Antidiabetics Flashcards
What are the 2 agents that are used to INCREASE blood sugar?
Glucagon
Diazoxide (Proglycem)
Which cell types do NOT need insulin to get glucose?
Brain
Liver
RBCs
What happens to levels when you inject insulin (in anyone)
Blood glucose:
Pyruvate and lactate:
Inorganic phosphate:
Plasma potassium:
Glucose decreases
Pyruvate and Lactate: increase (metabolism)
Phosphate: decrease (metabolism)
Potassium- decreases. Glucose in cells makes Na-K pumps work more
(PROBABLY not on test)
Which GLUT receptors are on the B-cells in the pancreas?
GLUT-2
Which GLUT transporter is in muscle and adipose?
GLUT 4 (needs insulin)
Do we use insulin for Type 1 or Type 2
Both
What are the adverse reactions of insulin?
HYPOGLYCEMIA**
Weight gain***
Cough (inhaled only)
Local reactions (allergy)
Lipodystrophy and lipohypertrophy
What are some symptoms of hypoglycemia
Tachycardia
Confusion
Vertigo
Sweating
Cognitive dysfunction/ death
What kinds of things can cause hypoglycemia in a patient who uses insulin?
Taking too much insulin
Change in insulin type preparation
Too many insulin secreting drugs
Spontaneous decreases in insulin requirements (no longer pregnant or stressed out)
Vigorous exercise ⛹️♂️
Failure to eat
Overindulgence in alchol🍻🍸🥃🍾🍷🥂🍺🍹
How do you treat hypoglycemia in someone who is unconscious?
Give 50% glucose solution IV until they wake up
Could also theoretically give glucagon but no one does that
Do we give oral glucose to unconscious patients
No
Why do patients get local allergic reactions to insulin?
Because they get lazy with their injection technique. Reusing needles, injecting through clothes etc
What kinds of things increase insulin requirement?
ANYTHING that increases stress**
….Like SURGERY, preganncy, thyrotoxicosis, infection
Acromegaly and Cushings
If your patient is having surgery, what do you need to do to their insulin dose?
Increase it! (Surgery is stressful)
What are the 4 preparation types of insulin?
Rapid
Short (Regular)
Intermediate
Long acting
What are the 4 types of rapid acting insulin available
Lispro
Aspart
Glulisine
Inhaled*
Which insulins are clear solutions and can be given in an IV (like you would do for an unconscious patient)
Rapid acting
Short acting
What kind of insulin is used in insulin pumps?
Rapid acting
Which insulin’s have been modified to provide prolonged action?
NPH (Turbid)
Glargine (low pH)
Detemir (myristoylated)
I DONT KNOW WHAT THIS MEANS
What kind of insulin is used first in type II DM?
Long-acting (basal)
What do you need to do if you’re going to inject your insulin yourself (instead of have a pump)
Create an insulin profile and eat to fill it
How do you take insulin if you use a pump?
Adjust insulin blouses according to what you eat
More similar to a natural insulin release pattern
What is necessary for glucagon to work to increase blood glucose?
You must have glycogen stores!**
NOT EVERYONE DOES
What are two uses for glucagon that are not to increase blood sugar
Beta blocker overdose- will increase heart rate and contractility
Radiology- relaxes the intestine
What is Diazoxide (Proglycem)?
It is a thiazide (no diuretic effect though) that vasodilators and RAISES blood sugar by inhibiting insulin secretion, decreasing peripheral glucose utilization, and stimulating hepatic glucose production
Who do we give Diazoxide (Proglycem) to?
Patients with insulinoma (insulin secreting tumor)
Diazoxide inhibits insulin secreting and raises blood sugar
What are some of the things you need to consider before giving a patient an anti diabetic agent?
Effect on cardiovascular disease (CVD is the #1 killer of diabetics!)
Hypoglycemia risk
Impact on weight
Glucose reduction efficacy
Side effects, cost, patient preferences
What are the 4 rapid acting insulins?
Insulin lispro (Humalog)
Insulin aspart (NovoLog)
Insulin glulisine (Apidra)
Insulin, inhaled (Afrezza)
What are the short acting insulin’s
Regular Insulin (Novolin R, Humulin R)
What are the intermediate acting insulins?
NPH or Isophane Insulin (Humulin N, Novolin N)
What are the long acting insulins?
Insulin glargine (Lantus)
Insulin detemir (Levemir)
Insulin degludec (Tresiba)
What is the #1 killer of diabetics
cardiovascular disease
What is the initial drug of choice for Type 2 diabetics, as long as their A1C is under 10%?
Metformin
What is the MOA of Metformin?
Decreases glucose in an insulin-INDEPENDENT matter:
Removes glucose from blood (AMPK)
Secretion of GLP-1
Decrease glucose absorption from GI
Decrease glucagon levels
Decreased gluconeogenesis (mitochondrial enzyme inhibition)
What glycemic effects does metformin have?
Decreases A1C a LOT! (1-1.5%)
Promotes a euglycemic state *!!! (as opposed to hypoglycemic)
Why is it ok to give metformin to women with PCOS that DONT have diabetes?
Because metformin promotes a euglycemic state and NOT a hypoglycemic state
What are the cardiovascular effects of metformin?
Lower triglycerides by 15-20%
Decrease Macrovascular events (aka heart attacks)*******
What are some “other” effects of metformin?
Weight neutral (does NOT increase insulin release, so it has no effect on weight!)***
Decrease all-cause mortality events
BEST pharmacologic therapy for diabetes prevention in prediabetics**
What drug should prediabetics take to prevent diabetes?
Metformin
Will metformin cause weight gain
No
How is metformin excreted?
Through the kidneys
Remember the whole contrast and holding metformin thing?