NCLEX Infection Control: Isolation Precautions Made Simple
Infection control is a high-priority topic on the NCLEX because it directly affects patient safety. You will see questions about which type of isolation to use, what PPE is required, and how to prevent the spread of specific pathogens. The good news: there are only a few categories to master, and clear mnemonics make them easy to remember.
Standard precautions apply to EVERY patient
Standard precautions are the foundation of infection control. They apply to all patients regardless of diagnosis and include hand hygiene, gloves for contact with blood or body fluids, and proper sharps disposal. Think of standard precautions as the baseline — additional precautions are layered on top.
Airborne Precautions
Airborne pathogens travel on tiny particles that remain suspended in the air. The patient must be in a negative-pressure room, and anyone entering must wear an N95 respirator (or PAPR). Remember the mnemonic "My Chicken Hez TB" — Measles, Chickenpox (Varicella), Herpes Zoster (disseminated), and Tuberculosis require airborne precautions.
Droplet Precautions
Droplet transmission occurs through large respiratory particles that travel short distances (about 3 feet). A surgical mask is required when entering the room. No special room ventilation is needed. Use the mnemonic "SPIDERMAN" — Sepsis, Pertussis, Influenza, Diphtheria, Epiglottitis, Rubella, Meningitis, Adenovirus, Mumps (and pneumonia from Neisseria).
Contact Precautions
Contact precautions are used when the pathogen spreads through direct or indirect physical contact. Wear gloves and a gown upon entering the room. Common conditions: MRSA, VRE, C. difficile, RSV, scabies, and wound infections with multi-drug resistant organisms. Dedicate equipment to the patient's room whenever possible.
Know the PPE order: on and off
Donning order: hand hygiene → gown → mask/respirator → goggles/face shield → gloves. Doffing order: gloves → goggles/face shield → gown → mask/respirator → hand hygiene. The sequence for removal is designed to minimize self-contamination — gloves come off first because they are the most contaminated.
Special Considerations
C. difficile requires contact precautions with soap and water hand hygiene — alcohol-based sanitizers do not kill C. diff spores. Tuberculosis patients need airborne precautions and must have three consecutive negative sputum cultures before discontinuing isolation. Varicella requires both airborne and contact precautions because the virus spreads through air and through direct contact with vesicle fluid.
Surgical Asepsis vs. Medical Asepsis
Medical asepsis (clean technique) reduces the number of microorganisms. Surgical asepsis (sterile technique) eliminates all microorganisms. The NCLEX tests whether you know which technique is appropriate. Sterile technique is required for catheter insertion, wound irrigation, central line dressing changes, and any procedure that breaks the skin or enters a sterile body cavity.
Hand hygiene is the single most effective measure to prevent the spread of infection. When in doubt on the NCLEX, hand hygiene is almost always part of the correct answer.
Nursing Principle