Endocrine disease Flashcards

1
Q

What is endocrine disease

A

Endocrine glands secrete hormones into blood which act on other organs. Diseases arise from excessive or insufficient levels of hormones.

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2
Q

What is the most common endocrine disease

A

Diabetes mellitus affects 7% of the uk population

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3
Q

What % of diabetes suffer from type 1

A

8%

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4
Q

What does type 1 diabetes cause

A

Weight loss, tiredness, polyuria, polydipsia (acute onset)

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5
Q

What % of people with diabetes have type 2

A

90%

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6
Q

What does type 2 diabetes cause

A

Increased weight (onset may be insidious and long term)

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7
Q

How do you diagnose diabetes

A

Using blood glucose levels

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8
Q

What blood tube do you use for glucose testing and why

A

The grey topped tube as it has fluoride which ingots metabolism of glucose by the blood cells.

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9
Q

What is the normal fasting plasma glucose level

A

Greater than or equal to 7 mmol/L

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10
Q

What is the normal random plasma glucose level

A

Greater than 11.1 mmol/L

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11
Q

Sometimes a glucose tolerance test is required, how is this done

A
  • measure fasting plasma glucose
  • give 75g of glucose orally
  • measure plasma glucose after 2 hours
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12
Q

What is the difference of in glucose tolerance tests for normal and diabetes

A

Diabetes- has a high rise and slowly decreases
Normal- medium rise and quick decrease

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13
Q

What is insulin excess called

A

Insulinoma

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14
Q

How is insulin excess diagnosed

A

By prolonged fasting and measuring proinsulin, insulin and c-peptide when hypoglycaemic

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15
Q

What is hypothyroidism

A

Problem with thyroid gland itself

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16
Q

What are symptoms of hypothyroidism

A

Everything is slow
T4 and T3 will be low
TSH increased

17
Q

What are symptoms of hyperthyroidism

A

Everything is fast
T4 and T3 increase
TSH decreased

18
Q

What are functions of the adrenal cortex

A

Hormones secreted are essential for life
Cortisol maintains blood pressure and volume
Cortisol also stimulates breakdown of protein and fat

19
Q

What causes primary adrenal insufficiency. Or Addison’s disease

A

Lack of cortisol, due to damage of adrenals

20
Q

What are clinical features of Addison’s disease

A

Lethargy
Weight loss
Pigmentation of creases on hand and feet
Abdominal pain
Dehydration

21
Q

How do you diagnose addisons

A

1 measure cortisol and serum electrolytes
2 short synacthen test

22
Q

What is the normal response to a short synacthen test

A

0 min cortisol = >225nmol/L
30 min cortisol = >500 nmol/L

23
Q

What is the Addison’s disease response to a short synacthen test

A

0 min cortisol = <225nmol/L
Little to no increased at 30 mins
ACTH elevated

24
Q

What is Cushing’s syndrome

A

Excess cortisol

25
Q

What are clinical features of Cushing’s syndrome

A

Hypertension
Truncal obesity (abdomen)
Thinning skin
Muscle weakness
Easy brushing
Moonface

26
Q

What test is used to diagnose Cushing’s

A

Dexamethasone suppression test

27
Q

What is the normal level for dexamethasone supression tests

A

Cortisol is <50 nmol/L

28
Q

What is the Cushing response to dexamethasone supression tests

A

> 50 nmol/L cortisol

29
Q

What is agromegaly

A

A growth hormone excess that causes gigantism