Chvostek Sign Definition
by Medical Terminology Flashcards



Chvostek Sign - Medical Terminology Letter C

Carpopedal spasm – it is a violent, painful contraction of the muscles in the hands and feet. It is characterized by increased neuromuscular excitation and sustained muscle contraction; commonly associated with hypocalcemia.

Cat’s cry – it is a mewing, kittenlike sound and a primary indicator of cat’s cry syndrome (also known as cridu chat). It occurs during infancy period.

Cheyne-stokes respiration – it is characterized by a waxing and waning period of hyperpnea that alternates with a shorter period of apnea. It can indicate increased ICP or intracranial pressure from a deep-cerebral or brain stem lesion.

Chills – it is an extreme, involuntary muscle contraction with characteristic paroxysms of violent shivering and teeth chattering. It is commonly associated with fever.

Chvostek sign – it is an abnormal spasm of the facial muscles that’s elicited by lightly tapping the patient’s facial nerve near the lower jaw. It is a sign for hypocalcemia.

Clubbing – it a painless, bilateral increase in soft tissue around the terminal phalanges of the fingers or toes. It is a sign (nonspecific) of cardiovascular and pulmonary disorders.

Cogwheel rigidity – it is a cardinal sign for Parkinson’s disease. A muscle rigidity that reacts with superimposed rachetlike movements when the muscle is passively stretched. It usually appears in the arms but sometimes in ankle. To elicit this sign, patient must stabilized the forearm and then moving the wrist through the range of motion.

Crackles – signs for pulmonary and cardiovascular disorders. It is a non-musical clicking or rattling noises heard during auscultation. It occurs during inspiration.

Cerebral cry – it is a high-pitched cry but brief, sharp, piercing vocal sound produced by a neonate or infant. It is a late sign of increased ICP or intracranial pressure.

Cyanosis – it is a bluish black or bluish discoloration of the skin and mucous membranes. It is caused by excessive concentration of unoxygenated hemoglobin in the blood.

1. Central cyanosis – it reflects inadequate oxygenation of systemic arterial blood caused by right-to-left cardiac shunting, pulmonary disease or hematologic disorder.

2. Peripheral cyanosis – it reflects an sluggish peripheral circulation caused by reduced cardiac output, vasoconstriction or vascular occlusion.


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