A nurse observes reddish-purple spots and areas of purple bruising on a newly admited patient. Which laboratory results support this assessment finding?

Choice A reason: Respiratory Acidosis is characterized by a low pH and a high PCO2, which is not the case here.

Choice B reason: Respiratory Alkalosis would involve a high pH and a low PCO2, which is not consistent with the patient's PCO2 level.

Choice C reason: Metabolic Alkalosis is indicated by a high pH and a high HCO3, which matches the patient's blood gas values.

Choice D reason: Metabolic Acidosis would show a low pH and a low HCO3, which is the opposite of this patient's presentation.

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.