Endo CE 4 Flashcards

1
Q

PPG >200, already on 40 units of basal - next step

A

ADA recommends adding about 4 units of rapid acting insulin to the biggest meal of the day

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2
Q

serum thyroid markers
3

A

TSH
T4
T3

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3
Q

TSH is produced where

A

by anterior pituitary gland

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4
Q

what is the most sensitive measure of thyroid disease

A

TSH

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5
Q

TSH is a ___

A

messenger

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6
Q

T4 =

A

thyroxine

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7
Q

T4 can be of what two things

A

bound or free

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8
Q

Bound T4

A

is attached to proteins and becomes too large to enter cells and be effective

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9
Q

Free T4

A

is not attached to proteins and can enter cells to affect metabolism

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10
Q

Total T4 =

A

Free T4 + Bound T4w

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11
Q

Which T4 do you measures and why

A

free T4 as bound T4 cannot enter cells so it won’t have any impact

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12
Q

T3 =

A

triiodothyronine

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13
Q

T3 can be what to things

A

bound or free

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14
Q

most T3 circulates as what

A

bound T3 - serves as a reserve, and has no impact on metabolism

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15
Q

which T3 do you measure

A

total T3 measurements are more reliable than free T3

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16
Q

which is more active, T3 or T4

A

T3 is 5 x more active than T4

17
Q

TSH is normal - plan

A

no further testing

18
Q

TSH is elevated - plan

A

add free T4 - we’re thinking about hypothyroid

19
Q

TSH is decreased - plan

A

add free T4 and T3 - we’re thinking about hyperthyroidism

20
Q

primary hypothyroidism - TSH, T4, T3

A

tsh - elevated
t4 - low
t3 - usually normal

21
Q

subclinical hypothyroidism - TSH, T4, T3

A

TSH - elevated
T4 - normal
T3 - normal

22
Q

primary hyperthyroidism- TSH, T4, T3

A

TSH - low
T4 - usually elevated
T3 - normal or elevated

23
Q

for primary hypothyroidism - what is usually going on

A

97% of the time, T4 is not being produced enough

24
Q

primary hypothyroidism is caused by

A

reduction in the amount of circulating free thyroid hormone

25
Q

most common cause of hypothyroidism

A

Hashimoto’s thyroiditis (autoimmune)

26
Q

primary hypothyroidism means pathology is where

A

in the thyroid gland

27
Q

secondary hypothyroidism mean pathology is where

A

outside the thyroid gland

28
Q

subclinical hypothyroidism - TSH 10 or more

A

treat to prevent progression to primary hypothyroidism

29
Q

subclinical hypothyroidism - TSH 4.5 to <10

A

no benefit from treatment; monitor for 6-12 months unless patient comes more symptomatic

30
Q

primary hypothyroid - replacement factoids
3

A
  1. l-thyroxine (synthetic T4) PO daily, in AM, on empty stomach
  2. based on ideal body weight
  3. absorption in empty stomach is best