Block Six Flashcards
(168 cards)
What are the insulin drugs?
Rapid/short-acting bolus insulins: - Novorapid Short-acting bolus insulins: - Actrapid - Humulin R Intermediate-acting basal insulins: - Protaphane - Humulin NPH Long-acting basal insulins: - Lantus - Biphasic insulins Biphasic insulins (mixtures providing for both immediate and prolonged action) - Humulin 30/70
What is insulin used for?
- Lower and control blood glucose levels in diabetics (type 1 and type 2)
- Lower and control blood glucose levels in the person with diabetes (type 1 and type 2) who has developed a DKA or HONK syndrome (hyperosmolar nonketotic)
- In association with IV dextrose administration.
- With glucose as an emergency intervention for hyperkalemia
- To treat gestational diabetes mellitus
What is the main aim of treating gestational diabetes?
To provide adequate treatment for the mother while minimising adverse effects on the foetus, both short term and long term
What is currently the only oral hypoglycaemic that is used for treating gestational diabetes?
Metformin
What is the mode of action of insulin?
Binds to insulin receptors in target tissue, promoting uptake of glucose into the target tissue from the blood
What is the effect of insulin and what can excess effect do?
- Lower blood glucose levels
- Can result in a ‘hypo’
What is the main adverse effects of insulin?
- A ‘hypo’
- Also allergies, ‘resistance’, weight gain and lipodystrophy
Why should injection sites of insulin be rotated?
To prevent lipodystrophy
What are insulin antagonists and how to they affect insulin requirements?
- Drug interactions which oppose the physiological action of insulin
- Increase insulin requirements
What are the three main types of insulin regimen?
- Basal-bolus
- Continuous sub-cutaneous infusion
- Biphasic
What is the basal-bolus regimen?
Use long-acting (basal) insulin injected once or twice daily to mimic normal basal insulin secretion, and a short-acting (bolus) insulin injected before or with meals and snacks
What is the continuous sub-cutaneous infusion regimen?
A short-acting insulin is delivered by a pump. Small doses are given over 24 hours, i.e. a basal rate, with boluses delivered at mealtimes
What is the biphasic regimen?
An intermediate-acting insulin mixed with a short-acting insulin is injected twice daily, i.e. before breakfast and dinner
What is the glucagon and its effect?
- A hormone
- Raises blood glucose levels
What are symptoms of hypoglycaemia?
- Paleness
- Sweating
- Confusion
- Tachycardia
- Headache
- Hunger
- Weakness
- Motor and/or emotional disturbances
- Coma
- Death
What is treatment for mild hypoglycaemia?
Food source such as glucose containing drink
What is treatment for severe hypoglycaemia?
- IV glucose-in- dextrose solution or administration of glucagon via IV, IM or SC routes is used and a result (increase in BGL) should be observed within 20 minutes
- Oral source of carbohydrate after glucagon injection
What are common adverse effects of hypokalaemia?
- Nausea
- Vomiting
What are oral hypoglycaemics drugs?
- Metformin (class - Biguanide)
- Vidagliptin (class - DPP-4 inhibitors)
- Gliclazide (class - Sulphonyureas)
- Pioglitazone (class - Thiazolidinedione)
- Dapagliflozin (class - SGLT2 inhibitor)
What is the therapeutic use for oral hypoglycaemics?
To lower and control blood glucose in the person with type 2 diabetes mellitus
For which diabetes are oral hypoglycaemics not effective?
Type 1
Which oral hypoglycaemic is the preferred first-line treatment?
- Metformin
- WhIt is not only effective in reducing HbA1c levels, but is safe with a low risk hypoglycaemia, does not cause weight gain, and may provide patients with additional cardiovascular benefits
Why is metformin the preferred first-line oral hypoglycaemic treatment?
- Effective in reducing HbA1c levels
- Safe with a low risk hypoglycaemia
- Does not cause weight gain
- May provide patients with additional cardiovascular benefits
What combination of oral hypoglycaemic is given if patients who do not meet their HbA1c (glycemic control) target?
Metformin with vidagliptin (Galvumet)