Card Set Information
ABSITE FEN fluid electrolytes nutrition Swedish
ABSITE Questions based on Fiser
Organize the following in order of HIGHEST total body water to LOWEST: woman, baby, man, body builder, fat woman
Muscle and babies have a lot of water, fat doesnt:
2. Body builder
4. Fat woman
Roughly, what percentage of body weight is water?
First sign of volume overload?
Composition of normal saline (in mEq of Na and Cl)
Na 154 mEq
Cl 154 mEq
Composition of LR (name all 5 electrolytes and their mEq in 1 L)
Similar to body fluid composition (except for Ca)
Na 130 mEq
K 4 mEq
Ca 3 mEq
Cl 109 mEq
lactate/HCO3 28 mEq
What happens to the lactate in LR once it is infused?
Turns into lactate.
Formula for plasma osmolarity and the normal values
(2xNa) + (glucose/18) + (BUN/2.8)
Amount of fluid loss in an open operation:
~1 L per hour
What are insensible fluid losses for an average person (in cc/kg/day)? What is the composition of these fluid losses?
10 cc/kg/day all free water
GI fluid secretion (in L/day):
: 1-2 L/d
: .5-1 L/d
: .5-1 L/d
: .5-1 L/d
Daily Na+ requirement:
Daily K+ requirement:
Daily Na+ requirement
: 2 mEq/kg/d
Daily K+ requirement
: 1 mEq/kg/d
Acronym for treatment of hyperkalemia:
DC BIG K
Dialysis if refractory to the following:
Insulin with Glucoe
Maximum rate at which you can correct hyponatremia?
Formula for TBW:
TBW = 0.6 x weight in Kg (duh!)
What is pseudohyponatremia? What are 2 causes?
pseudohyponatremia results when excessive osmoles interfere with testing of serum Na concentration. Two causes:
1 - Hyperglycemia (i.e. DKA)
2 - Hyperlipidemia (as in pancreatitis)
Formula for FeNa?
Pee nacr over blood nacr:
(urine na/ urine cr)/(serum na/serum cr)
How many grams of dextrose in D10W? How many Kcal?
D10 = 10 g/100 cc =
100 g x 3.4 kcal/g =
in 1 liter D10W
Effect of loop diuretics on CALCIUM:
Effect of thiazide diuretics on CALCIUM:
↑hiazides increase Ca
Treatment of hypercalcemia:
NS at ~200 cc/h (patients are volume down)
Lasix (loops lower!)
Acronym for treatment of hypercalcemia caused by malignancy:
D/C M Ad calcium:
-Dialysis if the folowing don't work:
Treatment of hypocalcemia:
Replace magnesium, calcium
Most common malignancy to cause hypercalcemia:
Anion Gap formula:
AG = Na - (HCO3
Causes of anion gap acidosis (acronym)
Typical, surgical cause of normal AG acidosis:
High output ileostomy
: loss of Na/HCO3
: Excessive ressucitation with NaCl
Describe the metabolic derrangement seen with excessive NGT fluid losses (also seen in pyloric stenosis...) Explain why this occurs:
Hypochloremic, hypokalemic metabolic alkalosis:
Loss of HCl from GI causes alkalosis and low Cl
Loss of volume>reabsorb Na instead of K>low K
Low K+>try to reabsorb K, excrete H+>paradoxical aciduria
What is tumor lysis syndrome? What metabolic derrangement results? What is the treatment?
Tumor lysis>purines/pyrimidines> ↑ PO4
, ↑uric acid, ↓ Ca
. This can increase BUN/Cr, cause EKG changes.
: bolus with NS, allopurinol (decreased uric acid), diuretics (↑hiazides!), alkalinize pee