QUESTIONS AND ANSWERS |
COMPREHENSIVE MEDICAL SURGICAL
NURSING STUDY GUIDE 2026 | GRADED
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Updated 2026 Questions and Answers | 100% Verified
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, If a nurse breaks any single link, the spread of infection stops dead
does what?
What are the 6 links in the chain of infection? Infectious agent → Reservoir → Portal of exit → Mode of transmission → Portal of
entry → Susceptible host
Which link is easiest for nurses to break? Mode of transmission
What is an infectious agent? The pathogen causing disease (bacteria, virus, fungus, parasite, prion)
What is a reservoir? Where pathogens live and multiply (human body, standing water, contaminated
equipment, soil).
What is a portal of exit? How pathogens leave the reservoir (blood, stool, droplets, wound drainage)
What is a portal of entry? How pathogens enter a new host (broken skin, respiratory tract, urinary catheter,
GI tract).
Who is considered a susceptible host? A person with compromised defenses
(Elderly, infants, immunocompromised, surgical patients)
What precautions are used for all patients? Standard precautions
What are standard precautions? Hand hygiene (before and after patient contact) and PPE as needed
What PPE is required for standard precautions? gloves/gown/mask only if splashing of body fluids is anticipated.
What PPE is required for contact precautions? PPE: Gloves and Gown before entering the room.
Examples of Contact Precautions? MRSA, VRE, C. diff, scabies, draining wounds
Room Placement for Contact Precautions Private room or cohorting with patients with the same infection.