hyperthyroidism Flashcards

1
Q

most common cause of hyperthyroidism?

A

graves disease

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2
Q

graves disease usually presents in ?

A

women aged 40-60

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3
Q

what causes increased T3/T4?

A

production of antibodies that stimulate T3/4 production and release in the absence of TSH

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4
Q

what are the autoantibodies seen in graves disease?

A

TRAB
Anti thyroid peroxidase
anti thyroglobulin

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5
Q

what kind of goitre do you get?

A

smooth, symmetrical goitre

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6
Q

specific signs of graves?

A

pretibial myxoedema

bilateral exopthalmos and opthalmoplegia

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7
Q

who is nodular disease more commonly seen in ?

A

elderly patients

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8
Q

what does nodular disease result in ?

A

toxic multinodular goitre

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9
Q

what is a toxic multi nodular goitre?

A

multiple nodules that secrete thyroid hormone

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10
Q

whats a toxic adenoma?

A

single nodule that secretes thyroid hormone and suppresses activity of the rest of the gland

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11
Q

inflammatory cause of thyroiditis?

A

sub acute DeQuervains Thyroiditis

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12
Q

sub acute de quervains is a transient inflammation of the thyroid gland. when would this occur?

A

after a viral illness

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13
Q

what happens in DQT?

A

patients tend to cycle from hyper to hypo then back to normal

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14
Q

treatment of DQT?

A

NSAIDS

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15
Q

what is DQT associated with >

A

painful goitre, pyrexia and raised inflammatory markers

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16
Q

GI symptoms?

A

diarrhoea

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17
Q

motor?

A

tremor

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18
Q

CVS?

A

palps

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19
Q

GU

A

oligomennorhea +- infertility

20
Q

derm?

A

moist skin or lumps on shins

21
Q

mood?

A

anxiety, irritability, emotional liability, psychoss

22
Q

general?

A

heat intolerance, sweating, fatigue, weight loss, increased appetite, reduced conc, swelling in the neck

23
Q

ophthalmology?

A

gritty sensation in eye, eye discomfort, double vision, photophobia

24
Q

pre tibial myxoedema - hyper or hypo?

A

hyper - shin on grave

25
ophthalmology signs
lid lag lid retraction chemosis (swelling of the conjunctive) exopthalmos - protrusion of the eye (GRAVES ONLY)
26
diagnosis of hyperthyroidism?
TFTs, +- antibodies +- scintigraphy scan
27
what does pre tibial myxoedema?
purple brown/ indurated plaques on shin
28
High TSH and high T3/4?
secondary hyperthyroidism
29
TSH and T3/4 level in primary hyper?
high T3/4, low TSH q
30
scintigraphy results | High uptake in multiple locations.
multi nodular
31
Single nodule of high uptake.
toxic adenoma
32
Reduced uptake.
de quervains
33
Diffuse, increased uptake.
graves
34
symptom control management of hyperthyroid?
propranolol
35
two anti thyroid medications
carbimazole and propylthiouracil
36
which drug is favoured in pregnancy
PTU
37
what is there a risk of in carbimazole ?
agranulocytosis
38
what is used in radio ablation
radioactive iodine
39
what are the risks of radio ablation?
thyroid storm in active disease | post treatment hypothyroidism
40
contraindications to radio ablation
pregnancy, lactation
41
what is a thyroidectomy?
o Surgical removal of part or all of the thyroid gland.
42
risks of thyroidectomy?
recurrent laryngeal damage and hoarseness, hypothyroidism, hypoparathyroidism
43
how does carbimazole work?
These drugs decrease the output of thyroid hormones from the thyroid gland by reducing the action of the peroxidase enzyme – thus preventing iodine from joining with tyrosine – which is what normally happens before the tyrosine is excreted from the cell and incorporated into a thyroglobulin molecule
44
how long does it take for carbmiazole to work and what can be done in this time to
3-4 weeks
45
what is given in this time to control symptoms ?
beta blockers