Clinical view: disorders of thyroid hormone secretion Flashcards
what are the disorders of thyroid hormone secretion
hyperthyroidism
hypothyroidism
Goiter
Myxedema
what does hyperthyroidism result from
excessive production of TH
what are the effects of hyperthyroidism
increased metabolic rate
weight loss
hyperactivity
heat intolerance
what is hyperthyroidism caused by
T4 ingestion
excessive stimulation by pituitary
loss of feedback control of thyroid (graves disease)
what is graves disease
interrelated with hyperthyroidism; inherited disease of hyperthyroidism;
it’s the loss of feedback control of thyroid
how is hyperthyroidism treated
removing the thyroid — then giving hormone supplements
what does hypothyroidism result from
decreased production of TH
what are the effects of hypothyroidism
low metabolic rate
lethargy
cold intolerance
weight gain
what is hypothyroidism caused by
decreased iodine intake
loss of pituitary stimulation of thyroid
postsurgical
immune system destruction of thyroid
how is hypothyroidism treated
thyroid hormone replacement
what is increased metabolic rate characterized by when having hyperthyroidism
restless
exophthalmos (protruding eyes)
what is exophthalmos
protruding eyes
what is goiter disorder
enlargement of thyroid
what is goiter disorder typically due to
insufficient dietary iodine
what does lack of dietary iodine prevent in the goiter disorder
prevents thyroid hormone from producing thyroid hormone
why is goiter disorder no longer a common disorder in the U.S even though it was once common in the U.S
because iodine was added to table salt
what is Myxedema
a rare; extreme complication of hypothyroidism with several organ abnormalities
