Correct Answer: D

Rationale: When an older, immobile patient is in a supine position, it increases cardiac workload, leading to an increased pulse rate. This is because the heart rate in older adults may not tolerate the additional workload. Choices A, B, and C are incorrect because an increased appetite, increased diarrhea, and increased metabolic rate are not directly associated with being immobile in a supine position. Increased appetite is more related to nutritional needs or certain medical conditions, increased diarrhea could be due to various causes, and an increased metabolic rate is not typically a direct consequence of lying supine.

Correct Answer: A

Rationale: Administering oxygen via a nasal cannula is the priority action for a client experiencing chest pain due to coronary artery disease. Oxygen therapy helps improve oxygenation, reduce myocardial workload, and relieve chest pain by increasing oxygen delivery to the heart muscle. While measuring vital signs, obtaining a 12-lead ECG, and encouraging pursed-lip breathing are important interventions, administering oxygen takes precedence in this situation to address the potential hypoxemia associated with chest pain in a client with a history of coronary artery disease.

Correct Answer: C

Rationale: The correct answer is C. Taking water pills (diuretics) only when feeling short of breath is incorrect. Diuretics should be taken regularly as prescribed to manage fluid retention. Option A is correct as daily weight monitoring helps track for fluid retention. Option B is correct as worsening leg swelling should prompt contacting the healthcare provider. Option D is correct as limiting salt intake is essential in managing heart failure. Therefore, option C is the statement that indicates a need for further teaching.

Correct Answer: A

Rationale: Using a transfer belt if the client is unsteady is essential to provide added safety and support during ambulation. This device helps the nurse assist the client in maintaining balance and prevents falls. Walking beside the client without support (choice B) may not offer enough assistance for a frail, older adult who is unsteady. Encouraging the client to use a walker (choice C) could be helpful in some cases, but if the client is unsteady during ambulation, additional support like a transfer belt is more appropriate. Holding the client's arm for support (choice D) may not provide enough stability and safety compared to using a transfer belt.

Correct Answer: D

Rationale: When an older, immobile patient is in a supine position, it increases cardiac workload, leading to an increased pulse rate. This is because the heart rate in older adults may not tolerate the additional workload. Choices A, B, and C are incorrect because an increased appetite, increased diarrhea, and increased metabolic rate are not directly associated with being immobile in a supine position. Increased appetite is more related to nutritional needs or certain medical conditions, increased diarrhea could be due to various causes, and an increased metabolic rate is not typically a direct consequence of lying supine.