Endocrine Flashcards
Rapid-acting insulin:
prototype
onset
peak
duration
Lispro insulin
Onset: 15-30 min
Peak: 1/2 hr to 3 hr
Duration: 3-5 hr
Short-acting insulin
Prototype
Onset
Peak
Duration
Regular insulin
Onset: 0.5 to 1 hr
Peak: 1 to 5 hr
Duration: 6 to 10 hr
Intermediate-acting insulin
Prototype
Onset
Peak
Duration
NPH insulin
Onset: 1 to 2 hr
Peak: 4 to 14 hr
Duration: 14 to 24 hr
Long-acting insulin
Prototype
Onset
Peak
Duration
Insulin glargine U-100
Onset: 1 to 4 hr
Peak: none
Duration: 24 hr
List of rapid-acting insulin
Lispro
Aspart
Glulisine
Inhaled insulin
List of short-acting insulin
Regular insulin (U-500)
List of long acting insulin
Insulin Glargine U-100
Insulin detemir with higher doses
Ultra long insulin
U-300 insulin glargine or insulin degludec
How are insulins usually mixed?
Primarily intermediate acting (NPH) with some short (regular) or rapid (insulin lispro) acting
Pharmacological action of insulin
- Enhance cellular uptake of glucose to decrease blood levels
- Convert glucose into glycogen for storage
- Moves potassium into cells with glucose
When would someone with type II diabetes need insulin?
- bgl is not controlled with oral meds, exercise, and diet
- severe renal or liver disease
- painful neuropathy
- undergoing surgery
- in a state of severe stress
- DKA and hyperosmolar hyperglycemic
- hyperkalemia
define hypoglycemia
blood glucose < 70 mg/dL
Clinical presentation of hypoglycemia
Abrupt onset:
* Tachycardia
* Palpitations
* Diaphoresis
* Shakiness
Gradual onset:
* headache
* tremors
* weakness
* lethargy
* disorientation
Hypoglycemia intervention
- Administer glucose:
- 15 g carb snack (4 oz juice, 8 oz milk, glucose tabs)
- If unconcious: administer glucose parenterally or subq
Sulfonylureas
First gen: chlorpropamide
second gen: glipizide
Meglitinides
Repaglinide
Biguanides
Metformin
Thiazolidinediones (glitazones)
Pioglitazone
Alpha-glucosidase inhibitors
Acarbose
DPP-4 inhibitors
Sitagliptin
SGLT-2 inhibitors
Canagliflozin
Pharmacologic action of sulfonylureas
Insulin release from pancreas
Increases tissue sensitivity to insulin
Pharmacologic action of meglitinides
Insulin release from pancreas
Pharmacologic action of biguanides
- reduces glucose production in liver (suppresses gluconeogenesis)
- increases glucose uptake
- Decreases glucose absorption in GI tract
Pharmacologic action of glitazones
- increases cell response to insulin
- increases glucose uptake
- decreases glucose production
Pharmacologic action of alpha-glucosidase inhibitors
- Slows carb absorption and digestion
Pharmacologic action of DPP-4 inhibitors
- enhances incretin hormones, which promote release of insulin and decrease glucagon
Pharmacologic action of SGLT-2 inhibitors
- Excretes glucose through urine by preventing reabsorption
- Used with insulin in type I diabetes
Side effects and adverse effects of metformin
- GI effects (nausea, diarrhea, anorexia)
- Vitamin B12 and folic acid deficiency
- Lactic acidosis
Can oral diabetes drugs be used in pregnancy?
Yes, but with risk (categories B and C)
When are oral diabetic medications totally contraindicated?
Treatment of DKA
When is metformin contraindicated?
- severe infection
- shock
- Kidney impairment
- Hypoxia
- Alcohol use disorder
- Caution in pregnancy
Interactions with metformin
- Alcohol increases risk of lactic acidosis
- Cimetidine (histamine) increases risk of lactic acidosis
- Iodine-containing contrast media can cause acute kidney failure
Amylin mimetics prototype and route
Pramlintide
Subq
Incretin mimetics prototype and route
Exenatide
Subq
Pharmacologic action of amylin mimetics
- Mimics naturally occurring peptide hormone amylin to decrease gastric emptying time and inhibit secretion of glucagon
Pharmacologic action of incretin mimetics
Mimics naturally occuring glucagon-like peptide-1 type of incretin hormone by releasing insulin, decreasing glucagon, and slowing gastric emptying
Therapeutic use of amylin mimetics
Supplemental glucose control for type 1 or 2 diabetes
Therapeutic use of incretin mimetics
Supplemental glucose ocntrol for type 2 diabetes
Used with oral diabetes meds