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[Immobilization hypercalcemia as a complication of polyneuropathy]
J Riehl1, V M Brandenburg, C G Dietrich
1Medizinische Klinik II, Universitätsklinikum der RWTH Aachen. jochen.riehl@post.rwth-aachen.de
Der Nervenarzt
|September 21, 2000
Summary
Immobilization can cause bone loss and low calcium. In rare cases, it leads to dangerous hypercalcemia, successfully treated with pamidronate.
Area of Science:
- Endocrinology
- Bone Metabolism
- Clinical Case Study
Background:
- Prolonged immobilization and physical inactivity increase bone resorption and decrease bone formation.
- Skeletal changes are common in tetraplegia, often leading to hypocalcemia and hypercalciuria.
- Hypercalcemia is an infrequent but potentially life-threatening complication in immobilized patients.
Observation:
- A case of symptomatic hypercalcemia (serum calcium: 3.5 mM/l) in a patient with critical illness polyneuropathy following immobilization is presented.
- Other common causes of hypercalcemia were excluded.
- Initial treatments with saline, furosemide, and calcitonin were ineffective.
Findings:
- Pamidronate treatment successfully normalized serum calcium levels.
- This case highlights a rare presentation of hypercalcemia due to immobilization.
Implications:
- Pamidronate is an effective treatment for immobilization-induced hypercalcemia.
- Further research is needed to understand the mechanisms behind hypercalcemia in a subset of immobilized patients.
- This finding may inform clinical management strategies for immobilized patients at risk of severe hypercalcemia.