Diabetes Flashcards
Diabetes mellitus
- diabetes = a group of metabolic conditions meaning a malfunction in the way the body either produces insulin, uses insulin, or both
Insulin: - pancreas makes insulin
- insulin is a hormone that helps transport glucose from food into the body’s cells to be used for energy
- helps regulate glucose levels (used for energy)
Blood glucose: - fluctuates throughout the day
- diabetes causes the levels to go way above (hyperglycemia) or below normal (hypoglycemia)
- what we eat, how much we move, how we’re feeling
What happens when having lack of insulin?
- the body breaks down its own fat or lipids to produce an energy source = ketones
- total lack of insulin can create dangerous and life threatening levels of ketones and a persistent high blood glucose level can lead to complications affecting multiple tissues and organ systems
Types of diabetes
The American Diabetes Association (ADA) classifies diabetes into 4 general categories:
- Type 1 diabetes (autoimmune)
- Type 2 diabetes (risk factors that are non-modifiable like age, ethnicity, and family history and modificable like unhealthy diet, obesity, and lack of physical exercise)
- Gestational diabetes mellitus (GDM) (during pregnancy)
- specific types of diabetes due to other causes (rare single gene mutation)
Type 1 diabetes
- your body does not make insulin
- a condition of complete or absolute insulin deficiency
- autoimmune beta cell destruction that requires insulin replacement
- can develop at any age
- in adults = type 1 diabetes accounts for 5-10% of all diagnosed cases
- it occurs most frequently in children, with just over 18,000 youth newly diagnosed each year
- type 1 symptoms can develop in just a few weeks or months
- once symptoms appear, they can be abruptly severe
- often individuals present in an acutely ill state, many times with a life-threatening condition
Type 1 diabetes diagram (slide 7)
Healthy:
- pancreas procures insulin
- insulin moves glucose to the cells
Diabetic:
- immune cells destroy beta cells in the pancreas that produces insulin
- pancreas cannot produce insulin
- more glucose ends up in the blood
- there is no insulin to transport the glucose to the cells and is just hanging out in the bloodstream
Etiology of type 1 diabetes
- occurs more in kids
- an autoimmune reaction that destroys the insulin-producing beta cells in the pancreas
- genetic susceptibility coupled with other factors
- environmental factors might precipitate the disease
- diet may precipitate the disease
- the relationship between viral infection and type 1 diabetes development is supported by many studies alongside the indication that viruses have the potential to induce beta cells damage and reduce insulin production
Type 2 diabetes
- does produce insulin, but either produces less insulin than it should or it doesn’t know how to use insulin
- a condition where the body does not use insulin properly due to a progressive loss of adequate beta cell insulin secretion
- insulin deficiency = doesn’t make adequate insulin
- insulin resistance = when the body cannot use insulin well
- body needs more insulin to help glucose enter cells and the pancreas makes more insulin at first
- 90-95% of all cases of diabetes
Type 2 diabetes diagram (slide 10)
Normal:
- pancreas produces insulin
- insulin moves glucose to the cells
Diabetic:
- pancreas produces less insulin
- insulin moves less glucose to the cells
- test question ex: if somebody’s pancreas is working and it making insulin, it cannot be type 1 diabetes
Etiology of type 2 diabetes
- insulin resistance and beta cells dysfunction are known to be the major factors associated with type 2 diabetes
- genetics, age, ethnicity, and lifestyle factors such as being overweight or obese and not being physically active
- body fat location and distribution, in particular the extra-abdominal fat, is associated with insulin resistance
- although individuals can develop type 2 diabetes at any point in time, even during childhood, it most often occurs in middle-aged and older adults 45 years or older
- presence of high blood pressure, abnormal cholesterol or triglyceride levels, smoking, and use of certain medicines such as steroids
Difference between type 1 diabetes and type 2 diabetes
Type 1 diabetes:
- body doesn’t make enough insulin
- caused by immune system reaction
- often starts in childhood
- symptoms come on quickly
- treated with insulin injections
Type 2 diabetes:
- body doesn’t respond to insulin
- lifestyle factors and genetics contribute
- more common in middle age
- symptoms develop slowly
- managed with drugs and lifestyle changes
Gestational diabetes
- pregnant women go take a glucose tolerance test and then 2 hours later, get bloodwork to see blood sugar level
- transient in nature
