Correct Answer: A

Rationale: To maintain patency of the NG tube, it is essential to irrigate the tube with normal saline every shift. This action helps prevent clogging and ensures that the tube remains clear for effective decompression. Checking tube placement by auscultation (Choice B) is important for verifying correct placement but does not directly impact patency. Securing the tube to the client's gown (Choice C) is crucial for safety and comfort but is not directly related to maintaining patency. Flushing the tube with sterile water before and after medication administration (Choice D) is not the recommended method for maintaining patency of an NG tube, as normal saline is the appropriate solution for this purpose.

Correct Answer: A

Rationale: The best action for the nurse is to respect the patient's preference and autonomy. By deferring the bath until evening, the nurse acknowledges and accommodates the patient's routine, promoting patient-centered care. Choice B could be seen as dismissive of the patient's preference and may not foster a therapeutic relationship. Choice C, while important, doesn't address the patient's current refusal. Choice D is not respectful of the patient's autonomy and could lead to increased resistance. Therefore, option A is the most appropriate and patient-centered approach.

Correct Answer: A

Rationale: A decrease in heart rate can indicate improved fluid balance and successful treatment of fluid volume deficit. When a client is experiencing fluid volume deficit, the heart rate typically increases as a compensatory mechanism to maintain cardiac output. As fluid volume is restored and the deficit is corrected, the heart rate should decrease back towards a normal range. Choices B, C, and D are less likely to be directly related to the successful treatment of fluid volume deficit. An increase in blood pressure may occur as a compensatory response to fluid volume deficit; a decrease in respiratory rate is not a typical indicator of fluid volume deficit correction; and an increase in urine output can be a sign of improved kidney function but may not directly reflect fluid volume status.

Correct Answer: A

Rationale: The correct answer is A: Educating clients about the recommended immunization schedule for adults. This activity falls under primary prevention, which aims to prevent the onset of illness or injury. Immunizations are a proactive measure to protect individuals from developing certain diseases. Choices B, C, and D involve managing chronic illnesses, providing counseling for mental health issues, and offering support for individuals who have already experienced cancer, respectively. These activities are more aligned with secondary or tertiary prevention, focusing on managing existing conditions or preventing complications in those already affected.

Correct Answer: B

Rationale: Measuring the pH of the gastric aspirate is the most reliable method to confirm proper placement of an NG tube. Gastric fluid has an acidic pH, typically ranging from 1 to 5. Assessing the client for a gag reflex (choice A) is important for airway protection but does not confirm tube placement. Placing the NG tube in water to observe for bubbling (choice C) is incorrect and not a reliable method for verifying placement. Auscultating 2.5 cm above the umbilicus while injecting sterile water (choice D) is an outdated method and is not recommended for verifying NG tube placement.