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Medicine

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Endocrine

Question
18 out of 18
 

Regarding iodine which is false? (AIIMS May 2013)



A It inhibits synthesis of thyroxine

B Contraindicated in hyperthyroidism

C Prevents peripheral conversion of t4

D Can be used preoperatively in hyperthyroidism

Ans. B

Contraindicated in hyperthyroidism

High dose of iodine inhibits synthesis of thyroxine. This is known as Wolff Chaikoff Effect. If you give low dose of iodine for long time it can induce hyperthyroidism (Job Basedow effect). Hence iodine is contraindicated in hyperthyroidism.

Endocrine Flashcard List

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