DM Flashcards
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
hyperglycemia – elevated blood sugar
ketosis – ketones build up because the body can’t get the glucose into the cell (r/t not producing insulin); because the glucose is stuck in the bloodstream (where it cannot be used as an energy source at a cellular level) the body breaks down fat to be used an energy source instead; when fat is broken down, ketones are released; in other words: body goes to fat stores for energy since it cannot use glucose r/t no insulin production
usually abrupt in onset
affects 5 – 10% of diagnosed diabetics
primarily in childhood or adolescence, but can occur at any age
thin and underweight – pt eats a lot trying to get energy, but cannot get it from glucose, so the body burns fat
fatigue and malaise
3 p’s:
Polyuria - ( urine output
Glucosuria – renal threshold is usually 180 (some pt’s have higher thresholds); when sugar gets to a certain level in the bloodstream, it will spill over into the urine; glucose pulls water with it – when glucose is high in the bloodstream it causes an ( in osmolarity (thicker blood) which makes the pt feel thirsty: the more the pt drinks the more the pt urinates
Polydipsia - ( thirst; pt can end up with electrolyte imbalances
Polyphagia - ( hunger; since the body cannot use the glucose trapped in the bloodstream and is burning fat stores instead, the body is constantly trying to refuel itself (making pt feel hungry)
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
hyperglycemia –
elevated blood sugar
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
ketosis –
ketones build up because the body can’t get the glucose into the cell (r/t not producing insulin); because the glucose is stuck in the bloodstream (where it cannot be used as an energy source at a cellular level) the body breaks down fat to be used an energy source instead; when fat is broken down, ketones are released; in other words: body goes to fat stores for energy since it cannot use glucose r/t no insulin production
usually abrupt in onset
affects 5 – 10% of diagnosed diabetics
primarily in childhood or adolescence, but can occur at any age
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
thin and underweight –
pt eats a lot trying to get energy, but cannot get it from glucose, so the body burns fat
-fatigue and malaise
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
3 p’s:
Polyuria -increase urin
Polydipsia -increase thirst
Polyphagia -increase hunger
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
3 p’s: Polyuria -
👆🏿urine output
-Glucosuria – renal threshold is usually 180 (some pt’s have higher thresholds); when sugar gets to a certain level in the bloodstream, it will spill over into the urine; glucose pulls water with it – when glucose is high in the bloodstream it causes an 👆🏿in osmolarity (thicker blood) which makes the pt feel thirsty: the more the pt drinks the more the pt urinates
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
3 p’s: Polydipsia
- 👆🏿thirst; pt can end up with electrolyte imbalances
ENDOCRINE DISORDERS
DIABETES MELLITUS
Characteristics of Type I
3 p’s: Polyphagia -
👆🏿hunger; since the body cannot use the glucose trapped in the bloodstream and is burning fat stores instead, the body is constantly trying to refuel itself (making pt feel hungry)
ENDOCRINE DISORDERS
DIABETES MELLITUS
Definition:
a metabolic disorder characterized by glucose intolerance, a systemic disease caused by an imbalance between insulin supply and demand (supply and demand between glucose [raises BS] and insulin [lowers BS])
Two types:
Type I (insulin dependent diabetes, IDDM, juvenile onset diabetes, brittle diabetes)
ENDOCRINE DISORDERS
DIABETES MELLITUS
Pathophysiology of Type I
- inflammation of islets of Langerhans (the cells within the pancreas)
- beta cells (the islets of Langerhans) are destroyed resulting in ⭐️absolute ⭐️insulin deficiency (no insulin production)
- hyperglycemia occurs when 80 – 90 % of beta cells are destroyed
- honeymoon phase:
ENDOCRINE DISORDERS
DIABETES MELLITUS
Pathophysiology of Type I
honeymoon phase:
happens after diagnosis (up to about 6 mos); pt requires ( amounts or no insulin, but then the last of the beta cells are destroyed causing all insulin production to cease
ENDOCRINE DISORDERS
DIABETES MELLITUS
Type II
Characteristics
(non-insulin dependent diabetes mellitus, NIDDM, adult onset DM)
- generally slow in onset; insidious (developing so gradually as to be well established before becoming apparent)
- may go undiagnosed without screening
- symptoms may be vague
- 3 p’s when BS is high
- Visual blurring
- Poor wound healing
- Neuropathy- pain in feet
