A nurse is caring for a client who has a new diagnosis of systemic lupus erythematosus (SLE) and asks where this disease originates within the body. The nurse should tell the client that SLE originates in which of the following locations in the body?
Connective tissue.
Peripheral vascular system.
Lymphatic system.
Skeletal tissue.
The Correct Answer is A
Choice A rationale
Systemic lupus erythematosus (SLE) is an autoimmune disease that primarily affects connective tissue. The immune system mistakenly attacks healthy tissue, leading to inflammation and damage.
Choice B rationale
SLE does not originate in the peripheral vascular system, although it can cause complications in blood vessels.
Choice C rationale
While the lymphatic system is involved in immune responses, SLE primarily targets connective tissue.
Choice D rationale
SLE does not originate in skeletal tissue, though it can cause joint pain and arthritis.
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Correct Answer is A
Explanation
Choice A rationale
A CD4-T-cell count of 180 cells/mm³ indicates severe immunosuppression in a client with HIV, making them highly susceptible to opportunistic infections. This is a critical value that requires immediate attention to prevent life-threatening complications.
Choice B rationale
A positive Western blot test confirms the presence of HIV antibodies but does not indicate the current immune status or the urgency of the client’s condition.
Choice C rationale
Platelets at 150,000/mm³ are within the normal range and do not indicate an immediate threat to the client’s health.
Choice D rationale
A WBC count of 5,000/mm³ is within the normal range and does not indicate an immediate threat to the client’s health.
Correct Answer is B
Explanation
Choice A rationale
Timolol is a beta-blocker used to reduce intraocular pressure in patients with open-angle glaucoma. It is not intended for short-term use or gradual tapering off. The medication must be used consistently to maintain its therapeutic effect.
Choice B rationale
Timolol should be applied on a regular schedule for the rest of the client’s life to effectively manage intraocular pressure and prevent further damage to the optic nerve.
Choice C rationale
Timolol does not cure glaucoma or normalize intraocular pressure permanently. Continuous use is necessary to control the condition.
Choice D rationale
Timolol is not used as a pain reliever. It is specifically prescribed to manage intraocular pressure in glaucoma patients.