Test 3: fluid and electrolyte Flashcards
potassium level
3.5-5
sodium level
135-145
calcium level
8.5-10
causes of fluid volume excess
CHF (most common) Renal failure Congenital heart defect Over hydration Hormone imbalance Malnutrition
Causes of fluid deficit
Inadequate intake
Hemorrhage
V/D
Massive edema
Types of fluid loss
Gastrointestinal
Insensible
Urinary
Fecal
Body weight daily maintenance formula
100,50,20
body weight hourly maintenance formula
40,20,10
when to give isotonic IV fluids
Shock Trauma Fluid resuscitation Blood loss Dehydration (V/D)
when to give hypotonic IV fluids
DKA
HNS
when to give hypertonic IV fluids
Hyponatermia
Cerebral edema
urine output for normal neonate
2ml/kg/hr
urine output for normal child
1ml/kg/hr
urine output for normal adolescent
0.5ml/kg/hr
what does sever HYPERglycemia do to serum sodium
depresses it
vascular fluid and sodium have what kind of relationship
inverse
what moves passively with sodium
chloride
when will you see cardiac arrhythmia due to potassium
potassium is < 3 or > 7
what causes potassium to shift into the cell (hypo)
Insulin
Epi
Alkalosis
Hypothermia
what causes potassium to shift out of the cell (hyper)
Metabolic acidosis