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09 fluids electrolytes
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Art History
Professional
12/30/2017

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Term
DKA dx
-labs
Definition
AG Meta acidosis
Urine Ketones
Glucose > 500 usually
*pseudohypoNa, AKI*
*K elevated initially, but depleted overall*
Term
when to add glucose to DKA regimen?
Definition
If AG acidosis persists, but glucose level <250
-add glucose to I-gtt and allow for further ketone metabolism
Term
AG equation
Definition
Na - (bicarb + chloride)

nrml < 10-15
Term
what is gained/lost @ AG vs non AG acidosis?
Definition
AG = gain of acid AND unmeasured ions

Non AG = gain HCL OR lose NaBicarb
Term
MCC type 4 RTA
Definition
Diabetic Nephropathy -->aldosterone resistance
Term
PPhys of acidosis w/hypoALDOSTERONEism
Definition
1. Dec Aldosterone = Hyper K+
2. K/H exchanger: excrete K+, reab H+
(NON AG MET ACIDOSIS)
Term
associated acid base disorder w/hypokalemia
Definition
met ALKalosis
*K exchanged for H to counter alkalosis*
Term
Acid base dz w/gastric losses
Definition
hypochloremic, hypokalemic, metabolic alkalosis
*w/paradoxical aciduria*
Term
Contraction alkalosis pphys
Definition
loss of fluid/dehydration = relative inc in bicarb
*worsened by hypoK*
Term
Hypertensive forms of metabolic alkalosis
Definition
1. Hyperaldosteronism
-Absorb Na, excrete K and H
-HypoK further drives H+ exchange
2. Cushing (high levels of glucocorticoids can have mineralocorti effects)
Term
Diuretic induced contraction alkalosis
-tx
Definition
NS bolus
Acetazolamide fi pt still overloded
Term
PPhys of hypochloremic, hypokalemic, met alkalosis w/aciduria
Definition
1. HCL loss from stomach
2. water loss = renal reabs Na, excretes K ( hypoK)
3. kidney reabs K in exchange for H
Term
hyperPhos
MCC
MC assoc electrolyte abn
Definition
Renal fail
-80% have hypoCa
(other causes = hypo-parathy, tumor lysis synd)
Term
Tx hyperPhos
Definition
Sevelamer chloride
low P diet
HD
Term
PPhys hypOphos
MCCs
Definition
PO4 shift from extra to intracellular
-often w/EtOH abuse-
MCCC = refeeding
Term
hypoPhos
-sxs / consequences
Definition
-failure to wean (dec ATP, weakness)
-inc infxn risk (dec leukocyte chemotaxis)
-AMS
Term
HyperMg MCC
Definition
renal fail + Mg intake
Term
HyperMG sxs
Definition
DECREASED DTR
*heart block if < 10, arrest > 13*
Term
tx hyperMG w/sxs
Definition
best = give calcium (competitive antag)
-diurese, dialysis
Term
HypoMG MCC
sx
Definition
MCC sxsymptomatic: diuretics > EtOH, malnutrition
*majority are asympt*
Term
Hypocalcemia
-MCC
-first sxs
Definition
MCC hx thyroid surg
1st sx = perioral tinglging
Term
albumin and Ca levels
Definition
for every dec in albumin by 1 g, Ca dec 0.8
Term
electrolyte abn causing DTR changes
Definition
HYPER-mg and Ca= dec DTR

HypoCa = hyper-reflexia
Term
MCC hyperCa
Definition
hyperparathyroidism
-MC adenoma
Term
MC malig cause hyperCA
Definition
lung Ca
Brast CA
*Tied for #1*
Term
MCC hypercalcemic crisis
Definition
Hx primary hyperparathyroidism, now undergoing another procedure
Term
Hyper Ca crisis
-tx
Definition
1. NS @200-300/hr (NO LR)
2. Lasix (NO THIAZIDES)
3. HD
4. Malig: bisphos, calcitonin, glucocorts, Mithramycin
Term
RTA w/hyperK?
Definition
type 4
Term
hypoK EGK
Definition
"t waves disappear"
Term
correction rate for hypernatremia
Definition
0.7 meq/L/hr
Term
Free water deficit equation
Definition
0.6 x Weight x [(Na/140) - 1]
Term
HypoNa correction rate
Definition
max 0.5 mEq/L/hr
*avoid central pontine myelinosos*
Term
HypoNA treatment algorithm
Definition
1. water restrict
2. diuresis
3. Hypertonic saline if severe sx
Term
effect on Na levels of hypertonic saline
Definition
3% hypertonic saline has 513 meq NaCl
*1L = 10 meq increase in 70 kg man*
Term
Causes of pseudohypoNa
Definition
hyperglycemia
hyperlipidemia
Term
generally..when to use NS vs LR for initial resusc
Definition
sweat, gastric = NS

panc/biliary/SB, colon = LR
Term
421 rule
Definition
*cc/kg/hr*
4 for the first 10 kg
2 for the 2nd 10 kg
1 for each kg after
Term
amount of insensible daily losses?
Definition
10 cc/kg/day
*75% sweat, 25% resp. Hypotonic*
Term
Logic for glucose containing fluids
Definition
5%Dextrose stimulates insulin release
-inc glucose/aa uptake ==>protein synth
-prevent catabolism
Term
amount of daily output from..
1. stomach
2. panc
3. biliary
Definition
1. 1-2L (HCL loss)
2. 1/2 to 1L (bicarb loss)
3. 1/2 to 1L (bicarb loss)
Term
electrolyte losses with SB fluid loss (fistula)
Definition
Bicarb, K loss
Term
lyte lost w/diarrhea
Definition
K+
Term
amount of sweat loss per day
Definition
300-500 cc
-hypotonic
Term
energy provided by glucose containing fluids
Definition
D5 1/2 NS @ 125/hr
= 150 gm glucose
=525 kcal/day
Term
TBW
-% of total weight?
-location
Definition
2/3 total weight = water
-2/3 water = intra-cellular
Term
main determinant of ONCOTIC pressure
Definition
protein
Term
Main determinant of OSMOTIC pressure
Definition
Na
Term
Lyte composition of NS types
Definition
1. NS: Na/Cl: 154
2. 1/2 NS (0.45%): NaCL 77
3. 3% NS: NaCl 513
Term
Lyte composition of LR
Definition
Na 130
K 4
Ca 2.7
Cl 109
Lactate 28
Term
plasma OSM equation
-nrml = ?
Definition
(2 x Na) + (glucose/18) + (BUN/2.8)

-nrml = 290 +/- 10
Term
Normal daily K and Na requirements
Definition
K: 0.5-1 meq/kg/day

Na: 1-2 meq/kg/day
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