The nurse reviews the client’s serum calcium level and notes that the level is 8.0 mg/dL (2.0 mmol/L). The nurse understands that which condition would cause this serum calcium level? 1. Prolonged bed...

The nurse reviews the client’s serum calcium level and notes that the level is 8.0 mg/dL (2.0 mmol/L). The nurse understands that which condition would cause this serum calcium level?

1. Prolonged bed rest 2. Adrenal insufficiency 3. Hyperparathyroidism 4. Excessive ingestion of vitamin D