- 85 – 90% of diabetics have Type II, much more common than Type I
- usually diagnosed in middle age (over 30) and elderly, but now occurring a lot in children r/t obesity
- treated with oral agents and/or insulin or diet (for a period of time)wouldn’t die w/o insulin
- insulin using, not insulin dependent; still have a functioning pancreas
non-ketotic – Type II pts usually have enough insulin to prevent the breakdown of fat (ketones are by-product/waste product of that process)- unlike type 1
ENDOCRINE DISORDERS
DIABETES MELLITUS
Pathophysiology of Type II
3 abnormalities:
- insulin resistance
- abnormal insulin production
- hyperinsulinemia - inappropriate gluconeogenesis
ENDOCRINE DISORDERS DIABETES MELLITUS Pathophysiology of Type II 3 abnormalities: insulin resistance =
poor utilization of insulin at the cellular level (insulin is used to move glucose into the cells - insulin is the key that unlocks the cell for movement of glucose out of the blood and into the cell)
dependent on pt’s weight: the more obese the pt is the more insulin resistance
ENDOCRINE DISORDERS
DIABETES MELLITUS -Pathophysiology of Type II
3 abnormalities:
abnormal insulin production
- hyperinsulinemia and decreased insulin production
hyperinsulinemia = high insulin levels in blood occurring in the early stages of the disease; the beta cells of the pancreas aren’t working properly – they are working overtime trying to send out more insulin to make up for the insulin resistance problem;
- decreased insulin production – usually occurs later in the disease – the beta cells quit working r/t being overworked because of the insulin resistance; pt may have been controlled by diet, but will now need oral agents or insulin
ENDOCRINE DISORDERS DIABETES MELLITUS Pathophysiology of Type II 3 abnormalities: inappropriate gluconeogenesis =
production of glucose in the liver; in Type II diabetes mellitus the liver does this inappropriately – even when the body doesn’t need the extra glucose the liver pushes glucose out anyway increase BS levels.
ENDOCRINE DISORDERS
DIABETES MELLITUS
Risk factors of Type II
- familial component -increase risk
- obesity
- Insulin resistance
- race/ethnicity
- polycystic ovarian syndrome
- acanthosis nigricans (brown, hyperpigmented thickening of the skin)
- physical inactivity
ENDOCRINE DISORDERS
DIABETES MELLITUS Risk factors of Type II
familial component –
-not specifically genetic
👆🏿Your chances of developing DM:
ENDOCRINE DISORDERS
DIABETES MELLITUS Risk factors of Type II
obesity =
-BMI (body mass index) of 27 or greater
- Insulin resistance – especially in certain types of obesity such as “truncal” (body is apple shaped due to excess fat accumulated around the trunk of the body); truncal obesity ( the number of available insulin receptors.
- increase risk CVD
- beta cells have impaired ability to release insulin
ENDOCRINE DISORDERS
DIABETES MELLITUS Risk factors of Type II
race/ethnicity –
African Americans, Asian Americans, Native Americans and Hispanics have 👆🏿risk of developing Type II
ENDOCRINE DISORDERS
DIABETES MELLITUS Risk factors of Type II
polycystic ovarian syndrome
– ovarian cysts; strong correlation between the Type II’s insulin resistance and polycystic ovarian syndrome
ENDOCRINE DISORDERS
DIABETES MELLITUS Risk factors of Type II
acanthosis nigricans (brown, hyperpigmented thickening of the skin) –
r/t too much insulin in the bloodstream (hyperinsulinemia); more common in African American and Hispanics; sign of insulin resistance; occurs in skinfolds (neck, knuckles, axilla, etc.) wt loss can prevent
ENDOCRINE DISORDERS
DIABETES MELLITUS -Type II diabetes in children
screening in children:
- diagnosed in increasing numbers in children & adolescents, especially in minority populations
- obesity (BMI > 85th percentile for age & sex or weight > 120% of ideal weight for height)
ENDOCRINE DISORDERS
DIABETES MELLITUS -Type II diabetes in children
-two or more risk factors:
- family history of Type II DM in first or second degree relative
- minority ethnicity
- signs of insulin resistance (acanthosis nigricans; dyslipidemia (high lipid levels: high triglycerides, high LDL; polycystic ovary syndrome)
- onset of puberty – ages 11-14 years of age
ENDOCRINE DISORDERS
DIABETES MELLITUS -Type II diabetes in children
treatment for kids
- includes use of oral agents (only one kind of med is approved for kids at this time and the kids have to be over the age of 10y),
- weight reduction,
- diet
- and exercise
ENDOCRINE DISORDERS
DIABETES MELLITUS -Prediabetes
(Impaired Glucose Tolerance [IGT] or Impaired Fasting Glucose [IFG]/ old term “Borderline Diabetes”)
Definition:
-Fasting (8-12°) glucose > 100 and 140 but