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thyroid function 3
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The thyroid gland directly secretes about 20 percent of?
T3
T3 is responsible for what?
most of the thyroid action in the body
80% of T3 comes from the conversion of?
T4.
T3 is approximately _________ more potent than T4.
4 times
Measuring T3 may help diagnose?
hyperthyroidism
Testing for T3 is rarely used to determine?
hypothyroidism
Measuring TSH is the most effective way to initially test for?
thyroid function
TSH is regulated by?
T4
TSH regulations happens only after _____ is converted to ______ in the _____________ cells.
T4 ; T3 ; pituitary cells
The measurement of ______ and ______ provide the most accurate assessment of thyroid function.
T4 and TSH
What are two common thyroid antibodies that damage the thyroid gland?
antithyroid peroxidase (anti-TPO)
antithyroglobulin (anti-TG)
Measuring thyroid antibodies helps to diagnose the most common cause of ?
hypothyroidism.
Common Disorders of the Thyroid
Hypothyroidism - Hashimoto’s
Hyperthyroidism - Graves Disease
Hypothyroidism occurs when the ?
thyroid fails to produce adequate amounts of thyroid hormone
Hypothyroidism is often present for a number of years before it is recognized
and treated.
A typical person with an underactive thyroid will have elevated ______ levels with _______________.
TSH with low free T4
The most common cause of hypothyroidism is ?
thyroiditis
Thyroiditis includes a group of individual disorders that cause?
thyroidal inflammation resulting in different clinical presentations
Hashimoto’s disease is the most common _________________________ disorder.
autoimmune thyroid
Hashimoto's increases with ______ and occurs more frequently in _______ or persons with a ______________ of ________________
age; women; family history of thyroid disease
Hashimoto’s disease typically targets women and is characterized by ?
high thyroid antibody titers
increased TSH
low free T4.
What is the most effective treatment for Hashimoto’s disease?
Synthetic T4 Levothyroxine --- can be prescribed with a wide range of doses
What is used to treat low thyroid activity?
Levothyroxine
What is used to treat or suppress different types of goiters?
Levothyroxine
How should levothyroxine be taken?
on an empty stomach approx 30 minutes before or two hours after meals.
Space levothyroxine how long before/after other meds
Space at least four hours
including
iron, PNV, antacids which can impair absorption.
What occurs when there is an overabundance of thyroid hormone being produced?
Hyperthyroidism
A typical person with an overactive thyroid will have a _________________ and ________________.
decreased TSH
high free T4
Author
jean
ID
160649
Card Set
thyroid function 3
Description
thyroid function 3
Updated
2012-07-01T17:55:14Z
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