offer the correct PPE or to get the nurse, and report refusal — do not argue, disclose the diagnosis, or hand over your used mask. The CNA reinforces the posted plan but does not invent or lift isolation rules.

Matching PPE to the task, not the diagnosis

PPE is selected by expected exposure, layered on top of any posted precautions. Wear gloves whenever contact with blood, body fluids, mucous membranes, non-intact skin, soiled linen, or contaminated equipment is likely — emptying a urinal, perineal care, oral care, or cleaning a spill. Add a gown when your clothing or forearms may be soiled or splashed, or when the resident is on contact precautions. Add a mask plus eye protection when splashing or spraying of body fluid is possible (suctioning by the nurse, a resident who is vomiting forcefully) or for droplet precautions.

The presence of a diagnosis you find alarming does not change the rule: a resident with a known bloodborne infection needs the same PPE as the task would otherwise require, because standard precautions already assume every resident may be infectious.

Cohorting, signage, and the assignment sheet

When private rooms run short, residents with the same organism may be cohorted (placed together), but a resident with one organism is never roomed with a resident who has a different one. Door signage is the CNA's authoritative instruction; if a sign and a verbal report disagree, follow the more protective instruction and confirm with the nurse. Read the assignment sheet for who is on precautions before you start your rounds so you can group supplies and plan the order of care — generally caring for non-isolation residents earlier and isolation residents in a way that does not carry organisms onward.

Bag-out and disposal

Disposable PPE is discarded inside the room (or in the doorway zone designated by policy) before you fully exit, so you do not track contamination into the hall. Reusable items such as goggles are cleaned and disinfected per policy. Soiled linen and trash from an isolation room are bagged according to facility rules, and you never set a meal tray on the floor or carry it bare-handed back through the hall.

Scenario decision aid:

1. Read the sign and assignment before entry.
2. Identify the task and likely exposure.
3. Gather all clean supplies before donning.
4. Don in order; keep clean items clean inside.
5. Doff slowly in order, hand hygiene at the end.
6. Report missing PPE, unclear instructions, symptoms, exposure, or visitor concerns to the nurse.

On exam questions, reject answers that skip PPE because the task is "quick," and reject answers that delay an urgent life-safety need (choking, fall, severe distress) to fuss with PPE.