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28 Cards in this Set
- Front
- Back
DM I or II with increased insulin/C peptide
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DM II
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what are clinical finding that are consistant with DM II
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increased inhilin
increased glucose in plasma NO ketones |
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hwo can hyperinsulinemia be confirmed
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C peptide assay (longer 1/2 life than insulin)
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are ketones associated with DM II
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nope, we have SOME insulin, just enough to inhibit lipolysis and ketone formation
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what does untreated DM I look like
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high ketones
high FFA lw insulin |
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what is the problem
eat drink pee LOTS increased FFA low Na/K HIGH glucagon C peptide is low Ketones high glucose high |
DM I
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how does an insulin deficit affect plasma and urine glucose levels in DM I
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Plasma: increased becuase less GLUT 4 to take glucose into cells, gluconeogenesis als increases plasma glucose levels bc glucagon levels are high
Urine: LOTS of glucse, exceed reabs capacity, so Glucose is lost in urine as acts as osmotic gradient to pull out Na/K and water. Pee LOTS, low Na/K |
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what happens to plasma FFA in DM I
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increased
**no insulin means hormone sensitive lipase goes unregulated. TONS of lipolysis releasing FFA. this is enhanced by glucagon **the presense of insulin inhibits lipolysis |
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how does lack of insulin in DM I affect plasma glucagn
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HIGH!
no insulin so no inhibitin on glucagon **increased lipolysis and gluconeogenesis |
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what happens to ketoens in the plasma nad urine in DM I. this is a result of lack of insulin
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increased FFA
**these are then converted to Ketone bodies (acetoacrtic acid and hydroxybutryic acid) **filtered by kidney adn appear in urine |
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why are ketones present in the plasma and urine in DM I
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there is MASSIVE lipolysis bc of lack in insulin and high glucagn. teh FFA released are converted t ketne bodies that are in plasma and urine
**insulin normally wuld inhibit hormone sensitive lipase form going lipolysis crazy but in DM I we dont have insulin to stop HSL |
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what happens to C peptice in DM I
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decreased, C peptide is a reflectin f plasma levels. in DM I its low
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wht happens to BP in DM I
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decreased and decreases more when you stand
**low BP is secondary to fluid loss (osmotic diuresis from glucose in urine) **decrease in ECF, means as you stand decreased venous return to heart, decreased CO and decreased arterial pressure |
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if yu exercise what happens t FFA with and withut insulin injectins
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withut: increase FFA levels
With insuiln: FFA levels are low |
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what happens to plasma glocose in exercise with and withouth insulin
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Without InsulinL decreases
With Insulin: decreases more |
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what happens to insulin levels during exercise, what happens if we add insulin
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w/o insulin: decreases
with insulin: not as much of a decrease |
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what decreases insulin release in exercise
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catecholamines
**greater intensity of exercise greater drop in insulin, more lipolysis |
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why do we need to account for exersice wehn dosing insulin for DM I
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exercise decreases insulin levels so we would need to give them a little more
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why do we see a decrease in glucose with exercise, why is there an even greater driop when we exercise with insulin given
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exercise increases glucose uptake into the mm
with insulin more glucose is taken up int the tissues and glucose levels drop further **increased demands for glucose in exercising mm |
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why do plasma FFA increase in exercise and decrease with exercise and insulin
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w/o insulin and exersice: increased FFA bc lipolysis is stim
w/insulin the FFA is low bc insulin is antilipolytic |
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how is plasma glucose constant throughot exercise with and w/o glucose infusion
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gucose utilization is the sme as hepatic glucose production
**countergegulatoy hormones on glycogenolysis nad gluconeogenesis **even with extra insulin added the hypoglycemia is stronger than the insuin so glucagon is stil released to make sure we have hepatic glocose production |
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how does the rate of glucose produciton and utilization during exercise compare for men and women
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men have higher rates of hepatic glucose production and tissue utilization
**males make and use more glucose during exercise |
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who has a greater EPI respons to exercise men or women
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men
*8the NE response was hte same |
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what is the effect of exercise on catecholamine release in men and women
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NE: same for both
EPI: more released in men than women |
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how do levels of glucagon release during exercise vary among men nad women
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same
**men did have a higher increment from rest to exercise |
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what happened to the cortisol response in men and women in response to exercise
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same increase and hten a decrease
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so men use more glucose in exercise than women, what hormone mirrors this result
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men also have increased EPI release
**the larger increment in glucagon can also accoudn for the higher amt of glucose men use |
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what are the 2 possible explainations for increased glucose use in men during exercise as compared to women
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1. men also have icnreased EPI release
2. Men have increased glucagon increment **same NE, cortisol, (gucagon), |