Diabetes Pathobreeze Flashcards
(62 cards)
What is the primary job of the beta cells?
Endocrine Function.
Secretes insulin. This decreases blood sugar.
What is the primary job of the alpha cells?
Endocrine Function.
These cells monitor for low blood sugar. In the presence of low blood sugar these cells releases Glucagon which acts on the liver to release glycogen. This increases blood sugar.
Study Tip: Glucagon- “Glucose-Be-Gone” acts on the liver to release glycogen stores in the liver.
What is the primary job of the Delta cells?
Exocrine Function.
Somatostatin. Stops glucagon and growth hormone secretion. This decreases blood sugar.
The pancreas has both endocrine and exocrine functions what do these words mean?
Endocrine-Gland secretes hormones directly into the bloodstream.
Exocrine- Gland secretes hormones from a duct into an area.
10% of patients have what type of diabetes? What causes this disease?
Insulin-dependent diabetes mellitus
Juvenile Diabetes > Found in children.
- Genetic link: Chromosome 6HLA region
- Found in the presence of islet cell autoantibodies (ICA) destructing itself.
Caused by a virus attacking the genetic chromosome
80-90% of patients have what type of diabetes? What causes this disease?
Non-insulin-dependent diabetes mellitus
- genetic predisposition family history or Hispanics and Native Americans
- obesity (High Risk)
The Beta cells do not produce insulin.
This is an autoimmune injury to the islet of langerhans.
80 to 90% of beta cells are destroyed before the hyperglycemia occurs.
Confusion occurs because of no feedback mechanism.
Alpha cells produce an excess of Glucagon. Increases Blood Sugar
Beta cells do not produce Insulin.
Not able to use sugar to feed the cells. This occurs during what type of Diabetes?
Diabetes Mellitus Type 1
Polyuria Polydipsia Polyphagia Weight loss Hyperglycemia These are the signs and symptoms of what type of diabetes?
Diabetes Mellitus Type 1
(The three P’s)
Study Tip: Elevated blood sugar the sugar acts like an increased osmotic diuretic. It pulls water into the vascular space causing it to be excreted. This causes the patient to urinate a lot and they will be thirsty. As the blood sugar increases it gets thicker. The cells will not receive any sugar which will cause the brain to think the patient is starving. This will cause a patient to eat and drink normally but have increased urination, thirst, and weight loss.
Increase metabolism of fats and proteins PH drops Acetone breath Diabetic coma This is what complications related to Diabetes Mellitus?
Diabetic Ketoacidosis (Hyperglycemia)
Study Tip: The patient has NO insulin so the patient starts to burn other sources for energy (Ex. Protein and Fat) Fat metabolism creates a by-product of ketones and ACID. The patient will be acidic which decreases pH. The patient will breathe acetone because it is a by-product of fat metabolism and blowing off Co2 to compensate because of acidosis that develops because of utilization of fat for energy. If this is not corrected this patient can go into a coma.
Monitoring blood sugar.
Insulin replacement.
This is the treatment for what complication related to Diabetes Mellitus?
Diabetic Ketoacidosis
Hyperglycemia
Non-insulin-dependent diabetes mellitus. Insulin resistance in 60 to 80%.
Obesity
These are indications that your patient might have what type of diabetes?
Diabetes Mellitus Type 2
Patients are not secreting enough insulin. The cellular receptor sites are not recognizing the insulin the the blood stream. The patients have developed insulin resistance caused by bad carbohydrate habits including eating a lot of simple sugars. The body feels obligated to store the extra carbs and calories in the case the body needs it later. These are the beginning symptoms of ____________ will include a thin layer of fat/obesity that develops on the patient. This triggers diabetes to develop in these patients.
Diabetes Mellitus Type 2
- Levels of insulin maybe increased early in the course of the disease Why?
- Insulin Resistance Why?
- Decreased beta cell responsiveness to high blood sugar. Why?
- Decreased in beta cell mass/size Why?
- Pancreatic fibrosis occurs in 33-66% of individuals. Why?
- Loss of beta cell function. Why?
These are pathophysiological causes of what type of Diabetes Mellitus?
