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56 Cards in this Set
- Front
- Back
Action of insulin
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inhibits glycogenolysis and gluoneogenesis
increases glucose transport into muscle increases glycolysis in fat and muscle stimulates glycogen synthesis |
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factors that stimulate the release of insulin?
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glucose, mannose, sulfonylurea
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factors that amplify glucose induced insulin release?
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GLP-1, GIP, cholecystokinin, secretin, beta adrenergic stim
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inhibitors of insulin release?
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alpha adrenergics, somatostatins
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counter regulatory hormones?
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epi and norepi, released during sustained exercise. They stimulate hepatic glucose production and cause lipolysis to get FFAs to supply muscle with fuel
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can short term exogenous insulin be turned off?
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no, increases in temp and blood flow cause its release from skin
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food considerations when exercising and you a Diabetic?
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It is important to eat pre-wod. Slow releasing carbs are preferential for post workout meal. If possible consider food during wod
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what metabolic pathways must be coordinated after eating a meal?
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secrete adequate insulin, prevent rapid absorption of glucose, suppress hepatic glucose, insulin mediated muscle glucose absorption
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whats the dysfunction in DM?
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continued hepatic glucose production even when insulin is high, muscles are resistant to insulin effects, decreased insulin secretion for high glucose levels
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3 p's of dm?
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polyuria, polydypsia, polyphagia
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clinical presentation of someone with DM?
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skin ulcers/breaksdown, retinopathy, charcot foot, acanthosis nigricans, enlarged liver, obesity
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Type 1 DM?
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beta cells of pancreas are destroyed
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Type 2 DM?
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characterized by hyperglycemia, varying degrees of insulin deficiency/decreased secretion, insulin resistance
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Endocrine disorders associated with DM?
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increases in growth hormones, catacholamines, glucocorticoids, glucagon, somatostatin, hyperthyroid
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secondary causes of DM?
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thiazides (hypokalemia), steriods, PCP, B-cell injury
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syndrome x?
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metabolic syndrome characterized by abdominal obesity >40 in waist for men, triglycerides: > 150, HDL: < 40, BP >130/85, FBS >100
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How is vit D related to DM?
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as insulin goes down, DM goes up. 200% increase in ppl at high latitudes
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Normal FBS and OGTT?
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<100
<140 (2 hrs) |
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pre-diabetic FBS and OGTT?
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100-125
140-199 |
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dx of dm is based on what 3 criteria?
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FBG: >126
OGTT: >200 after 1hr, >140 after 2 random glucose: >200 4th can be HgA1C: >6.9 |
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lab difference between type 1 and 2?
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???
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initial management for DM?
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educate, DM control, CV risk factors
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non-pharm DM therapy?
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diet, surgical therapy, exercise, intense lifestyle mod, psycho intervention
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who do give insulin to?
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type 1 diabetics, type 2 with fasting glucose of >280, gestational DM, as beta cell function declines
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Choice of insulin?
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if combined with orals use long acting only
if only insulin than you can combine long acting with short injections |
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timing of insulin?
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give long acting (glargine, detemir) and NPH at bed time, usually only once a day unless no improvement.
Give shorts (lispro, aspart) at meal times |
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insulin side effects?
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hypoglycemia
hyperglycemia |
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Symogii phenomenon?
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AM hyperglycemia after too much insulin
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Dawn phenomenon?
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AM hyperglycemia due to too little insulin and elevated growth hormone
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Non insulin injectables?
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GLP-1 agonist: exanatide, liraglutide: stimulates insulin secretion decreasing fasting and post prandial gluc. good for type 2
pramlintide acetate: amylin analogue that slows gastric emptying and regulates glucagon. type 1 and 2 |
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use insulin first for?
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poorly controlled DM A1C>10, FBS >250, random>300
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MOA of metformin?
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works in the presence of insulin, decreases hepatic glucose, increases glucose use,
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Positives of metformin?
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promotes weight reduction
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contraindications of metformin?
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renal failure, liver failure, heart failure, alcohol abuse, pregnancy
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drug interactions with metformin?
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cimetadine, stop 24hrs before dye use
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sulfonylurea?
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glimepiride, glipizide, glyburide
Action: stimulates beta cells which enhances insulin secretion |
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adverse effects of sulfonylurea?
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weight gain, pancreas burnout, hypoglycemia, skin rash, nausea,
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Alpha-glucosidase inhibitors?
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block enzymes that metabolize starches in the intestines, less effective with low carb diet.
cannot cause hypoglycemia alone, no weight gain |
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action of meglitinides?
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stimulate insulin release when glucose is present
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adverse effects of meglitinide?
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hypoglycemia if taken without meal, meal has to have carbs, weight gain, nausea, back pain, not for use in liver dz and pregnancy
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Action of TZD or glitazones?
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increases insulin sensitivity in adipose, muscle and liver tissue to increase glucose utilization and decrease glucose production
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positives of TZD?
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no hypoglycemia, safe with renal failure, may have anti-inflammatory/anti-thrombotic effects
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Adverse effects of TZD?
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edema, weight gain, contraindicated in liver dz and heart failure
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Is TZD first line therapy?
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no
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incretin mimetics?
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GLP-1 receptor agonist: stimulates release of insulin (exenatide)
DDP-4 inhibitors: which stops the break down of GLP-1 (liptin). also inhibit release of glucose from liver |
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advantage of incretin therapy?
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no weight gain
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Adverse effects of DDP-4?
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URT infx, sore throat, headache, inflammation of pancreas
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Initial medical therapy for DM?
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1. Metformin 2. Sulfonylurea w/ lifestyle changes 3. pt with renal failure/hypoglyc try TZD first. 4. Incretin therapy if non of the above work
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besides the previous meds what other meds might you admin?
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ACE/ARB for HTN or proteinuria, statins, routine eye and foot exams
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target HgA1C?
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<7
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50% of pt that were well controlled on a single drug will need ___ in 3 yrs?
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dual therapy
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DM complications?
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DKA, osmotic diuresis, anorexia, kussmaul breathing, low K, low PO4, low Na
Tx: hydration, insulin, K, and PO4 Coma: profound dehydration, mental status changes |
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3 types of fasting hypoglycemia?
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ENdocrine, hepatic, gluconeogentic substrate defects (preg, CRF, malnutrition)
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2 causes of endocrine fasting hypoglycemia?
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fasting: increased insuline levels
deficiency of anti-insulin hormones: addisons, hypopit |
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fasting hypoglycemia without hyperinsulinemia?
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liver damage, renal failure, sepsis, ethanol ingestion, cortisol, growth hormone low
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nonfasting hypoglycemia?
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post gastrectomy
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