Correct Answer: B

Rationale: Engaging in regular physical activity is a crucial lifestyle modification for managing hypertension. Regular exercise helps improve cardiovascular health, lower blood pressure, and contribute to overall well-being. Choices A, C, and D are incorrect. Increasing sodium intake is not recommended for hypertension as it can worsen fluid retention and elevate blood pressure. Increasing caffeine intake is also not advised as it may lead to increased heart rate and blood pressure. Reducing potassium intake is not beneficial as potassium is essential for maintaining healthy blood pressure levels.

Correct Answer: C

Rationale: The correct answer is C. Oxygen saturation levels below 95% indicate hypoxia and require immediate intervention. A heart rate of 88 beats per minute, a blood pressure of 100/60, and a respiratory rate of 16 are within normal ranges and do not require immediate intervention. Oxygen saturation is a critical parameter reflecting the client's oxygenation status.

Correct Answer: D

Rationale: The correct answer is D. In acute pancreatitis, abdominal pain typically worsens after eating due to the stimulation of the pancreas to release enzymes that irritate the inflamed tissues. Pain relief when lying supine is uncommon and usually exacerbates discomfort. While nausea and vomiting are common symptoms, they are not as indicative of changes in pain intensity. Pain radiating to the back is characteristic but does not specifically relate to exacerbation post-eating.

Correct Answer: A

Rationale: Administering oxygen at 2 L/min via nasal cannula is the nurse's first action when a client with COPD presents with a respiratory rate of 32 breaths per minute and an oxygen saturation of 86%. Oxygen therapy helps improve oxygen saturation in patients with COPD and respiratory distress. While notifying the healthcare provider is important, immediate intervention to improve oxygenation takes priority. Positioning the client in high Fowler's position can also assist with breathing but is not the initial action in this scenario. Suctioning the airway is not indicated unless there are secretions obstructing the airway, which is not mentioned in the scenario.

Correct Answer: B

Rationale: The correct answer is to assess the client's endotracheal tube for obstruction. When a client on mechanical ventilation experiences high-pressure alarms, the first action should be to check for any potential obstructions in the airway, which can trigger the alarms. Checking the oxygen saturation (Choice A) is important but not the priority when dealing with high-pressure alarms. Repositioning the client (Choice C) may be necessary later but should not be the initial action. Suctioning the client's airway (Choice D) should only be done after assessing for and addressing any obstructions in the endotracheal tube.