Hypothyroid Flashcards
1
Q
thyroid axis
A
hypo>TRH>pit>TSH>thyroid>T3+4>target
2
Q
where does T34 feedback to
A
hypo and pit (-ve)
3
Q
4 presentations of thyroid issues
A
- hypo
- hyper
- mass effect
- associated probs.
4
Q
see table of patterns
A
do it
5
Q
pattern of 1ry hypo
A
TSH up, T3-4 down
6
Q
what to measure for 1ry hypo
A
just TSH
7
Q
what to look for in fatigue to help show hypothyroid
A
FHx, common, not depressed, sleeping well, can have normal Phx
8
Q
labs for hypo
A
- TSH, B-HCG
- CBC, creatinine, AST - renal failure
- fasting glucose - DM
- FSH - menpause
9
Q
what to see on labs for hypothyroid
A
high TSH - can comfortably say
10
Q
3 tests not to order
A
- T4
- neck US
- anti-thyroid ABs
11
Q
DDx for hypothyroid
A
- congntial
- hashimotos
- iatrogenic - amiodarone, iodine, radiation, ectomy
- subacute thyroiditis
- hypothalamic disease (2ry)
- peripheral resitance (3ry)
12
Q
2 most common casues
A
- hashimotos
2. subacute thyroiditis
13
Q
hashimotos presentation
A
- other autoimmune
- small goitre
- pos. anti-thyroid ABs
14
Q
presentation of subacute thyoiditis
A
- inflammation of thyroid
- throitoxicosis
- may be painful or pain less
15
Q
treatment of subaucte thyroiditis
A
- supportive during toxic phase (B-blocker, pain meds)
2. L-thyroxin during hypothyroid
