Final Flashcards
(387 cards)
What is the role of glucagon in your body?
increases the amount of glucose in your blood
What is the role of insulin in your body?
decreased the amount of glucose in your blood
Where is insulin produced?
B cells in pancreas
What is the pathophysiology of type 1 DM?
absolute insulin insufficiency: type 1a caused by autoimmune attack on beta cells of pancreas; B cells are not producing insulin
What are the clinical manifestations of type 1 DM?
increased blood glucose due to no insulin
What are the 3 P’s of Type 1 DM?
- polyuria: urination (sugar spills into urine and water follows, increased urine output)
- polydipsia: thirst (body senses hypovolemia, drinking triggers thirst
- polyphagia: hunger (decreased weight due to fluid loss, fat stores broken down, protein broken down; cells need energy)
What is the evaluation for type 1 DM?
- H and P
- ketones and glucose in urine
- blood glucose
- HgA1c above 6.5
What determines diabetes from blood glucose test?
- random sampling: blood glucose > 200 mg/dl with classic s/s
- fasting: blood glucose > 126 mg/dl
- 2 hours post 75-g oral glucose load: blood glucose >200 mg/dl
What are the treatments for type 1 DM?
- insulin therapy
- diet/meal planning
- activity/exercise
- monitoring for complications (acute hyperglycemia, diabetic ketoacidosis, hypoglycemia, chronic changes)
What are the s/s of type 1 DM?
frequent urination, increased thirst, hunger, weakness, weight loss, blurred vision, nausea, slowed healing time, tingling in hands
What are s/s of hypoglycemia?
sweating, pallor, irritability, hunger, lack of coordination, sleepiness
What are the clinical manifestations of hypoglycemia?
TIRED: tachycardia irritability restless excessive hunger diaphoresis, depression
What can cause hypoglycemia?
increase in exercise, too much insulin
What are the causes of diabetic ketoacidosis?
not managing insulin, stress; result of increased lipolysis and conversion to ketone bodies (ketones and proteins)
what are the clinical symptoms of DKA?
metabolic acidosis (adipose -> ketones -> acidic)
What are some clinical manifestations of DKA?
- hyperkalemia (buffer system H+ -> K; Na-K pump has no insulin so increase in K)
- too much H+: breath deeper and faster (Kussman Respirations)
- fruity breath: acetone
Who is most at risk for type 2 DM
non Caucasians and elderly
what are risk factors for type 2 dm
age, sedentary lifestyle, obesity, genetics, metabolic syndrome (pre diabetes: obesity, pre HTN, dyslipidemia)
How does type 2 DM work
resistant to the action of insulin on peripheral tissues - requirement for more insulin AND lowered glucose utilization
Evaluation of type 2 DM
- H and P (more subtle)
- glucose in urine
- blood glucose tests
- HbA1C above 6.5
treatment for type 2 dm
lifestyle - diet, exercise, weight loss (improves glucose tolerance)
medications
monitoring complications (chronic changes)
long term consequences of hyperglycemia
eyes, kidneys, cardiovascular, cerebrovascular, neuropathy, peripheral vascular infection
pathophysiology of gestational diabetes
glucose intolerance during pregnancy; thought to occur because placental hormones and weight gain during pregnancy cause insulin resistance and inability to produce the increased amount of insulin needed during pregnancy; glucose tolerance test around 28 weeks
treatment of gestational diabetes
nutritional counseling and exercise; insulin (if needed)