Diabetes Flashcards
What is diabetes?
A chronic multi-system disease related to abnormal or impaired insulin utilization
Diabetes is characterized by
Hyperglycemia resulting from lack of insulin, lack of insulin effect, or both
Diabetes is a combination of causative factors
Genetic, hereditary
Autoimmune
Lifestyle
Pancreas
Exocrine function
Produces enzymes for digestion
Pancreas
Endocrine function
Islets of Langerhans
Hormones: insulin and glucagon
Liver
Stores and produces glucose
Insulin is made by the
Beta cells of the pancreas and is released in small amounts to the blood stream
Liver and muscle cells store
Excess glucose as glycogen
Skeletal muscle and adipose tissue are
Insulin dependent tissues
(Insulin is required to “unlock” receptor sites in cells, allowing transport of glucose into cells to be used for energy)
Glucagon is released from the
Alpha cells of the pancreas
Insulin
Facilitates transport
Insulin is a hormone that is produced by
The beta cells in the islet of langerhans
Insulin is normally released in
Small increments when food is ingested
Counterregulatory hormones
Cortisol
Growth hormone
Epinephrine
Glucagon
Insulin resistance
The body is making keys (insulin), BUT the keys don’t work very well at opening the locked doors of the cells in the body
Insulin insufficiency
The body is making insulin, but not enough
Hypoglycemia
Low blood sugar
Hypoglycemia occurs when
There is too much insulin in proportion to available glucose
Hypoglycemia ___________ _____________
Worsens rapidly and needs to be treated ASAP
What is released with hypoglycemia?
Counterregulatory hormones
What provides a defense against hypoglycemia?
Suppression of insulin secretion and production of glucagon & epinephrine
Hypoglycemia untreated
Loss of consciousness
Seizures
Coma
Death
Causes of hypoglycemia
Alcohol intake without food
Too little food
Too much diabetic meds (insulin, orals)
Too much exercise without adequate food intake
Weight loss without change in meds
Sendentary lifestyle with an unusually active day
S/S of hypoglycemia
Cold, clammy skin
Numbness of fingers, toes, mouth
Tachycardia, palpitations
Headache
Nervousness
Faintness, dizziness
Stupor
Slurred speech
Hunger
Changes in vision
Seizures, coma
Irritability
Epinephrine release causes
Shakiness
Palpitations
Nervousness
Diaphoresis
Anxiety
Hunger
Pallor
Hypoglycemia can affect
Mental functioning, because the brain needs a constant supply of glucose in sufficient quantities to function properly
Hypoglycemia can mimic
Alcohol intoxication
Neuroglycopenia manifestations
Difficulty speaking
Visual changes
Stupor
Confusion
Coma
Physiological consequences of hypoglycemia
Neurological symptoms
Hypoglycemia unawareness
Hypoglycemia treatment
Rule of 15
IV dextrose
Glucagon IM or sub Q
Bagsimi (glycagon) nasal
Factors affecting hypoglycemia
Hospitalization
-overuse of SSI
-lack of dosage changes when dietary intake is changed
-overly vigorous treatment of hyperglycemia
-delayed meal after fast acting insulin is used
Hyperglycemia
High blood sugar (>200 mg/dl)
Hyperglycemia occurs when
There is not enough insulin working, too much glucose in the blood
Hyperglycemia has a more
Gradual onset of
Hyperglycemia untreated can lead to
Diabetic ketoacidosis (DKA) or Hyperosmolar Hyperglycemia syndrome (HHS)
Coma and death
Causes of hyperglycemia
Illness, infection
Corticosteroids
Too much food
Not enough diabetic medication (insulin, oral)
Inactivity
Emotional, physical stress
Poor absorption of insulin
Hyperglycemia S/S:
Hot and dry
Polyuria
Polydipsia
Polyphagia
Weakness, fatigue
Blurred vision
Headache
Glycosuria
N/V, abdominal cramps
Mood swings
Slow healing wounds/infections
Treatment of hyperglycemia
Continue diabetic meds
Check blood glucose frequently
Check urine for ketones
Drink fluids at least on hourly basis
Exercise/stay active
factors affecting hyperglycemia
Hospitalization
-changes in treatment regimen
-meds
-IV dextrose
-overly vigorous treatment of hypoglycemia
Diagnostic studies for DM
HA1C
Fasting plasma glucose
Oral glucose tolerance test
Random blood glucose
C-Peptide test
Hemoglobin A1C (HA1C) is also known as
Glycosylated Hemoglobin A1C
Glycosylated hemoglobin (HA1C) s
The hemoglobin that glucose is bound
Hemoglobin A1C reflects
The average blood glucose levels over the past 2-3 months
Hemoglobin A1C levels
Normal: less than 5.7%
Pre-diabetes: 5.7-6.5%
Diabetes: 6.5% and higher
Fasting plasma glucose (FPG)
Checks fasting blood sugar levels
Blood is drawn at least 8 hours after the last meal eaten
Fasting plasma glucose levels
Normal: less than 100 mg/dL
Pre-diabetes: 100-125 mg/dL
Diabetes: 126 mg/dL or higher
Oral Glucose Tolerance Test (OGTT)
Two hour test that checks blood sugar before and two hours after a glucose drink is consumed
-tests how well your body processes sugar!
