Endocrine Flashcards
Treatment of cranial diabetes insipidus
Vasopressin
Desmopressin
ADH drugs
Treatment of nephrogenic diabetes insipidus
Carbamazapine
Thiazide diuretics - paradoxical effects
Oxytocin
Side effect of desmopressin
HypONatraemic convulsions
due to extreme dilution of water
When to inform DVLA of diabetes
- All drivers treated with insulin must inform DVLA
- Drivers to notify DVLA if the have episodes of hypoglycaemia
- Drugs with greatest risk of hypoglycaemias: insulin, sulphonylurea, meglitinides
DVLA advice with diabetes
Target blood glucose while driving
- Avoid hypoglycaemia and know warning signs & actions to take
- Carry glucose meter & test strips when driving
- Check blood glucose at least 2 hours before driving and every 2 hours while driving
- Blood glucose should always be >5 mmol/L while driving
- Take snack if blood glucose falls to or below 5 mmol/L
What to do if blood glucose goes below 5 mmol/L while driving
- STOP vehicle in safe place
- Switch off engine
- Eat or drink suitable source of sugar
- Wait until 45 minutes after blood glucose is normal
- Continue journey
Advice on alcohol consumption with diabetes
- Alcohol can mask the signs of hypoglycaemia
- Drink in moderation and with food
Symptoms of hypoglycaemia
- Confusion, unconsciousness, change of behaviour
- Difficulty concentrating
- Slurring speech & convulsions
- Hunger
- Palpitations (tachycardia)
- Shaking and trembling
- Sweating
- Double vision
- Headache
What is the oral glucose tolerance test used to test for?
How is it carried out?
- Establish gestational diabetes
- Diagnose impaired glucose tolerance
- Involves measuring blood glucose conc after fasting for 8 hours and then 2 hours after drinking a standard anhydrous glucose drink
Not for testing diabetes
What is HbA1c?
What’s it used for?
when is it performed?
- Test for red blood cells with glucose linked
- Used to diagnose Type 2 diabetes ONLY
- How well you’ve been controlling blood sugar in the past 2-3 months in type 1 and type 2
- Predict microvascular and macro vascular complications and mortality
Performed at anytime of the day and doesn’t require any special preparation
When won’t you use HbA1c in diagnosing diabetes
- Type 1 diabetes
- In children
- During pregnancy
- Women up to 2 months postpartum
- Symptoms < 2 months
- Treatment with meds that can cause hyperglycaemia, pancreatic damage, CKD, HIV
How often should you monitor HbA1c in diabetics
- Type 1: every 3-6 months (more frequently if blood glucose changing rapidly)
- Type 2: every 3-6 months until stable then monitor every 6 months
What tests are used in diagnosing type 2 diabetes
HbA1c
Fasting blood glucose test
What test is used in diagnosing gestational diabetes
Oral glucose tolerance test (OGTT)
What test is used in diagnosing type 1 diabetes
Random blood glucose test
Examples of diabetic complications
Retinopathy
Nephropathy
Neuropathy (pain, numbness & weakness)
Premature CVD
Peripheral arterial disease
Symptoms of Type 1 Diabetes
- Polydipsia: excessive thirst
- Polyphagia: excessive hunger
- Pulyuria: excessive urination (especially at night)
- Weight loss
- Irritability and other mood changes
- Fatigue and weakness
- Blurred vision
What is the glucose level in random hyperglycaemia
> 11 mmol/L
Target HbA1c
>/= 48mmol/mol (6.5%)
What BMI indicates rapid weight loss
<25kg/m
What is the fasting plasma glucose level on waking
5-7 mmol/L
I wake at 5 to 7
What is glucose target before meals
4-7 mmol/L
Be4 meals
What is glucose target after meals
5-9 mmol/L
I dine at nine
Random plasma glucose concentration target
< 11 mmol/L