Hypocalcaemia, clinical signs and symptoms

Neuromuscular: Tetany - involuntary muscle contraction Paresthesia – strange sensations eg numbness/tingling Twitching esp. face (cranial nerve) Muscle group contraction eg clawed hands Full blown convulsion, respiratory arrest and death CNS: irritability, seizures, personality changes, impaired cognition Cardiovascular: QT prolongation on ECG