1 diabetes mellitus dr. belle erickson with thanks to karen mckenna, msn, rn
TRANSCRIPT
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Diabetes Mellitus
Dr. Belle EricksonWith thanks to
Karen McKenna, MSN, RN
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PANCREAS - An Endocrine Gland
Islets of Langerhans– Beta Cells
» INSULIN
– Alpha Cells» GLUCAGON
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INSULIN Lowers blood sugar by:
– Transporting glucose into cell• Receptor sites
– Converting glucose to glycogen for storage in muscle and liver tissue(glycogenesis)
– Converting excess glucose into fat cells, forming lipids from fatty acids (lipogenesis) and promoting storage in adipose tissue
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GLUCAGON
Known as Hyperglycemic agent
Promotes activities that raise blood sugar- - -
• Converting of stored glycogen to glucose (Glycogenolysis)
• Formation of glucose from protein and fat sources (Gluconeogenesis)
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Hormones affecting CHO metabolism ACTH (Adrenocorticotropic hormone)
and Glucocorticoids– enhances gluconeogenesis
Epinephrine – enhances glycogenolysis
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Vocabulary Glucose Glucagon Glycogen Glycogenesis Gluconeogenesis Glycogenolysis Lipogenesis Glycolysis
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Carbohydrate Metabolism
Active transport of glucose into cells & metabolism of glucose with release of energy
Storage of glucose Conversion of glycogen back to glucose Conversion of proteins to glucose
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CHO (not enough)
Decreased blood sugar & depleted glycogen stores
Unable to use available glucose
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Body needs energy source
Catabolism of fats and proteins• Where?
Ketones
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Diabetes Mellitus
Chronic disorder characterized by hyperglycemia– Imbalance between Insulin supply &
demand Abnormal metabolism of fat,
carbohydrate, & protein
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Types of DM
*Type 1 (IDDM) 10 - 15 % of all Diabetics
*Type 2 85 - 90-% of all cases
Secondary Gestational (High Risk) Impaired Glucose Tolerance
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Type l (Type I)
IDDM = Insulin Dependent Diabetes MellitusJuvenile Diabetes
Body produces NO INSULIN
Must take at least one injection of insulin per day to control blood sugar
Usually occurs before 30 years old
Body weight thin or ideal
Onset abrupt
Know This StuffKnow This Stuff
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TYPE 2Type II
Adult/Maturity OnsetNIDDM = Non Insulin Dependent Diabetes Mellitus
Body does not produce enough insulin
and/or
Body cannot use the insulin it has made
Know This StuffKnow This Stuff
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TYPE 2 Type II
Adult/Maturity OnsetNIDDM = Non Insulin Dependent Diabetes Mellitus
May control blood sugar with diet and exercise alone (but may take oral meds. or insulin)
Clients usually > 35/40 years old Clients usually overweight/obese 1/2 go undiagnosed for years & by then
complications can be underway
Know This StuffKnow This Stuff
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RISK FACTORS
Heredity– Race
Increased Age Obesity Stress Viruses Diet Auto-immune Environment
_____Type______
1 2
1 caucasions 2
2
2
? 2
1
2
1 2
1
African,Hispanic,Asian, Native Americans
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DM - Pathophysiology
Lack of Insulin Glucose
• Where?• ECF
Fat & Protein breakdown
Ketosis & Negative Nitrogen balance
Hyperglycemia - - - WHY?
