A nurse in an allergy clinic is caring for a client who has a history of seasonal allergy symptoms. The client had a radioallergosorbent test (RAST) completed on a previous visit. The nurse should recognize that an elevation in which of the following immunoglobulins indicates a positive result?

Choice A: Apply heat for 10 minutes every hour
Applying heat can help to relax the muscles and relieve tension, which can reduce pain. Heat therapy increases blood flow, which can aid in healing and reduce stiffness.

Choice B: Sleep in a side lying position with flexed knees
Sleeping in a side-lying position with flexed knees can help to maintain the natural curve of the spine and reduce strain on the back muscles. It's also recommended to use a pillow between the knees for additional support.

Choice C: Avoid prolonged sitting
Prolonged sitting can put pressure on the discs in your lower back and cause or exacerbate pain. It's recommended to take regular breaks to stand up and move around.

Choice D: Use padded shoe insoles
While padded shoe insoles can provide comfort and support for some people, there's no strong evidence to suggest that they can help to prevent or relieve back pain.

Choice E: Sleep on a soft mattress
Contrary to popular belief, a soft mattress may not be the best choice for people with back pain. A mattress that's too soft can cause your back to sink into the mattress, leading to poor sleep posture and discomfort. It's generally recommended to choose a mattress that provides good support and maintains the spine's natural alignment.

Choice A reason: Keeping the client NPO (nothing by mouth) is not directly related to preventing a thyroid crisis. While it may be necessary in some situations, such as preoperative care, it does not address the hyperthyroid state.

Choice B reason: Observing the client for signs of hypocalcemia is important, especially after thyroid surgery, as hypocalcemia can occur due to accidental removal or damage to the parathyroid glands. However, it is not a preventive measure for a thyroid crisis.

Choice C reason: Providing a quiet, low stimulus environment can help reduce stress and agitation, which are potential triggers for a thyroid crisis. Stress can exacerbate hyperthyroid symptoms and precipitate a crisis.

Choice D reason: Aspirin is contraindicated in clients with hyperthyroidism as it can increase thyroid hormone levels by displacing them from their binding proteins. This can potentially worsen the condition and lead to a crisis.