A client with chronic lung disease is prescribed 40% oxygen via face mask. Which finding indicates to the nurse that the client is experiencing oxygen toxicity? Select all that apply.

Choice A Reason:

A decreased thyroxine (T4) level is not expected in a client with Graves’ disease. Graves’ disease is an autoimmune disorder that leads to hyperthyroidism, where the thyroid gland produces excessive amounts of thyroid hormones, including T4. Therefore, the T4 level is typically elevated, not decreased.

Choice B Reason:

Similarly, a decreased triiodothyronine (T3) level is not expected in Graves’ disease. Like T4, T3 levels are usually elevated due to the overactive thyroid gland. T3 is the active form of thyroid hormone and is often increased in hyperthyroid conditions.

Choice C Reason:

Decreased thyroid-stimulating immunoglobulins (TSI) percentage is incorrect. In Graves’ disease, TSI levels are elevated because these antibodies stimulate the thyroid gland to produce more thyroid hormones. TSI mimics the action of TSH, leading to increased production of T3 and T4.

Choice D Reason:

Decreased thyroid-stimulating hormone (TSH) level is the correct answer. In Graves’ disease, the excessive thyroid hormones (T3 and T4) exert negative feedback on the pituitary gland, leading to suppressed TSH production. Therefore, TSH levels are typically low in patients with Graves’ disease.

Choice A: Periodic Nystagmus

Nystagmus, which is characterized by involuntary eye movements, can be a symptom of various neurological conditions, including bacterial meningitis. However, it is not typically an immediate concern compared to other symptoms. Nystagmus indicates potential issues with the brainstem or cerebellum, but it does not directly threaten the patient’s life or indicate a rapid deterioration in condition. Therefore, while it is important to monitor, it is not the most urgent finding.

Choice B: Severe Unrelenting Headaches

Severe headaches are a common symptom of bacterial meningitis due to the inflammation of the meninges. While they are extremely painful and distressing for the patient, they are not as immediately life-threatening as a decreased level of consciousness. Headaches indicate increased intracranial pressure, which is serious, but the priority is to address symptoms that indicate a more rapid decline in neurological function.

Choice C: Photophobia During the Day

Photophobia, or sensitivity to light, is another common symptom of meningitis. It results from the irritation of the meninges and is often accompanied by headaches. While photophobia can be very uncomfortable and indicative of meningitis, it is not an immediate concern compared to a decreased level of consciousness. Photophobia does not directly indicate a life-threatening situation.

Choice D: Decreased Level of Consciousness

A decreased level of consciousness is the most immediate concern for a nurse caring for a patient with bacterial meningitis. This symptom indicates a significant and potentially rapid decline in the patient’s neurological status. It can be a sign of increased intracranial pressure, brain swelling, or other severe complications. Immediate medical intervention is required to prevent further deterioration and potential fatality. Monitoring and addressing changes in consciousness are critical in managing bacterial meningitis effectively.