Signs of tetany

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Trousseau’s sign   

 Inflate a blood pressure cuff just above the systolic pressure for 3 minutes. When hypocalcemia has caused muscular irritability, the hand will develop flexor spasm.

Chvostek’s sign   

Gently tap over the facial nerve (in front of the tragus of the ear). The sign is positive if there is a contraction of the lip and facial muscles on the same side of the face. 


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