Question 1

Which of the following best describes the difference between medical asepsis and surgical asepsis?

Accepted Answer

Medical asepsis involves practices to reduce and prevent the spread of pathogens, while surgical asepsis involves practices to keep objects and areas free from all microorganisms.

Question 2

A patient is admitted with a urinary tract infection caused by Escherichia coli (E. coli). Which of the following best explains how E. coli, normally a harmless resident in the intestinal tract, can cause disease in the urinary tract?

Accepted Answer

E. coli acts as an opportunist, causing infection when it migrates to a location outside its normal habitat.

Question 3

Which of the following is NOT a component of the infection cycle?

Accepted Answer

Antigen-antibody reaction

Question 4

A nurse is caring for a patient with a wound that is red, swollen, warm, and painful. Which phase of the inflammatory response is primarily responsible for these signs?

Accepted Answer

Vascular phase, due to vasodilation and increased permeability

Question 5

Which of the following statements about antibiotics and viruses is correct?

Accepted Answer

Antibiotics have no effect on viruses; antiviral medications are required to treat viral infections.

Question 6

A nurse is teaching a patient about the importance of hand hygiene. According to the World Health Organization's 'My 5 Moments for Hand Hygiene,' which of the following is NOT one of the five moments?

Accepted Answer

After eating a meal

Question 7

A patient with HIV is asymptomatic but tests positive for the HIV antibody/antigen. What is the significance of this finding in terms of infection control?

Accepted Answer

The patient is considered a carrier and can transmit the virus even without symptoms.

Question 8

Which of the following best describes the difference between airborne and droplet transmission?

Accepted Answer

Airborne particles are smaller than 5 $$\mum$$, while droplet particles are greater than 5 $$\mum.$$

Question 9

A nurse is preparing to insert an indwelling urinary catheter. Which type of aseptic technique should be used for this procedure?

Accepted Answer

Surgical asepsis

Question 10

Which of the following factors does NOT increase a host's susceptibility to infection?

Accepted Answer

Adequate nutritional status

Question 11

A nurse is caring for a patient with Clostridioides difficile (C. diff) colonization but no clinical signs of infection. What is the correct interpretation of this scenario?

Accepted Answer

The patient harbors the organism without signs of disease; infection is present only if symptoms develop.

Question 12

Which of the following is the most effective way to prevent the spread of health care–associated infections (HAIs)?

Accepted Answer

Performing hand hygiene consistently and correctly

Question 13

A nurse is reviewing the stages of infection. During which stage is a person MOST infectious, often without realizing it?

Accepted Answer

Prodromal stage

Question 14

Which of the following is an example of indirect contact transmission?

Accepted Answer

A patient develops an infection after using a contaminated stethoscope.

Question 15

A nurse is caring for a patient with a localized infection. Which of the following signs would the nurse expect to observe?

Accepted Answer

Redness, swelling, and pain at the affected site

Question 16

Which of the following is a correct statement regarding the use of alcohol-based handrubs in clinical practice?

Accepted Answer

Alcohol-based handrubs are recommended when hands are not visibly soiled and are more effective than antimicrobial soap in most situations.

Question 17

A nurse is planning interventions to reduce a patient's risk for infection. Which of the following is the most appropriate expected outcome?

Accepted Answer

The patient will demonstrate effective hand hygiene and good personal hygiene practices.

Question 18

Which of the following best describes the role of normal flora in the gastrointestinal tract?

Accepted Answer

Normal flora help protect the body by preventing invasion by harmful bacteria.

Question 19

A nurse is caring for a patient with a wound that is producing purulent exudate. What does the presence of purulent exudate indicate?

Accepted Answer

There is a presence of pus, which suggests an active infection.

Question 20

A nurse is educating a group of students about the importance of the immune response. Which of the following best describes humoral immunity?

Accepted Answer

It involves the production of antibodies in response to antigens.

Infectious Diseases: Prevention, Transmission, and Control

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