Pathophys ch25 Endocrine Flashcards
Hyposecretion
deficit of hormone
Hypersecretion
excessive amounts of hormone
Adenoma
- Benign tumor in the gland - May be secretory - causing excess hormone - May be destructive - causing a deficit of hormone
Target cell involvement in disease?
may become resistant or insensitive to the hormone - creating the effect of a hormone deficit
Diabetes mellitus – What is it?
Disease caused by deficit of insulin secretion or lack of response by cells to insulin
Diabetes mellitus – S&S
- polyuria - polydipsia - polyphagia
- hyperglycemia - glucosuria - ketoacidosis - ketouria
Insulin deficit
results in abnormal carbohydrate - protein - and fat metabolism because the transport of glucose and amino acids into cells is impaired as well as the synthesis of protein and glycogen
Type 1 diabetes affect whom?
Occurs most frequently in children and young adults
Type 1 diabetes – pathophysiology
Insulin deficit results from destruction of cells from an autoimmune reaction
Type 1 diabetes – treatment
Insulin replacement is required
Type 2 diabetes affects whom?
Develops gradually in adults. Obesity and sedentary are factors.
Type 2 diabetes – pathophysiology
Decreased effectiveness of insulin or a relative deficit of insulin
Type 2 diabetes – treatment
Controlled by diet - exercise - oral medication - insulin replacement
Metabolic syndrome
a complex of several conditions marked by obesity - CV changes - and significant insulin resistance due to increased adipose tissue
Gestational diabetes
may develop during pregnancy and disappear after delivery of the child
(Acute complications of diabetes) Hypoglycemia
excess insulin causing a deficit of glucose in the blood
(Acute complications of diabetes) Hypoglycemia
Lack of glucose quickly affects the nervous system
(Acute complications of diabetes) Hypoglycemia
S&S - weakness - confusion - pallor - tremor - may lead to loss of consciousness - seizures - and death
(Acute complications of diabetes) Diabetic ketoacidosis
Insufficient insulin which leads to high blood glucose levels and mobilization of lipids
(Acute complications of diabetes) Diabetic ketoacidosis
S&S - thirst - dry skin - oliguria - acetone breath - nausea - vomiting - and can eventually lead to coma
(Acute complications of diabetes) Hyperosmolar hyperglycemic nonketotic coma
Infection or over indulge in carbohydrate using more insulin than anticipated
(Acute complications of diabetes) Hyperosmolar hyperglycemic nonketotic coma
Hyperglycemia and dehydration develops but sufficient insulin is available to prevent ketoacidosis
(Acute complications of diabetes) Hyperosmolar hyperglycemic nonketotic coma
S&S - neurologic deficits - muscle weakness - difficulty with speech
(Chronic complications of diabetes) Microangiopathy
capillary basement membrane becomes thick and hard - this causes obstruction or rupture of capillaries and small arteries and results in necrosis with loss of function
Retinopathy
the leading cause of blindness
Nephropathy
vascular degeneration in the glomeruli