Correct Answer: A

Rationale: When a client is expressing anger about a diagnosis, it is essential for the nurse to validate the client's feelings. Choice A is correct because reassuring the client that anger is an expected response to grief acknowledges the client's emotions and encourages expression, fostering a therapeutic relationship. This validation helps the client feel understood and supported during a challenging time. Choice B is incorrect as ignoring the client's anger can lead to feelings of neglect and hinder effective communication, which is crucial for providing holistic care. Choice C is inappropriate because telling the client that anger is not helpful dismisses the client's emotions and can further escalate the situation, potentially damaging the nurse-client relationship. Choice D is not the best option as it does not involve acknowledging the client's feelings or providing support and validation, which are vital in promoting emotional well-being and trust between the client and the nurse.

Correct Answer: A

Rationale: The correct intervention is to assist the client back to bed. A decrease in oxygen saturation while ambulating indicates hypoxemia, and the immediate priority is to stabilize oxygen levels. Returning the client to bed allows for rest and decreased oxygen demand, potentially preventing further desaturation. Encouraging continued ambulation (Choice B) may worsen the hypoxemia by increasing oxygen demand. Obtaining portable oxygen (Choice C) is essential but should not delay addressing the low oxygen saturation. Moving the oximetry probe (Choice D) may not address the underlying cause of decreased oxygen saturation and should not be the first intervention.

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: D

Rationale: Crepitus around the chest tube insertion site may indicate subcutaneous emphysema, a serious condition that requires immediate attention. It can be a sign of an air leak in the lung or surrounding tissues. Constant bubbling in the suction control chamber is expected in a functioning chest tube system as it indicates proper suction. Intermittent bubbling in the water seal chamber is also normal, showing that the system is functioning correctly, allowing air to escape but not re-enter. Drainage of 50 ml per hour is within the expected range for chest tube output and does not require immediate intervention unless there are other concerning signs such as rapid increase or a sudden change in color or consistency.

Correct Answer: B

Rationale: The correct answer is B because the ability to demonstrate the appropriate technique shows that the client has acquired the psychomotor skills needed for insulin preparation. Merely discussing, stating an understanding, or writing the steps does not confirm that the client can physically perform the task correctly. Being able to demonstrate indicates practical application and mastery of the skill. Choice A is incorrect because discussing the technique does not necessarily mean the client can physically perform it. Choice C is incorrect as stating an understanding does not guarantee the client's ability to perform the task. Choice D is incorrect because writing the steps does not assess the client's physical execution of the technique.