[Hypercalcemia as an emergency]

Area of Science:

• Endocrinology
• Oncology
• Nephrology

Background:

• Hypercalcemic syndrome is a critical condition with complex pathophysiology.
• Serum calcium levels are influenced by ionic calcium and albumin concentrations.
• Malignancy is a common cause, mediated by parathyroid hormone-related peptide (PTHrP) and cytokines.

Purpose of the Study:

• To describe the hypercalcemic syndrome and its relationship with serum calcium, ionic calcium, and albumin.
• To underscore the pathogenetic significance of bone destruction and PTHrP in humoral hypercalcemia of malignancy.
• To outline a therapeutic strategy for hypercalcemic emergencies.

Main Methods:

• Review of the pathophysiology of hypercalcemic syndrome.
• Description of the role of cytokines and PTHrP in bone metabolism.
• Outline of a multi-faceted therapeutic approach for emergency management.

Main Results:

• Established the link between serum calcium, ionic calcium, and albumin.
• Highlighted cytokine-induced bone destruction and PTHrP as key pathogenic factors.
• Proposed a combined therapeutic strategy for rapid and sustained calcium lowering.

Conclusions:

• Hypercalcemic syndrome requires a comprehensive understanding of its pathogenesis.
• A multi-pronged therapeutic approach is crucial for managing hypercalcemic emergencies.
• Combined use of hydration, furosemide, calcitonin, and pamidronate offers effective calcium control.