Metabolism: Diabetes Mellitus, Obesity Flashcards
(100 cards)
Is the process of biochemical reactions occurring in the body’s cells that are necessary to produce energy, repair cells and maintain life
Metabolism
Through the release of hormones, such as insulin, the endocrine system controls the cellular activity that regulates growth and body metabolism.
How metabolism works
- Affects 20.8 million people in the US
- Affects 200 million world-wide.
- Is two and a half times more common in African-Americans and Hispanic Americans
- Is 5x more common in Native Americans.
- Is the 7th Leading cause of death in the US.
- The CDC estimates that a child born in 2000 has a 1 in 3 chances of developing DM in their lifetime.
Statistics on Diabetes Mellitus
kills more quickly
hypoglycemia
kills slowly overtime
hyperglycemia
People live longer.
Obesity has increased in the general population
The use of insulin and other anti-diabetic agents.
Reasons why more people have Diabetes than ever before..
- 25x more likely to develop blindness.
- 17x more likely to develop kidney failure.
- 20x more likely to develop gangrene.
- 15x more likely to require amputation.
- 2x as likely to have an MI or CVA.
People with Diabetes
- All body tissues and organs require a constant supply of glucose.
- Not all tissues require insulin for glucose uptake
- The brain, the liver, the intestines and the renal tubules DO NOT require insulin.
- Skeletal muscle and adipose tissue DO require insulin for glucose movement into the cells.
Blood glucose homeostasis is maintained through the action of insulin and glucagon.
- increased plasma glucose levels
- increased plasma levels of amino acids.
- increased plasma levels of fatty acids.
- incretin hormones-GLP-1 and amylin
How does the pancreas know to secrete insulin?
70-100 mg/dl
Normal blood glucose level is between.
- Includes a group of hormones that will increase glucose in times of hypoglycemia, stress, growth or increased metabolic demands.
- These hormones include: Glycagon, Epinephrine, Norepinephrine, Growth Hormone, and Cortisol.
- Diabetes Mellitus is a Comples disorder of carbohydrate, fat and protein metabolism that is primarily a result of a deficiency or complete lack of insulin secretion.
Counterregulatory System
Complex disorder of carbohydrate, fat and protein metabolism that is primarily a result of a deficiency or complete lack of insulin secretion.
Diabetes Mellitus
- Type I
- Type II
- Gestational
- Pre-diabetes;
- impaired fasting glucose (blood glucose level of 100-125 when fasting)
- impaired glucose tolerance (blood glucose between 140-199 when undergoing a 2 hr. GTT)
- Other Specific Conditions resulting in hyperglycemia such as genetic defects. Disease of the pancreas, drug induced.
Classifications of Diabetes Mellitus
- Age of Onset: can appear at any age, usually young, less than 30 years of age.
- Characterized by a sudden onset
- Etiology: Environmental and Autoimmunity response, may have been inherited (gene coding for HLA-DR and HLA-DQ), or may be the result of a viral infection
- Risk for general population is 1 in 400 and the risk for those who have at least one parent with diabetes is 1 in 20.
Type I Diabetes Mellitus
- Age of onset: may occur at any age, but occurs most commonly in people over 40 years of age.
- Common in the obese (esp. in the upper body)
- Onset is slow (over years)
- Heredity plays dominant role, offspring of pts. with type 2 DM have a 15% chance of developing DM and a 30% risk of having IGT
- Metabolic Syndrome called syndrome X plays a role.
- Common in Hispanic Americans, Native Americans and African Americans.
- Increasing chance with Aging, esp. after age 65.
- Often follows gestational deabetes.
- Obesity is common.
Type 2 Diabetes Mellitus
- decrease in the sensitivity of the cells to insulin (insulin resistance)
- decreased insulin production
- defect at the receptor site. both in and outside cells.
- decrease in the # of receptor sites at the cell level.
- poor control of liver glucose output
Possible causes of Diabetes Mellitus; Type 2
*90% beta cells in pancreas phase out than 10% beta cells start feeling symptoms..
-losing protein; losing weight.
-poor wound healing
-increase urinating
-dehydrated
-diabetic ketoacidosis
Cells starving. glucose not getting to cells; fat break down; forms increasing triglycerides and cholesterol.
Cardinal Signs DM1
180 mg/dl glucose in blood starts to pee it out.
glucose in urine; DKA (total lack of insulin)
thick blood
hemoconcentration
hyperosmolarity
- Assess the airway, LOC, hydration (isotonic 0.9%), electrolytes and blood glucose levels
- Returning Serum pH to normal
- Correcting fluid and electrolyte imbalances (in the presence of mild, moderate, or severe dehydration; decreased HCO3, increased K (mild), decreased K (severe), decreased Na (moderate to severe), decreased Ca, Mg, PO4, pH
- Lowering hyperglycemia (usually above 250 mg/dl) Reg 70-100; increase b/c don’t want to cont. going down. IV stays in body for a couple of hours. If below 250 would have to give dextrose; hypoglycemia worse than hyperglycemia.
- Blood sugar @ 180 mg/dl causes you to urinate.
Treatment for DKA Type I DM
Called Maturity onset diabetes of the young (MODY)
Children Type 2 Diabetes Mellitus
Regular insulin only kind given in an IV!!
Need to know DM
- Administration of Insulin
- Symptoms of hyper/hypoglycemia
- serum glucose monitoring
- Diet
- Long term complications**
- Prudent Living
- Sick day rule
Pt teaching for type I diabetes
- Polyuria
- polydipsia
- polyphagia
- blurred vision
- weightloss
- fatigue
- poor wound healing
If CHF patient: 0.045% NS for dehydration.
S & S Diabetes Mellitus
Cardinal signs
Keep an eye on kidney function because don’t want too much K; kill them
Watch urine output 30 ml/hr; no more