LVN Infection Control 1 — Questions and Answers
Question 1: What is the chain of infection?
- Infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, susceptible host (Correct answer)
- Only hand washing
- Only isolation
- Only antibiotics
Correct answer: Infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, susceptible host
Breaking any link in this chain prevents infection transmission.
Question 2: What are standard precautions?
- Infection prevention practices applied to all patient care regardless of diagnosis (Correct answer)
- Precautions only for contagious patients
- Emergency procedures only
- Fire safety protocols
Correct answer: Infection prevention practices applied to all patient care regardless of diagnosis
Standard precautions assume all patients may be infectious and include hand hygiene, PPE, and safe injection practices.
Question 3: When should hand hygiene be performed?
- Before and after patient contact, before procedures, after body fluid exposure, and after touching surfaces (Correct answer)
- Only before lunch
- Once per shift
- Only when hands are visibly dirty
Correct answer: Before and after patient contact, before procedures, after body fluid exposure, and after touching surfaces
Hand hygiene at the five key moments is the most effective way to prevent healthcare-associated infections.
Question 4: What is contact isolation?
- Precautions for patients with infections spread by direct or indirect contact, requiring gown and gloves (Correct answer)
- Isolating the patient from all visitors
- Only wearing masks
- Normal care without special equipment
Correct answer: Precautions for patients with infections spread by direct or indirect contact, requiring gown and gloves
Contact precautions include gown and gloves for all patient contact, plus dedicated equipment.
Question 5: What is a healthcare-associated infection (HAI)?
- An infection acquired during the course of receiving healthcare treatment (Correct answer)
- A pre-existing condition
- An infection from home
- A community-acquired illness
Correct answer: An infection acquired during the course of receiving healthcare treatment
HAIs occur during healthcare delivery and were not present at admission, representing a significant patient safety concern.
Question 6: What is proper PPE donning and doffing sequence?
- Don: gown, mask, goggles, gloves. Doff: gloves, goggles, gown, mask — with hand hygiene between steps (Correct answer)
- Any order is acceptable
- Gloves first always
- Remove everything at once
Correct answer: Don: gown, mask, goggles, gloves. Doff: gloves, goggles, gown, mask — with hand hygiene between steps
Proper sequence prevents self-contamination during removal.
LVN Infection Control 1
What is the chain of infection?