5% dextrose in 1/2 NS? - pg.2 | allnurses

5% dextrose in 1/2 NS? - page 2

I don't understand this. I know of 5DW and 1/2 NS but combining them together? Would this be isotonic, hyper/hypotonic? Can somebody help me figure this out? thanks... Read More

  1. Visit  Esme12 profile page
    #13 1
    there is d5.9%, d5.2% and d5.45%. half-normal saline (0.45% nacl), often with "d5" (5% dextrose), contains 77 meq/l of na and cl and 50 g/l glucose.
    quarter-normal saline (0.22% nacl) has 39 meq/l of na and cl and always contains 5% dextrose for osmolality reasons


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  2. Visit  BSNmom2013 profile page
    #14 1
    Quote from hotshot12345
    I don't understand this. I know of 5DW and 1/2 NS but combining them together? Would this be isotonic, hyper/hypotonic? Can somebody help me figure this out?

    thanks
    - The "best answer" given for your information leaves out one CRUCIAL bit of information. While D5 1/2 NS is hypertonic in the bag, upon intravenous administration it becomes hypotonic- because the body absorbs the glucose (almost immediatelt) leaving only 1/2 NS being absorbed into the vascular space. If this fluid is given inappropriately, it can lead to the swelling and lysis of cells.
    This solution is indicated for patients who are an prolonged NPO status. The 170 calories in a bag of D5W helps with a patient who is NPO- because they have no oral intake.
    Giving this solution and not knowing it is hypotonic on administration can be detrimental to your patient! Water intoxication, ECF osmolarity decreases, hydrostatic pressure increases, and fluids shift into the intracellular space, so all body compartments expand and dilutional electrolyte imbalances occur.
    Hope this is helpful!

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