zero to final end conditions Flashcards

(44 cards)

1
Q

what does the anterior pituitary gland release

A

TSH, ACTH, FSH, LH, GH and prolactin

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2
Q

what does posterior pituitary secrete

A

oxytocin- uterine contractions and lactation
ADH- maintains water balance

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3
Q

thyroid results in primary hyperthyroidism

A

thyroid gland is not working so producing excess T3 and T4
TSH is suppressed by the high levels of T3 and 4

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4
Q

thyroid results in secondary hyperthyroidism

A

Pituitary gland isn’t working so produces lots of TSH
TSH will be high and so will T3 and T4

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5
Q

thyroid results in primary hypothyroidism

A

Thyroid isn’t behaving so no negative feedback so high TSH but low T3 and T4

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6
Q

thyroid results in secondary hypothyroidism

A

pituitary not behaving no low TSH and low T3 and T4

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7
Q

typical symptoms of graves disease

A

exopthalamos
pretibial myxoedema
goitre

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8
Q

symptoms of hyperthyroidism

A

weight loss and heat intolerance
anxiety
insomnia
brisk reflexes

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9
Q

de quervains thyroiditis

A

thyrotoxicosis
hypothyroidism
return to normal

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10
Q

what antibodies are associated with hashimotos thyroiditis

A

anti-thyroid peroxidase and anti-thyroglobulin

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11
Q

presentation of hypothyroidism

A

weight gain and cold intolerance
coarse hair and hair loss

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12
Q

what type of steroid is cortisol

A

glucocorticoids

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13
Q

what type of steroid is aldosterone

A

mineralcorticoids

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14
Q

cushings syndrome

A

prolonged high levels of glucocorticoids produced from adrenal glands

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15
Q

cushings disease

A

pituitary adenoma secreting ACTH

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16
Q

what disease do you use the dexamethasone test for

A

if cortisol isn’t suppressed then you have cushings
It should usually be suppressed by negative feedback

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17
Q

24 urinary free cortisol

A

used for cushings

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18
Q

how do you investigate aldosteronism

A

aldosterone to renin ratio

19
Q

how do you manage aldosteronism

A

aldosterone antagonists

20
Q

what is the most common cause of secondary hypertension

A

hyperaldosternism

21
Q

signs of adrenal insufficiency

A

bronze hyperpigmentation as ACTH stimulates melanocytes to produce melanin
hypotension

22
Q

what do you get hyponatraemia

A

adrenal insufficiency

23
Q

Other blood investigations from adrenal insufficiency

A

high potassium
low glucose
raised urea
hypercalaemia

24
Q

tests for adrenal insufficiency

A

short synacthen test

25
management of adrenal insufficiency
hydrocortisone fludocortisone
26
addisonain crisis symptoms
reduced consciousness hypotension hypoglycaemia hyponatraemia
27
management of addisonain insufficiency
IV or IM hydrocortisone IV fluids
28
most common cause of acromegaly
pituitary adenoma
29
investigations for acromegaly
IGF-1 GH suppression test MRI of pituitary
30
what hormone does somatostatin compress
GH
31
which cells produce parathyroid hormone
chief cells
32
how does PTH increase calcium
increasing osteoclast activity in bones increasing calcium reabsorption increasing Vit D so more calcium absorbed in the intestines
33
symptoms of hypercalcaemia
kidney stones, painful bones, abdominal groans, psychiatric moans
34
how do you get increased production of ADH
increased secretion by posterior pituitary ectopic ADH by small cell lung cancer
35
what happens with excessive ADH
increased water reabsorption in the collecting ducts diluting the blood and reducing sodium concentration
36
what sort of urine do patients with SIADH have
high urine osmolarity and high urine sodium
37
symptoms of SIADH
headache, fatigue, muscle aches and confusion
38
how does diabetes insipidus occur
a lack of antiduiretic hormone and lack of response to the hormone
39
presentation of diabetes insipidus
polyuria, polydipsia, dehydration, postural hypotension
40
investigations for diabetes insipidus
low urine osmolarity more than 3 litres on 24 hrs urine collection
41
primary polydipsia vs diabetes insipidus
water deprivation test shows high urine osmolarity ruling out diabetes
42
phaeochromocytoma disease
tumour in the chromatin cells that secrete unregulated and excessive amounts of adrenaline
43
Test for catecholamines
plasma free metanephrines 24 hr urine catecholamines
44
Management of phaeochromocytoma
1. alpha blockers 2. beta blockers 3. surgical removal of the tumour