ATI RN
NCLEX Questions on Oxygenation and Perfusion Questions
Question 1 of 5
What chemical mediator is associated with type IV delayed hypersensitivity reactions?
Correct Answer: C
Rationale: Type IV hypersensitivity (delayed, cell-mediated) involves lymphokines (e.g., cytokines) released by T-cells, not histamine or bradykinin.
Question 2 of 5
A patient with the following neurological assessment would score what on the Glasgow Coma Scale: Opens eyes to speech only, is orientated and obeys motor commands?
Correct Answer: C
Rationale: Eyes to speech = 3, orientated (verbal) = 5, obeys commands (motor) = 6; total GCS = 14.
Question 3 of 5
Which of the following is the correct ratio of chest compressions to breaths as per NRP?
Correct Answer: B
Rationale: The Neonatal Resuscitation Program (NRP) recommends a 3:1 compression-to-ventilation ratio for newborns.
Question 4 of 5
Which of these clients is at the highest risk for developing an upper respiratory infection?
Correct Answer: A
Rationale: Preschool-aged children, like the 3-year-old in this scenario, are at a higher risk for developing upper respiratory infections compared to other age groups. This is because their immune systems are still developing and they have frequent close contact with other children, making it easier for viruses to spread. Additionally, young children may not have developed good hygiene habits yet, such as proper handwashing, which further increases their risk of infection.
Question 5 of 5
What is the action of codeine when used to treat a cough?
Correct Answer: B
Rationale: Codeine acts as a cough suppressant by reducing the cough reflex in the brain.