Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
glucose released into cidrculation comes from what?
|
1. Glycogenolysis-from liver
2. Gluconeogenesis- *glucose syntehsis de novo from liver and kidney |
|
glucose uptake in postabsorptive & postprandial states
|
Post-absorptive:
-glucose uptake in insulin-independent tissues (brain) Post-prandial: -glucose uptake in insulin-dependent tissues (SkM & adipocytes) -SkM: glucose used to synthesize glycogen or it enters anaerobic glycolytic path -adipocytes: glucose converted to glycerol and used to syn. TG |
|
direct & indirect pathways
|
Direct Pathway:
-hepatic glycogen made directly from ingested glucose from meal load Indirect pathway: -hepatic glycogen made from glucose derived from gluconeogenesis |
|
what are the elecrolyte imbalances in DKA?
why does this occur? |
-intracellular K+ depleted d/t transcellular shifts d/t:
1. acidosis 2. excessive dehydration 3. protein catabolism 4. secondary hyper-ALDO |
|
abnl levels in DKA?
|
low intracellular K
(high/nl plasma K+) ph<7.3 HCO3 < 15 incr BUM |
|
***Tx DKA
|
A. First: normal saline (0.9% NaCl)
*goal=restore vital signs! For first 1-2 hrs: *Adults: 500-1000 ml/hr *Adolescents: 500 ml/m2 per hr B. After 1-2 liters of isotonic fluid, change to hypotonic fluid (0.45% NaCl) [Goljan: b/c you peed out hypotonic fluid [glucose + WATER], so replace with hypotonic fluid) C. When plasma glucose <200, add 5% dextrose to prevent hypoglycemia *insulin administration must continue to overcome insulin resistance of DKA D. Total body K+ stores are depleted (although plasma K may be low, nl, or high) ==>EKG can show: -low voltage T waves -U waves (hypo-K) -peaked T waves (hyper-K) *Replacement of K is guided by plasma levels: K<3 ==>40 mEq/h 3<K<6==>10 K>6 ==>discontinue *only give sodium bicarb if: -initial pH<7.1 -inadequate resp compensation *Insulin--do not stop insulin while pt is acidotic!! -initial dose of regular insulin=0.25 unit/kg -continueous regular insulin IV at 0.1 u/kg/h |
|
does DKA occur in DM 2?
|
rarely
|
|
pH and bicarb levels in "mild DKA"
|
pH>7.3
bicarb>15 |