Infection Control Precautions for the NCLEX

Standard precautions are used for every patient, every time, regardless of diagnosis or presumed infection status, because you cannot always know who is colonized or infected. They assume that blood, all body fluids except sweat, non-intact skin, and mucous membranes may be infectious. This is the base layer on top of which transmission-based precautions are added — never a substitute for them.

In practice, standard precautions mean hand hygiene before and after every patient contact, gloves whenever contact with body fluids is possible, and gowns, masks, or eye protection whenever a task could splash or spray. Safe injection practice and respiratory hygiene (cough etiquette) also fall under this umbrella. When a stem describes routine care with no named pathogen, standard precautions are the expected answer.

Contact precautions apply to organisms spread by direct or indirect touch — the patient, their skin, or contaminated surfaces and equipment. The PPE is a gown and gloves for any room entry that involves patient or environment contact, and dedicated or disposable equipment when possible. Common triggers include Clostridioides difficile (C. difficile), methicillin-resistant Staphylococcus aureus (MRSA), other multidrug-resistant organisms, and open draining wounds.

C. difficile carries one critical twist the exam tests repeatedly: hand hygiene must be soap and water, not alcohol-based hand rub, because the alcohol gel does not kill C. difficile spores — friction and rinsing physically remove them. Choosing hand gel for a C. difficile patient is a classic wrong answer, so read for the organism before you pick a hand-hygiene method.

Droplet precautions apply to organisms carried in large respiratory droplets that travel only a short distance — traditionally cited as roughly three to six feet — and fall quickly rather than lingering in the air. Because the droplets do not stay suspended, a standard surgical mask worn near the patient is enough; a special room or respirator is not required, though a private room is preferred. The patient wears a surgical mask if they must be transported.

High-yield droplet examples include influenza, pertussis (whooping cough), Neisseria meningitidis (meningococcal disease), mumps, and rubella. A frequent exam trap is confusing meningococcal meningitis (droplet) with tuberculosis (airborne) — both involve serious respiratory-related illness, but only one hangs in the air, so only one needs an N95 and a special room.

Airborne precautions apply to organisms carried in tiny droplet nuclei that stay suspended in the air and travel on air currents, so a simple surgical mask is not enough. These patients need a fit-tested N95 respirator (or higher) and an airborne infection isolation room — a private room under negative pressure so contaminated air is exhausted outside or through filtration rather than into the hallway. The door stays closed to maintain the pressure differential.

The classic airborne diseases are tuberculosis, measles (rubeola), and varicella (chickenpox); disseminated herpes zoster (shingles) is also managed with airborne plus contact precautions. A useful memory hook is “My Chicken Tastes Very Special” — Measles, Chickenpox (varicella), TB. If the patient must leave the room, they wear a surgical mask, but staff still use the N95 whenever caring for the patient.

The order matters because it protects you at the moment you are most likely to contaminate yourself — removal. To DON (put on), the sequence is gown, then mask or respirator, then goggles or face shield, then gloves, with the gloves pulled over the gown cuffs so no skin is exposed. Think of it as building outward, ending with the gloves that will touch the patient.

To DOFF (take off), remove the dirtiest items first while your hands are still protected. The common sequence is gloves, then goggles or face shield, then gown, then mask or respirator, performing hand hygiene as you go and again at the very end. The mask comes off last because you should not reach around your contaminated face and hair until everything else is gone — and you remove the mask only after leaving an airborne room.

No matter how the item is dressed up, hand hygiene is the single most effective action to prevent health-care–associated infection, and it is frequently the correct answer to “what is the priority” or “what does the nurse do first and last.” Perform it before touching a patient, before a clean or aseptic task, after body-fluid exposure risk, after touching a patient, and after touching the patient’s surroundings.

Alcohol-based hand rub is appropriate and often preferred for routine decontamination when hands are not visibly soiled, because it is fast and effective against most pathogens. The two situations that require soap and water are visibly soiled hands and care of a patient with C. difficile (or other spore-forming organisms), where mechanical washing removes spores that alcohol cannot kill. Matching the right hand-hygiene method to the situation is itself a tested judgment.