A nurse is assessing a client who is receiving one unit of packed RBCs to treat intraoperative blood loss. The client reports chills and back pain, and the client's blood pressure is 80/64 mm Hg. Which of the following actions should the nurse take first?

Choice A reason: While it is important to address any questions the patient may have, it is not the highest priority before an IVP procedure.

Choice B reason: Asking the patient to void before the procedure is a standard practice, but it is not the highest priority. The bladder should be empty to allow for clear imaging, but this can be managed at the time of the procedure.

Choice C reason: Checking for an allergy to iodine or shellfish is the highest priority because the contrast medium used in an IVP can cause severe allergic reactions in patients with these allergies. This assessment must be done before administering the contrast to prevent potentially life-threatening complications.

Choice D reason: Assessing the client's ability to remain still is important for the quality of the images, but it is not as critical as ensuring the safety of the patient regarding potential allergic reactions.

Choice A reason: Genetics play a significant role in the development of multiple sclerosis (MS). While MS is not directly inherited, certain genetic markers can increase susceptibility. Studies have shown that individuals with a first-degree relative with MS have a higher risk compared to the general population.

Choice B reason: Environmental factors, such as low vitamin D levels, smoking, and possibly viral infections, are believed to contribute to the risk of developing MS. Geographic location, particularly living further from the equator, has also been associated with a higher incidence of MS, which may be related to sun exposure and vitamin D synthesis.

Choice C reason: While upper respiratory infections can trigger exacerbations in individuals with existing MS, they are not identified as a direct contributing factor to the development of the disease itself.

Choice D reason: MS is considered an autoimmune disorder where the immune system mistakenly attacks the central nervous system. This immune-mediated process targets the myelin sheath, leading to inflammation and characteristic lesions.

Choice E reason: Urinary tract infections are a common complication in individuals with MS due to bladder dysfunction, but they are not a contributing factor to the development of MS.