- typically diagnosed in 2nd or 3rd trimester of pregnancy in women that might not have clearly overt diabetes prior to gestational
- it is due to either hormones blocking the action of insulin to the body or when the body is not able to make and use all the insulin in needs during pregnancy leading to insulin resistance
- every year, 2-10% of pregnancies in the U.S. are affected by gestational diabetes
- postpartum, blood sugar levels usually return to normal; however, about 50% of women with gestational diabetes will eventually develop type 2 diabetes
- high blood glucose levels in mother
- brings extra glucose to the baby
- causes baby to put on extra weight (10-12 pounds)
Other specific types of diabetes
- monogenic diabetes = related to a change or defect in a single gene and include neonatal diabetes mellitus (NDM) and maturity-onset diabetes of the young (MODY)
- NDM = a rare condition that occurs in up to 1 in 400,000 infants in the first 6-12 months of life and is often mistaken for type 1 diabetes
- MODY = characterized by onset of hyperglycemia due to impaired insulin secretin at an early age (typically before age 25 and accounts for up to 2% of all cases of diabetes in the United States in people ages 20 and younger
- other specific types of diabetes include diseases of the exocrine pancreas (ex: cystic fibrosis-related diabetes (CFRD) and pancreatitis) and drugs or chemical-induced diabetes (ex: with glucocorticoid use, in the treatment of HIV/AIDS, or after organ transplantation)
Prediabetes
- blood glucose levels within the range of normal to high and meet other diagnostic criteria for diabetes
- individuals in this intermediate zone present with impaired fasting glucose levels (100-125 mg/dL) and impaired glucose tolerance levels (140-199 mg/dL)
- prediabetes is associated with obesity, dyslipidemia (high cholesterol), and hypertension (HTN), and those diagnosed are at an increased risk for diabetes and cardiovascular disease (CVD) in the future
- lifestyle modifications including participation in prevention programs that target increasing physical activity, losing weight, managing stress, problem solving, and eating health can delay or prevent progression to type 2 diabetes
Incidence and prevalence of diabetes in the U.S.
Diabetes:
- 38 million people have diabetes
- 1 in every 10 people
- 1 in 5 people don’t know they have it
Prediabetes:
- 98 million American adults have prediabetes
- more than 1 in 3 have prediabetes
- more than 8 in 10 adults with prediabetes don’t know they have it
Risks of diabetes
- blindness
- kidney failure
- heart disease
- stroke
- loss of toes, feet, or legs
Risk factors for type 2 diabetes
- being overweight
- having a family history
- being physically inactive
- being 45 or older
- when you have too much insulin, you will have low blood glucose = hypoglycemia
Signs and symptoms of diabetes
- hypoglycemia
- hyperglycemia
- diabetic ketoacidosis (DKA)
Hypoglycemia
- low blood sugar
- drops below 70 mg/dL
- need for immediate treatment
Risk factors: - types of diabetes, types of medicines
- not eating enough carbohydrates, skipping or delaying meals, increasing physical activity, drinking too much alcohol without enough food, or being sick
- muscles need glucose to contract
- when people get light headed, give orange juice or something surgery to give glucose
- people with diabetes have constant fluctuation glucose levels
- ways to test blood sugar = prick the ginger and get a drop of blood into the glucometer
Symptoms of hypoglycemia
Mild to moderate:
- shaky or jittery
- irritability, nervousness, or anxiousness
- sweating, chills, or clam mines
- confusion, disorientation, or troubles concentrating
- fast or irregular heartbeat
- dizzy or lightheaded
- hungry
- nausea
- pallor or pale skin
- weakness, low energy, sleepiness, and tired
- coordination problems or clumsiness
- changed behavior or personality
- blurred or impaired vision
Severe:
- unable to eat or drink
- seizures or convulsions (jerky movements)
- unconsciousness
Hyperglycemia
- high blood sugar
- above 125 mg/dL while fasting or 180 mg/dL 1-2 hours after eating
- occurs when the body has too little of insulin or when the body cannot use insulin properly
- if left untreated, hyperglycemia can lead to complications affecting multiple systems and organs producing further impairments associated with diabetes
Hyperglycemia having complications on multiple systems like
- atherosclerosis
- retinopathy glaucoma cataracts
- gum disease
- CVA
- CVD
- hypertension
- nephropathy
- autonomic neuropathy
- peripheral neuropathy
- PAD
- diabetic foot
- peripheral neuropathy
Symptoms of hyperglycemia
- weight loss
- frequent urination
- fatigue
- slow healing
- being thirsty
- blurred vision
- always hungry
- tingling on hands