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Pathophysiology (cont’d)
Intracellular fluid deficit
Glycosuria
ECF deficit
Signs of DM
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Four Cardinal Symptoms
Polyuria
Polydypsia
Polyphagia
Weight Loss
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WARNING SIGNS -TYPE 1usually occur suddenly
3 “poly’s” & weight loss irritability weakness and fatigue nausea and vomiting
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WARNING SIGNS -TYPE 2 usually occur less suddenly & may be very mild
any of the Type 1 signs recurring or hard-to-heal skin, gum or
bladder infections drowsiness blurred vision tingling or numbness in hands or feet itching
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Assessment - Lab Studies
FBS
Postprandial glucose
Glycosylated Hgb (Hb A1c) normal value is 3-8%
(Oral Glucose Tolerance Test =OGTT)(Fractionals)
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Control
Normal FBS
B.S. 180mg 2hrs. after a meal
Glycosylated Hgb 10% or less
Normal weight and general good health
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Diabetes Management
Diet management
Physical Activity
Medications
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Recommended Nutrient Intake
PROTEIN 10 -20% of total energy intake
FAT < 30% (Depends on lipid & glucose levels)
CARBOHYDRATE 40-60% of total intake (Based on glucose & lipid levels and client’s habits)
NCS
***FIBER*** 20-35 grams
Fiber slows/moderates blood absorption of carb/glucose
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6 MAJOR EXCHANGE LISTS
MILK Non-Fat, Low Fat
VEGETABLE All Non-Starchy Vegetables
FRUIT All Fruits & Fruit Juices
BRE AD Bread, Cereal, Pasta,
Starchy Vegetables
& Prepared Foods
MEAT Lean Meat, Medium &
High Fat & Other
Protein Rich Food
FATS Polyunsaturated, Saturated and Non Saturated
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Medications
Type 1– Insulin
• Administered SQ or IV NOTNOT ORALLY ORALLY
NOTNOT IN TUBE IN TUBE FEEDINGSFEEDINGS
Type 2– Oral Hypoglycemic Agents– Insulin
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Insulin
Types of insulin
Duration of action• Short - Intermediate - Long
Action• Onset - Peak - Duration
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Insulin - (cont’d)
Concentration– Expressed in Units
• U100
Insulin Order• NPH Humulin (U100) 32U SQ daily before
dinner
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Types of Humulin Insulin and Comparative Actions
Action, hr*Action Preparation Appearance Onset Peak Duration
Short-acting Humalog (insulin Clear Immediate 0.5-1.5 2-4lispro injection)
Regular Clear 0.5-1 2-3 3-6
Intermediate-acting NPH Cloudy 2-4 4-10 10-16
Lente Cloudy 3-4 4-12 12-18
Premixed Cloudy 0.5-1 2 peaks: 16-24 (70% NPH, 3-4 and 8-12 30% regular)
Long-acting Ultralente Cloudy 6-10 None 18-20
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Sliding Scale InsulinMeasure BG at -7am -11am - 4pm - 9pm
Give Humulin Regular Insulin
BG Value Dosage
150-200 0 units
201-250 2 units
251-300 4 units
301-350 6 units
351-400 8 units
over 400 call MD
under 50 give 6oz OJ
repeat BS
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Insulin
Dosage– Individual requirements
– Individual response
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Insulin Administration
Check Order
Gather equipment
Insulin - Precipitate
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Administration - cont’d
Combining Insulins– 30U of NPH & 6U of Regular
Drawing up
Injecting– NO aspiration - 900 angle not 450
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Special Things About Regular Insulin
Only one to give IV Only one to give in Emergencies Only one to give for coverage Given via Insulin Pump (or Humalog)
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Teaching Pathophysiology Diet Exercise Diabetes Mellitus ID Sexuality Community Resources Stress Management Health Care
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Teaching
Home management– Insulin
• administration • storage• travel• exercise• sick days
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Insulin pumps Mimic release of pancreas
– electro - mechanical with computer chip
Basal rate (++)
Sub-Q
Complications
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Oral Hypoglycemic Agents Sulfonylureas Insulin ? Functioning Beta Cells OOC on diet and exercise Action
– release insulin from beta cells– enhance sensitivity of receptor sites
*Metformin - (Glucophage) guanidine derivative not a sulfonylureas
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Physical Activity
Exercise– Lowers BS levels uptake of free fatty acids– lower cholesterol & triglycerides– promote cardiac stabillity– reduce stress & sense of well-being