Serum calcium level 13.8 mg/dl-rationale: excessive thirst, constipation, dehydration, confusion, and altered mental state are possible signs of hypercalcemia. hypercalcemia is common in multiple myeloma because of the increased bone destruction. a platelet count of 300,000/mm3 is normal and wouldnt cause the clients symptoms. a sodium level of 133 meq/l is slightly decreased but wouldnt cause confusion and excessive thirst. a hemoglobin of 9.8 g/dl level is slightly low but isnt likely responsible for the clients symptoms.client needs category: physiological integrityclient needs subcategory: reduction of risk potentialcognitive level: analysisreference: smeltzer, s.c., et al. brunner and suddarths textbook of medical surgical-nursing, 11th ed. philadelphia: lippincott williams & wilkins, 2008, p. 1083.