FluidsandElectrolytes, GENERAL

  1. What is nl plasma osmolality?
    280-295
  2. How do you calculate serum osm?
    (2 x Na) + urea + glucose

    This is a rough equation
  3. Name ineffective osmoles
    EtOH, urea

    They freely cross membrane of cells but do not pull fluids with them
  4. What causes hypertonic ECF?
    • Excessive H20 loss (diarrhea, vomiting, sweating)
    • Insufficient H20 intake (extreme exercise, desert travel, not being able to take PO)
  5. What causes hypotonic ECF?
    • Volume overload due to renal failure or cirrhosis
    • SIADH
  6. Normal saline contains how much of the following?
    mOsm/L
    Glucose
    Na
    Cl
    HCO3
    K
    • mOsm/L: 308
    • Glucose: 0
    • Na: 154
    • Cl: 154
    • HCO3: 0
    • K: 0
  7. 1/2NSS contains what?
    mOsm/L
    Glucose
    Na
    Cl
    HCO3
    K
    • mOsm/L: 154
    • Glucose: 0
    • Na: 77
    • Cl: 77
    • HCO3: 0
    • K: 0
  8. What is a good urine output?
    0.5-1cc/kg/hr is adequate
  9. What do maintenance fluids contain?
    Na, water, glucose, K
  10. Howo do you calculate maintenance fluid?
    4:2:1
  11. Name the chem7 diagram
    Image Upload 2
Author
bigfootedbertha
ID
84366
Card Set
FluidsandElectrolytes, GENERAL
Description
For my upcoming nephrology exam
Updated