Hypocalcemia in Cats: Recognition and Emergency Management

Hypocalcemia in cats causes neuromuscular signs ranging from tremors to seizures and requires prompt recognition and emergency treatment.

Key Facts

Hypocalcemia most commonly results from hypoparathyroidism following thyroid surgery in cats
Other causes include renal failure, acute pancreatitis, and primary hypoparathyroidism
Signs include muscle tremors, tetany, facial rubbing, seizures, and behavioral changes
Ionized calcium is the most clinically relevant measurement - total calcium can be misleading
Emergency treatment with IV calcium gluconate requires careful monitoring during administration
Long-term management uses oral calcium and vitamin D supplementation
Prognosis for post-surgical hypoparathyroidism is good with appropriate long-term management

Welfare Considerations

Hypocalcemia causes severe neuromuscular disturbance - muscle tremors, pain from tetanic contractions, and seizures represent profound suffering. Cats following thyroid surgery are at particular risk and should be monitored closely in the post-operative period. Emergency calcium administration provides rapid relief from these symptoms. Long-term management with oral supplementation enables cats to live comfortably with hypoparathyroidism when appropriately monitored and dose-adjusted.

What You Can Do

Monitor cats closely for 48-72 hours following thyroid surgery for hypocalcemia signs
Seek emergency veterinary care immediately for any cat showing muscle tremors or facial rubbing post-surgery
Measure ionized calcium rather than total calcium for accurate assessment
Administer long-term oral calcium and vitamin D supplementation as directed after acute management
Schedule regular ionized calcium monitoring to adjust supplementation and prevent recurrence