What are the two levels of PPE commonly used in clinical settings, and when is each used?

• A. PPE not required for non-isolated patients
• B. Standard precautions for all patient contact; transmission-based precautions when infection suspected or confirmed
• C. Standard precautions only apply to bloodborne pathogens
• D. Only gloves during patient contact

Answer: (B)

Two levels of PPE in clinical settings revolve around standard precautions and transmission-based precautions. Standard precautions are the baseline you use with every patient to protect you from exposure to blood, body fluids, non‑intact skin, and mucous membranes. Think of it as the default protection: you perform hand hygiene consistently, wear gloves for contact with blood or body fluids, and add a gown, mask, or eye protection as the situation calls for possible splashes or exposure, plus safe injection practices. Transmission-based precautions are layered on when an infection is suspected or confirmed, and they’re chosen based on how the pathogen spreads. If the organism spreads by contact, you use gloves and a gown; if it spreads by droplets, you add a surgical mask and eye protection when you’re near the patient; if it spreads via the air, you use a fit-tested respirator such as an N95 and place the patient in a negative-pressure room. This framework best explains PPE use because it ensures consistent protection for all patient care while providing additional, tailored protection for pathogens with specific transmission routes. Other options are incomplete because they omit standard precautions for routine care or misstate when PPE is indicated.