Correct Answer: A

Rationale: The correct answer is to wash hands thoroughly before and after client contact when caring for a client with a salmonella infection. This approach is crucial in preventing the transmission of the infection. While wearing gloves when in contact with body secretions (Choice B), double gloving when in contact with feces or vomitus (Choice C), and wearing gloves when disposing of contaminated linens (Choice D) are important infection control measures, the primary intervention to limit the spread of salmonella is proper hand hygiene.

Correct Answer: B

Rationale: Checking the client's gag reflex is crucial in this situation as coughing while consuming liquids can indicate a risk of aspiration. Assessing the gag reflex can help determine if the client is safe to swallow without inhaling fluids into the lungs, which could lead to further respiratory complications. Adding a thickening agent may not address the underlying issue of aspiration risk. Feeding the client only solid foods is not appropriate without assessing the swallowing safety first. Increasing the rate of intravenous fluids does not directly address the client's difficulty with liquid intake.

Correct Answer: D

Rationale: The correct answer is D: 12 months. Whole milk should be introduced at 12 months to ensure the infant's digestive system can handle the increased fat content. Introducing whole milk before 12 months can lead to digestive issues and potential allergies. Choices A, B, and C are incorrect because transitioning to whole milk before 12 months is not recommended for infants due to their digestive system still developing and not being able to handle the higher fat content of whole milk.

Correct Answer: A

Rationale: The correct answer is to wash hands thoroughly before and after client contact when caring for a client with a salmonella infection. This approach is crucial in preventing the transmission of the infection. While wearing gloves when in contact with body secretions (Choice B), double gloving when in contact with feces or vomitus (Choice C), and wearing gloves when disposing of contaminated linens (Choice D) are important infection control measures, the primary intervention to limit the spread of salmonella is proper hand hygiene.

Correct Answer: D

Rationale: The correct answer is D, a preschooler with intermittent alertness. This client may not have the cognitive ability to effectively use a PCA pump due to their age and alertness level. They may not understand how to self-administer the analgesia. Choices A, B, and C are more appropriate candidates for PCA as they are likely to have better comprehension and ability to operate the PCA pump compared to a preschooler with intermittent alertness.