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30 Cards in this Set
- Front
- Back
Pancreatic Hormones
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insulin and glucagon
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Secretion of insulin and glucagon
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is controlled by the body's blood glucose levels
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Insulin - secretion
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secreted by beta cells in the pancreas called the islets of langerhans
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Insulin - promotes
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the transport of blood glucose into cells and the storage of glucose in the liver
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Glucose is
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energy or fuel for cells
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Insulin - inhibits
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glyconeogenesis (formation of new glucose from fatty acids and amino acids) and glycogenolysis (breakdown of glycogen into glucose) in the liver
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Glucagon
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secreted by the alpha cells in the islets of langerhans
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Glucagon promotes
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glycogenolysis (breakdown of glycogen into glucose) - increases blood glucose levels
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Insulin - works
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insulin secretion or administration is a decrease in blood glucose levels
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Blood Glucose levels
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normal - 70-100 mg/dl
above 110mg-dl insulin secretion increases below 70 mg/dl glucagon secretion increases |
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Prevention of Hyperglycemia
Prevention of Hypoglycemia |
Proper secretion of insulin
Proper secretion of glucagon |
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Diabetes Mellitus
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destroyed pancreatic beta cells
caused by genetic and enviromental factors which cause an anti-immune response results in decreased insulin production and resultant hyperglycemia involves insulin resistance at the cellular level |
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Diabetes Mellitus disease
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Chronic, systemic disease characterized by metabolic and vascular abnormalities- if caused by weight gain can sometimes be controlled by weight loss
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Diabetes Mellitus - Type I
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Juvenile, early onset, insulin dependent diabetes - must have insulin admin. Usually before age 20 - has sudden onset, 10% of all diabetics have type I
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Diabetes Mellitus - Type 2
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Adult onset, non-insulin dependent - patients usually overweight or obese, over 40 yrs old and have gradual onset of symptions - pancreas still produces some insulin, may be controlled with diet and oral agents, 90% of all diabetics
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Human source of insulin
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E.coli insulin is genetically altered (Humulin)
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Facts about Insulin
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Insulin is not effective when taken orally because it is destroyed in GI tract
metabolized in the liver, kidneys and muscle tissue usually given SQ by injection or insulin pump |
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Concentrations of Insulin
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almost always U-100 syringe
100 units per mil use a syringe that corresponds to the vial concentration |
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Storage of Insulin
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refrigerate unopened vials
can store opened vials at room temp. Only Lispro must be used in 28 days, rest of meds can go to expiration date |
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Types of Insulin
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Regular - Humulin R or Novolin R
Rapid acting- lispro (Humalog) Intermediate Acting (NPH) - Novolin N or Humulin N Long acting Insulin - insulin zinc Long acting - Lantus (insulin glargine) Inhaled Insulin Insulin Mixtures |
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Regular
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rapid acting, Humulin R or Novolin R - onset- 30 min. to 1 hr - Peak 2 to 4 hrs -
Duration - 5 to 7 hrs - meant to cover 1 meal Only regular insulin can be given IV only regular insulin used in hyperglycemic emergencies (DKA) |
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Sliding Scale
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0-200= 0 units
201-250 = 2 units 251-300 = 4 units over 300 = call b4 admin. insulin ask whether the patient will be eating their next meal |
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Questions to ask before administring insulin
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When is their next meal?
Are they NPO for a test? Are they complaining of nausea? |
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Rapid acting lispro (Humalog)
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most similar to physiologic insulin secretion after a meal and causes less hypoglycemia - most rapid acting - onset 15 min. - peak 30-90 min - duration 5 hrs
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lispro
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patients must eat within 15 min of lispro administration - works fast so be careful giving this med.
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NPH - intermediate acting (longer acting)
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Novolin N and Humulin N - onset 1-2 hrs - peak 8-12 hrs - duration 18-24 hrs
Will be CLOUDY looking |
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Long acting Insulin Zinc
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Insulin Zinc - not popular drug - onset 4-8 hrs = peak 10-30 hrs - duration 36 or more hours
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Long-acting Insulin glargine
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Lantus - -short-acting with long acting effect -
forms microprecipitates subcutaneously and has sustained release actions DO NOT GIVE with other insulins - Usually admin. SQ at bedtime- begins working 1 hrs and last for 24 hrs - NO PEAKING because sustained release |
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Inhaled Insulin
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only used with adults and cannot have lung disorders - adm. 10 min prior to the meal - onset 15 min - peak 30-90 min Duration 4-6 hrs - may cause hypoglycemia
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Insulin Mixtures
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Humulin 70/30 or Novolin 70/30 Humulin 50/50- 70 units intermediate (NPH) and 30 units of rapid-acting (R)
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