True about Chvostek’s sign are all of the following except: March 2010, March 2013
Correct Answer: Raised calcium level
Description: Ans. C: Raised calcium levelPTH is essential for life. After parathyroidectomy, there is a steady decline in the plasma Ca2+ level. Signs of neuromuscular hyperexcitability appear, followed by full-blown hypocalcemic tetany.In humans, tetany is most often due to inadveent parathyroidectomy during thyroid surgery. Symptoms usually develop 2-3 days postoperatively but may not appear for several weeks or more. Injections of PTH correct the chemical abnormalities, and the symptoms disappear. Injections of Ca2+ salts give temporary relief.The signs of tetany in humans include Chvostek's sign, a quick contraction of the ipsilateral facial muscles elicited by tapping over the facial nerve at the angle of the jaw; and Trousseau's sign, a spasm of the muscles of the upper extremity that causes flexion of the wrist and thumb with extension of the fingers
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now