Chvostek Sign: A Diagnostic Tool for Hypocalcemia
Significance
The Chvostek sign is a valuable diagnostic tool for detecting hypocalcemia, a condition of low calcium levels in the blood.
Positive Chvostek Sign
A positive Chvostek sign manifests as ipsilateral twitching of facial muscles upon tapping the facial nerve in front of the ear. It is associated with hypocalcemia, as this condition enhances nerve and muscle irritability.
Prevalence and Interpretation
Studies have revealed that a positive Chvostek sign occurs in approximately 25% of healthy individuals and 29% of those with hypocalcemia. A negative sign indicates the absence of facial muscle movement.
Clinical Implications
The presence of a positive Chvostek sign suggests the need for further evaluation and management of potential hypocalcemia.
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