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Milligrams to Grains (gr)
60 mg = 1 gr
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Micro-
0.000001 one millionth
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Milli-
0.001 one thousandth
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Centi
0.01 one hunderedth
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Kilo-
1.000 one thousand times
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drams to mL
1 dram = 4 mL
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mEq
milliequivalent (electrolytes)
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a with a line over it
before
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aa, or aa with line over it
of each
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ad lib.
as desired, freely
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am or a.m.
morning before noon
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b.i.d. or bid
twice a day
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IVPB
intravenous piggyback
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KVO
keep vein open (a very slow infusion rate)
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n.p.o. NPO
nothing by mouth
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p with line over it
after
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pm, p.m.
evening, before midnight
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p.r.n.
when necessary/required, as needed
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qid, q.i.d.
four times a day
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q.s.
a sufficient amount/as much as needed
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s with line over it
without
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s.o.s. SOS
may be repeated once if necessary
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stat STAT
immediately, at once
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tid t.i.d.
three times a day
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