A nurse is preparing to transfer a client from a chair to the client’s bed. The client can bear partial weight and has upper body strength. Which of the following devices should the nurse use to transfer the client?

Choice A rationale

Cyanotic mucous membranes and oxygen saturation of 84% indicate severe hypoxemia. Normal oxygen saturation is 95–100%. The cyanosis suggests inadequate tissue oxygenation, requiring immediate intervention to prevent respiratory failure.

Choice B rationale

Diffuse wheezing and tremors may signify severe airway obstruction or beta-agonist overuse. While concerning, these findings are not as immediately life-threatening as hypoxemia and cyanosis.

Choice C rationale

Elevated blood pressure (168/90 mm Hg) and heart rate (98/min) may indicate stress or pain but do not reflect acute life-threatening changes compared to severe hypoxemia.

Choice D rationale

Clear rhinorrhea and warm, dry skin may suggest mild upper respiratory infection. These findings do not indicate imminent danger or severe respiratory compromise compared to hypoxemia and cyanosis.

Choice A rationale

Active immunity involves the production of antibodies by B lymphocytes in response to antigen exposure, creating a specific and adaptive immune response. This process provides long-lasting immunity.

Choice B rationale

Passive immunity provides temporary immunity through the transfer of pre-formed antibodies, such as via breast milk or immunoglobulin therapy. It does not induce memory B cell activation, so lifelong immunity is not achieved.

Choice C rationale

Active immunity results in long-term immunity by stimulating the immune system to develop memory cells. It does not have a short duration as it enables sustained protection against pathogens.

Choice D rationale

Passive immunity does not involve active antigen recognition by the immune system. However, the immune system is not rendered incapable of recognizing antigens, as this statement incorrectly implies a functional deficiency.