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What are Chvostek and Trousseau signs in hypocalcemia?

Chvostek and Trousseau signs can be elicited in patients with hypocalcemia. Chvostek sign is the twitching of the upper lip with tapping on the cheek 2 cm anterior to the earlobe, below the zygomatic process overlying the facial nerve. 24 Trousseau sign (a more reliable sign present in 94%...

What are the signs and symptoms of hypocalcemia?

The rapidly of the development of hypocalcemia will determine whether or not symptoms will be present. Signs and symptoms of hypocalcemia consisted of tetany (Chvostek's and Trousseau's signs), seizures, diminshed t … There is much individual variability in the clinical manifestations of hypocalcemia.

What is the Chvostek sign and what causes it?

What is the Chvostek sign? The Chvostek sign is a clinical finding associated with hypocalcemia, or low levels of calcium in the blood. This clinical sign refers to a twitch of the facial muscles that occurs when gently tapping an individual's cheek, in front of the ear.

What does hyphypocalcemia cause spontaneous twitching?

Hypocalcemia, or an atypically low level of calcium in an individual’s blood, decreases the threshold needed for the neuron to transmit a signal to the muscle. Therefore, low calcium levels result in hyperexcitability of the nerves, which can result in spontaneous twitches, as seen with a positive Chvostek sign.


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