- R/T genetic predisposition.
- R/T increased insulin in the presence of high sugar results in Hyperinsulinism.
- R/T increased sugar in the blood decreases insulin-cell receptor sensitivity. Insulin is NOT able to open the door to the cell so that the sugar can get in to decrease blood sugar.
- R/T atrophy of the pancreas.
- R/T decreased production of insulin.
- R/T the fact that there is so much Insulin the the blood doing nothing that the pancreas stops making it.
Diabetes Mellitus Type 2
Slow development of signs and symptoms:
Obesity - causes Hyperlipidemia
Hyperlipidemia -causes atherosclerosis
Infections - caused by high blood sugar which decreases immune function
Visual changes
Paresthesias -decreased feeling in fingers/toes
Fatigue tired
These are the signs and symptoms of what type of diabetes mellitus?
Diabetes Mellitus Type 2
Study Tip: Can be mistaken for old age.
Optometrist can find the Diabetes before the Dr.
Insulin - Why?
Exercise - Why?
This is the treatment for what type of diabetes mellitus?
- Because the patient doesn’t make any of their own insulin. Last Resort Treatment.
- Exercise encourages activation of insulin receptor sites on the cell. Losing weight can correct the diabetes.
Diabetes Mellitus Type 2
Glucose intolerance in pregnancy.
Monitoring and treatment during pregnancy to prevent fetal complications.
These are interventions that are implemented during what type of diabetes?
Gestational diabetes
Pregnancy increases metabolism and need for sugar. Doctors will order glucose tolerance testing early in pregnancy to make sure that there is not a problem with high blood sugar.
Insulin shock.
Blood sugar drops to less than 45 to 60.
What diabetic complication does this indicate?
Hypoglycemia
Study Tip: this May occur because they got too much insulin or exercise.
Elevated Blood sugar greater than 200- 300.
What diabetic complication does this indicate?
Hyperglycemia
Study Tip: Some patients with blood sugar of 110-120 are being given insulin to provide coverage. Patients with blood sugar of 150 and higher are going to receive insulin. With patients with a blood sugar over 300 the nurse will call the doctor. Be careful not to over treat and cause hypoglycemia.
Deficiency of insulin causes fat to be utilized for energy which creates acids and ketones.
What diabetic complication does this indicate?
Diabetes Mellitus Type 1
Diabetic Ketoacidosis
Glucose levels greater than 300 - 750 mg/dL
What diabetic complication does this indicate?
Diabetic Ketoacidosis
Diabetes Mellitus Type 1
Study Tip:
The nurse must hydrate the patient and lower the blood sugar.
This is usually seen with diabetes mellitus type 2. This patient will have enough insulin is present to prevent diabetic ketoacidosis.
There is severe dehydration.
What diabetic complication does this indicate?
HHNK
Hyperosmolar
Hyperglycemic
Non-Ketone Spilling
Study Tip: This patient will not have Hyperkalemia because there is no acidosis in the pathology. Can develop hypokalemia because when the blood sugar goes back in the cell the K+ goes with it because it is a intercellular cation.
What is the dawn phenomenon?
In some patients will have a rise in their blood sugar in the early morning which correlates with the rise in cortisol which also peaks in the early morning.
Study Tip: Cortisol has a diurnal release which means that it is secreted two times a day especially if you sleep through the night. The cortisol is released in the morning.
What is the Somogyi Effect?
This is a combination of hypoglycemia at night and hyperglycemia in the morning due to counterregulatory hormones.
Ex. Catecholamines, cortisol, ect.
__________ is the cause of many diabetic complications. This occurs when the blood sugar is not well controlled it elevates and has a reversible attachment of sugars to proteins (ex. Blood vessels and nerve fibers). The end product is ________. The binding of sugar to protein causes damage throughout the body. Tissue injury occurs to both the blood vessels and kidneys. Damage to the endothelial lining of artery. This becomes the precursor for ________ which leads to the fatty streak which becomes arthrosclerosis.
Glycosylation
Long term advanced glycosylated end products (AGE)
Lipid Oxidation