Correct Answer: A

Rationale: The client's statement about adjusting to using crutches while recovering suggests a potential need for occupational therapy referral. Occupational therapists assist individuals in regaining independence in activities of daily living, including mobility aids and adaptations. Choices B, C, and D are more indicative of emotional or financial concerns and may require referrals to other healthcare professionals like counselors or financial advisors, rather than occupational therapists.

Correct Answer: D

Rationale: The correct answer is D: Undiagnosed, untreated diabetes mellitus. Hyperosmolar hyperglycemic nonketotic syndrome (HHNS) is most commonly caused by undiagnosed and untreated diabetes mellitus. Insulin overdose (Choice A) is not a typical cause of HHNS; it is more related to hypoglycemia. Removal of the adrenal gland (Choice B) can lead to adrenal insufficiency but is not a common cause of HHNS. Undiagnosed, untreated hyperpituitarism (Choice C) is not a usual cause of HHNS; it is more related to pituitary hormone imbalances rather than hyperglycemia.

Correct Answer: D

Rationale: The correct action to take when a patient becomes hypotensive with a bounding, rapid pulse rate after administering penicillin intravenously is to stop the intravenous flow immediately. This can help prevent further complications by discontinuing the administration of the medication that might be causing the adverse effects. Decreasing or increasing the rate of medication flow may not address the underlying issue of the patient's adverse reaction. While it's important to involve the healthcare provider in such situations, the immediate priority is to halt the administration of the medication.

Correct Answer: D

Rationale: The correct response is D because the health care surrogate, as designated by the client, has the legal authority to make healthcare decisions on behalf of the client when they are unable to do so. This authority includes decisions about treatment continuation or withdrawal. Option A is incorrect as the family member's wishes do not override the legal authority of the health care surrogate. Option B is not the most appropriate action in this situation as the advance directives are already clear by the designation of a health care surrogate. Option C is not necessary at this stage since the health care surrogate can make the decision without involving the ethics committee.

Correct Answer: D

Rationale: Diabetes insipidus is caused by a disorder of the pituitary gland affecting ADH regulation. This disorder results in the decreased production or release of antidiuretic hormone (ADH), leading to the inability of the kidneys to concentrate urine properly. Choices A, B, and C are incorrect as they do not relate to the underlying cause of diabetes insipidus.