Trousseau's sign


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Related to Trousseau's sign: Homans sign, Pulsus paradoxus, Chvostek sign

Trousseau's sign

 [troo-sōz´]
1. spontaneous peripheral venous thrombosis, suggestive of visceral carcinoma, especially carcinoma of the lung or gastrointestinal tract.
2. a sign for tetany in which carpal spasm can be elicited by compressing the upper arm and causing ischemia to the nerves distally.
Trousseau's sign. From Polaski and Tatro, 2000.
See illustration.

Trousseau's sign

A sign of latent TETANY. A SPHYGMOMANOMETER cuff is applied to the upper arm and inflated. Within 4 minutes the forearm muscles go into spasm. (Armand Trousseau, 1801–67, French physician).
References in periodicals archive ?
[1] The pathognomonic feature of acute hypocalcaemia is tetany (typified by a Trousseau's sign) and is usually preceded by paraesthesia (peri-oral and acral), increased neuromuscular irritability (Chvostek's sign) and muscle cramps.
Physical examination of someone with hypocalcemia may show tetany, but it is also possible to provoke tetany of the facial muscles by tapping on the facial nerve (a phenomenon known as Chvostek's sign) or by using the cuff of a sphygmomanometer to temporarily obstruct the blood flow to the arm (a phenomenon known as Trousseau's sign in latent tetany).
The physical examination of the patient, who had lost more than 10% of her body weight (6 kg) in one month, revealed a positive Chvostek's sign and a negative Trousseau's sign. The results of the laboratory examination were as follows: serum calcium 6.8 mg/dL (8.2-10.5 mg/dL); phosphorus 4 mg/dL (2.5-4.8 mg/dL); albumin 3.6 g/dL (3.5-5.2 g/dL); parathormone (PTH) 144.7 pg/mL (15-65 pg/mL); 25-hydroxy vitamin D 25(OH)D 9 ng/mL (<10 ng/ml indicates severe deficiency); potassium 3.5 mEq/L (3.5-5.5 mEq/L); hemoglobin 11.8 g/dL; hematocrit 37.5%; ferritin 20.92 ng/mL (5-148 ng/mL); and vitamin B12 193 pg/mL (193-982 pg/mL).