Oral glucose tolerance test levels
Normal: less than 140 mg/dL
Pre-diabetes: 140-199 mg/dL
Diabetes: 200 mg/dL or higher
Random blood glucose
Blood can be drawn at anytime
Seen on a BMP or CMP
Random blood glucose levels
Diabetes: 200 mg/dL or higher plus symptoms of diabetes
C-Peptide test
Measures the amount of C-peptide in the blood or urine
-can help determine which type of diabetes a patient has
-can reveal how well treatment is working
C-Peptide test levels
Low: Type 1 diabetes
Normal: 0.5 to 2.0 ng/mL
High: Type 2 diabetes
Blood glucose monitoring
Finger stick (most common)
Continuous glucose monitoring (CGM)
Provides timely feedback to patient
Advised before each meal and bedtime
Most common error in blood glucose monitoring
Blood sample size
Types of diabetes
Type 1
Type 2
Gestational
Type 1 diabetes
Autoimmune disease
Results from beta cell destruction in the pancreas
Autoantibodies present for months to years before clinical symptoms
Leads to absolute insulin deficiency
Insulin dependent
Type 1 risk factors
Autoimmune
Viral
Medically induced
S/S of type 1
Polyuria
Polydipsia
Polyphagia
Weight loss
Fatigue
^ frequency of infections
Rapid onset!!
Familial tendency
Type 1 diabetes diagnosis
HA1C
Fasting plasma glucose
Oral glucose tolerance test
Random blood glucose plus symptoms of diabetes
Type 1 diabetes treatment
Insulin dependent
-administration of subQ insulin multiple times a day
-external insulin pump
Tight glycemia control
Dietary modifications
Active lifestyle
Type 2 diabetes
Caused by insulin resistance or deficiency
More common in adults
Progressive disease, slower onset!!!
Types 2 causes
Insulin resistance or deficiency
Pre-diabetes
Metabolic syndrome
Type 2 modifiable risk factors
Obese/fat distribution
Physical inactivity/sedentary lifestyle
Hypertension/high cholesterol
Poor diet
Smoking/alcohol
Type 2 non-modifiable risk factors
Family history
Race/ethnic background
Age
Pre-diabetic & Gestational diabetes
PCOS
Chronic glucocorticoid exposure
Type 2 diabetes S/S
Genetic mutations (insulin resistance & familial tendency)
Polyuria, nocturia
Polydipsia
Polyphagia
Recurrent infections
Prolonged wound healing
Visual changes
Fatigue
Prediabetes
Metabolic syndrome
Type 2 diagnosis
HA1C
Fasting plasma glucose
Oral glucose tolerance test
Random blood glucose plus symptoms of diabetes
Type 2 treatment
Diabetic meds (insulin or oral)
Lifestyle changes
Tight glycemia control
Increase activity levels
Short term diabetic complications
Hypoglycemia
Hyperglycemia
Ketoacidosis
Long term diabetic complications
MICROVASCULAR
Retinopathy
Nephropathy
Neuropathy
Long term diabetic complications
MACROVASCULAR
Cerebrovascular
Cardiovascular
Peripheral vascular
Long term diabetic complications
OTHER
Foot ulcerations
Amputations
Sexual dysfunction
Preventing complications
Patient education
Assess barriers to learning
Teach in increments
Promote self care
Adjust regimen to meet needs
Barriers
Degree of life changes/complexity of management plan
Cost of care
Access to treatment
Cultural factors
Lack of family support
Lack f knowledge
Fears
Other stressors
Exercise is
An essential part of prediabetes and diabetes management
Exercise
Decreases insulin resistance and can have direct effect on lowering blood glucose levels
What can occur is a sedentary patient that has an unusually active day?
Hypoglycemia
ADA exercise recommendations
150 mins of exercise a week (30 mins, 5 days a week)
DM2 pts to perform resistance training 3 times a week
If taking diabetic medications, there is an increased risk for
Hypoglycemia
Alcohol
Moderation
Inhibits gluconeogenesis
Monitor blood glucose
Consume carbs
High in calories