Question

quiz: performing hand hygiene (canada nurse)

1. how are most health care - associated infections (hais) transmitted to patients?

a on the hands of health - care workers
b through invasive procedures
c from hospital food
d on the hands of health - care workers and through invasive procedures

Explanation:

Healthcare - associated infections (HAIs) are most commonly transmitted via the hands of healthcare workers, as they frequently interact with patients and can transfer pathogens. Option D combines hands of workers and invasive procedures, but the primary mode is hands of healthcare workers (with invasive procedures being another route, but the question's options: A is on hands (not transmitting), B is through invasive (not primary), C is from food (unlikely primary for HAIs), D includes both hands and invasive, but the main transmission is via hands of HCWs and invasive procedures contribute, but the best option here is D? Wait, no—wait, the question is "how are most HAIs transmitted to patients?" The correct understanding: HAIs are often transmitted by healthcare workers' hands (direct contact) and through invasive procedures (which can introduce pathogens). But among the options, D is "On the hands of health - care workers and through invasive procedures". However, the primary mode is via the hands of healthcare workers (transmitting pathogens when they touch patients after touching contaminated surfaces or other patients) and invasive procedures (like catheters, surgeries) can also transmit. But let's analyze the options:

• Option A: "On the hands of health - care workers" – just being on hands isn't transmission; transmission happens when they transfer to patients. So A is incorrect.
• Option B: "Through invasive procedures" – invasive procedures are a route, but not the most common primary route (hands are more common for transmission between patients via HCWs).
• Option C: "From hospital food" – hospital food is not a primary source of HAIs.
• Option D: "On the hands of health - care workers and through invasive procedures" – this covers the two main routes: HCWs' hands (transmitting pathogens during care) and invasive procedures (which can introduce infections). So D is the correct option as it includes both common transmission routes.

Answer:

D. On the hands of health - care workers and through invasive procedures