- Absolute lack of insulin
-
Rapid-acting insulin
- decrease post prandial hyperglycemia
-
Fast onset and short DOA
- DOA 3-5hrs
- onset of <15mins
- peak 1-3 hrs
-
Drugs
- insulin lispro (Humalog)
- insulin aspart (Novolog)
- Insulin Glulisine (Apidre)
- preferred in use for cont. SubQ insulin infusion devices
- can be "acutely" mixed NPH w/o effecting rapid abs.
-
Short Acting insulin
-
Rapid onset
- 30min- 1hr
- pk- 2-3hrs
- DOA 5-8hrs
-
Formulations
- SubQ
-
IV
-
only insulin used IV
- IV for diabetic ketoacidosis
- short acting zinc crystalline
-
Drugs
- Regular Novolin R
- regular Humulin R
- Humulog
- Novolog
- injected 30-45min before meal
-
the DOA/Onset/ pk increase with size of dose
- delayed abs, dose dependant DOA, and variability of abs.(~25%) --> makes dosing unpredictable
-
Intermediate Acting insulin
-
dispensed as turbid susp. @ neutral pH w/ protamine and phosphate buffer
- NPH (neutral protamine Hagedorn)
- Onset 2-5hr
- DOA 4-12hrs
-
Drugs
- Humulin N
- Novolin N
-
Isophane insulin suspension
- uncomplex insulin +protamine
-
Long Acting insulin
- Slow onset of action
-
Drugs
-
Insulin Detemir (Levemir)
- DOA 24+ hrs
-
insulin Glargine (Lantus)
- no pk
- onset 1-1.5hrs
- max effect after 4-6hr
- max activity 11-24+ hrs
- Dont mix w/ other insulin
-
Premixed
- Novolin 70 NPH/ 30 regular
- Humulin 70 NPH / 30 Regular
- 50/50 NPL, Lispro
- 75/25 NPL, Lispro
- 70/30 NPA, Aspart
- Short acting& intermediate acting
-
More stable mixture than the rapid acting mixtures
- Isophane complexes
-
Major Concerns
- allergic rxns w/ NPH and protamine zinc insulin
- Prompt insulin (lente) not compatible w/ NPH or protamine zinc insulin
-
Goals of therapy
- replace the background or basal overnight, fasting, b/t meal as well as bolus or prandial insulin
- replicate normal physiologic insulin secretion
-
Insulin TX of special circumstances
-
Diabetic ketoacidosis
- fat being broken down to ketones
- fruity breath
-
SX
- n/v
- abdominal pain
- deap slow breathing
- change in mental state/status
- elevated blood/ urinary ketones/ glucose
- arterial blood pH > 7.3
- low Bicarbonate <15mmol/L
-
TX
- IV hydration
- insulin therapy
- maintenance of K & other electrolytes
-
Emergency TX
-
Glucagon
- used severe hypoglycemia
-
Insulin- medicinal
- 86 AA
-
2 polypeptide chains linked by 2 disulfide bonds
- Chain A most conservative in activity
-
half life 4min
- proinsulin half life 30 min
-
inhibit insulin release
- Alpha agonist
-
stimulate insulin release
- beta agonist
- cholinergics
-
effects
-
metabolism of
- carbs
- lipids
- protein
-
tissues
-
liver
- increase glucose uptake
- increase gluokinase
- increase glycogen synthesis, glycolysis, acetyl CoA production
- decrease glycogen break down
- increase fatty acid synthesis
-
adipose
- increase triglyceride synthesis
-
muscle
- increase glucose uptake
- increase glucose transporter
- increase glycogen synthesis, glycolysis, acetyl CoA production
- decrease glycogen break down
- brain is non responsive
-
admin
-
formulations
- SubQ
- IV
- IM
-
Inhalation
- exubera
-
injection
- stomach>arm>thigh>butt rate of abs
-
SE
- hypoglycemia
-
cough, sore throat, dry mouth
- Inhalation form
- Dispensed as clear solutions at neutral pH +zinc (increase stability & self life)