Posted: August 16th, 2017

Trousseau’s sign is positive when

Trousseau’s sign is positive when
a) carpopedal spasm is induced by occluding the blood flow to the arm for 3 minutes with the use of a blood pressure cuff.
A positive Trousseau’s sign is suggestive of latent tetany.
b) a sharp tapping over the facial nerve just in front of the parotid gland and anterior to the ear causes spasm or twitching of the mouth, nose, and eye.
A positive Chvostek’s sign is demonstrated when a sharp tapping over the facial nerve just in front of the parotid gland and anterior to the ear causes spasm or twitching of the mouth, nose, and eye.
c) after making a clenched fist, the palm remains blanched when pressure is placed over the radial artery.
A positive Allen’s test is demonstrated by the palm remaining blanched with the radial artery occluded. The radial artery should not be used for an arterial puncture.
d) The patient complains of pain in the calf when his foot is dorsiflexed.
A positive Homans’ sign is demonstrated when the patient complains of pain in the calf when his foot is dorsiflexed.