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Related Experiment Video

Updated: Feb 24, 2026

Cytosolic Calcium Measurements in Renal Epithelial Cells by Flow Cytometry

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Published on: October 28, 2014

[Hypercalcemic crisis and hypocalcemic tetany].

¹Abteilung Innere Medizin I und Klinische Chemie, Sektion Osteologie, Medizinische Universitätsklinik Heidelberg, INF 410, 69120, Heidelberg, Deutschland. christian.kasperk@med.uni-heidelberg.de.

|August 25, 2017

Summary

This summary is machine-generated.

Hypercalcemic crisis (HC) and hypocalcemic tetany (HT) involve critical calcium level disturbances. Prompt diagnosis and treatment, including hydration, medications, and potentially surgery, are vital for managing these endocrine emergencies.

Keywords:

Hypercalcemia Hyperparathyroidism Hypocalcemia Hypoparathyroidism Neoplasms

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Area of Science:

Endocrinology
Internal Medicine
Emergency Medicine

Background:

Hypercalcemic crisis (HC) is characterized by serum calcium >3.5 mmol/l with severe symptoms, often caused by primary hyperparathyroidism or malignancy.
Hypocalcemic tetany (HT) results from severely low calcium levels (<2.0 mmol/l), frequently due to parathyroid hormone deficiency, often seen in chronic hypocalcemia patients.
Both conditions necessitate urgent medical intervention to prevent severe complications and mortality.

Purpose of the Study:

To outline diagnostic pathways for identifying the causes of hypercalcemic crisis and hypocalcemic tetany.
To detail therapeutic strategies for managing acute hypercalcemia and chronic hypocalcemia.
To emphasize the importance of timely intervention in these calcium-related emergencies.

Main Methods:

Analysis of serum calcium, phosphorous, intact parathyroid hormone, and renal function parameters.
Utilizing radiological, scintigraphic, and further serum tests to pinpoint the etiology of hypercalcemia.
Treatment protocols involving volume repletion, forced diuresis, antiresorptive agents, hemodialysis, and intravenous calcium administration.

Main Results:

Diagnostic workup successfully identifies common causes like primary hyperparathyroidism and malignancy-associated hypercalcemia.
Treatment strategies effectively manage dehydration, improve kidney function, lower calcium levels, and reduce bone resorption in HC.
Rapid intravenous calcium replacement and optimized oral supplementation stabilize calcium levels in HT patients.

Conclusions:

Accurate diagnosis through biochemical and imaging studies is crucial for guiding appropriate surgical or oncological interventions in HC.
Comprehensive management of HC involves intensive care unit support, focusing on fluid balance and calcium reduction.
Effective management of HT requires prompt calcium repletion and long-term stabilization with vitamin D and oral calcium, with consideration of PTH therapy in refractory cases.