Nokea
The nurse places a patient in isolation. Isolation techniques have the potential to break the chain of infection by interfering with what component of the chain of infection?
- A. Mode of transmission
- B. Agent
- C. Susceptible host
- D. Portal of entry
Correct Answer: A
Rationale: Isolation prevents pathogen spread by blocking the mode of transmission. It does not directly affect the agent, host, or portal of entry.
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A student nurse completing a preceptorship is reviewing the use of standard precautions. Which of the following practices is most consistent with standard precautions?
- A. Wearing a mask and gown when starting an IV line
- B. Washing hands immediately after removing gloves
- C. Recapping all needles promptly after use to prevent needlestick injuries
- D. Double-gloving when working with a patient who has a blood-borne illness
Correct Answer: B
Rationale: Handwashing after glove removal is a core standard precaution to prevent contamination. Masks, gowns, needle recapping, and double-gloving are not standard practices.
The infectious control nurse is presenting a program on West Nile virus for a local community group. To reduce the incidence of this disease, the nurse should recommend what action?
- A. Covering open wounds at all times
- B. Vigilant handwashing in home and work settings
- C. Consistent use of mosquito repellants
- D. Annual vaccination
Correct Answer: C
Rationale: West Nile virus is transmitted by mosquitoes, so repellants are the most effective prevention. No vaccine exists, and handwashing or wound covering are less specific.
A 2-year-old is brought to the clinic by her mother who tells the nurse her daughter has diarrhea and the child is complaining of pain in her stomach. The mother says that the little girl had not eaten anything unusual, consuming homemade chicken strips and carrot sticks the evening prior. Which bacterial infection would the nurse suspect this little girl of contracting?
- A. Escherichia coli
- B. Salmonella
- C. Shigella
- D. Giardia lamblia
Correct Answer: B
Rationale: Salmonella is commonly associated with poultry, causing diarrhea and abdominal pain. E. coli is linked to undercooked beef, Shigella to fecal-oral transmission, and Giardia to contaminated water.
The nurse is caring for a patient with secondary syphilis. What intervention should the nurse institute when caring for this patient?
- A. Ensure that the patient is housed in a private room.
- B. Administer hydrocortisone ointment to the lesions as ordered.
- C. Administer combination therapy with antiretrovirals as ordered.
- D. Wear gloves if contact with lesions is possible.
Correct Answer: D
Rationale: Secondary syphilis lesions are highly infectious, requiring gloves for contact. Private rooms, hydrocortisone, and antiretrovirals are not indicated.
The nurse who provides care at a wilderness camp is teaching staff members about measures that reduce campers and workers risks of developing Giardia infections. The nurse should emphasize which of the following practices?
- A. Making sure not to drink water that has not been purified
- B. Avoiding the consumption of wild berries
- C. Removing ticks safely and promptly
- D. Using mosquito repellant consistently
Correct Answer: A
Rationale: Giardia is transmitted through contaminated water, so avoiding unpurified water is key. Berries, ticks, and mosquitoes are not associated with Giardia transmission.