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56 Cards in this Set

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