Correct Answer: C

Rationale: When caring for a client diagnosed with delirium, the most important condition for the nurse to investigate is prescription drug intoxication. Delirium in older adults is commonly caused by medication side effects or interactions. Investigating prescription drug intoxication is crucial as it can be a reversible cause of delirium. While cancer, impaired hearing, and heart failure are important considerations in overall care, prescription drug intoxication takes precedence in cases of delirium.

Correct Answer: C

Rationale: The correct answer is C: Irritability and agitation that worsen throughout the day. These symptoms are concerning in a client diagnosed with delirium as they may indicate an exacerbation of the condition or an underlying cause that requires immediate attention. Option A describes symptoms that resolve with rest, which may not be as urgent. Option B provides a normal blood pressure reading, which is not typically associated with immediate attention in delirium cases. Option D describes mild confusion during specific hours, which may not be as critical as worsening symptoms throughout the day.

Correct Answer: A

Rationale: Administering oxygen and calling for emergency assistance are the immediate priorities when managing a suspected pulmonary embolism. Oxygen helps support the patient's respiratory function, while emergency assistance is crucial for further evaluation and treatment. Positioning the patient in a prone position or giving fluids can worsen the condition by impeding blood flow. Administering anticoagulants may be part of the treatment plan but is not the initial response. Thrombolytics and chest physiotherapy are not first-line treatments for suspected pulmonary embolism and can even be harmful without prior evaluation.

Correct Answer: D

Rationale: During a 12-lead ECG, the client needs to remain still to obtain accurate readings. Therefore, instructing the client to remain still is essential. Choices A, B, and C are incorrect because fasting is not necessary for an ECG, providing a warm blanket is not a standard procedure, and applying cold compresses may interfere with the ECG results.

Correct Answer: D

Rationale: When dealing with a client with anorexia nervosa who insists on working out constantly, it is crucial to address the situation sensitively. Speaking to the client privately to uncover the source of the obsession is the most appropriate action. This approach allows the healthcare professional to understand the underlying reasons for the behavior and work towards a solution together. Choices A and B could potentially exacerbate the client's condition by either enabling the behavior or imposing restrictions without addressing the root cause. While choice C is important, simply discussing the risks may not address the client's compulsion to exercise excessively.