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31 Cards in this Set
- Front
- Back
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dilution
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use inverse proportions
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aliquot
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used for measurement of solids and liq
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metric sys
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rx primary sys of measure
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fried's rule for infants
dose for infant |
age in months x adult dose / 150
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clarks rule
dose for child |
wgt (lb) x ad / 150
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childs dose based on boody surface area
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bsa in child (m2)x ad / 1.73 m2
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Molarity (M)
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# of moles of solute / dissolved in 1 L of soln
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Normality (N)
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# of equivalents of solute / # of liters of soln
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1 equivalent of acid
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quantity of that acid supplies or donates 1 mole of H ions
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1 equivalent of base
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quantity that furnishes 1 mole of OH ion
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1 equivalent of acid
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reacts with 1 eq of base
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equivalent wgt
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atomic wgt or MW / valence
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molality (m)
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moles of solute dissolved per kg of solvent
# of moles of solute/ # of kg of solvent |
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adv of molality
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based on solvent wgt and avoids prob w/ vol expansion or contraction on addition of solutes
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mole fraction (x)
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ratio of # of moles of 1 component to total moles of a mixture of soln
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milliequivalent (meq)
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unit used to express the conc of electorlyte in soln
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to calculate meq
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- find MW
- calculate eq wt of "KCl" - determine the meq wt w/c is 1/1000 of eq wt - calculate by dimensional analysis & proportion the conc in percentage |
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osmotic pressure
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directly proportional to toal # of particles in soln
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milliosmole (mOsmol)
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unit of measure for osmotic conc
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nonelectrolytes
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1 millimole = 1 milliosmole
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electrolytes
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total # of particles of soln is determined by the # of particle produced in soln and influenced by degree of dissociation
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mOsmol/L
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wt of subs in g/L / MW wgt in g
x # of species x 1000 |
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conc of inc solute
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interaxn between dissolved particles inc -> reduction of actual osmolar values
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isotonic soln
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same osmotic pressure as body fluid
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isoosmotic fluids
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fluids w/ same osmotic pressure
adm to pt's |
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hypotonic soln
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dec osmotic pressure than body fluids
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hypertonic soln
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inc osmotic pressure than body fluids
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freeaing pt depression of body fluids
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-0.52 degree Celsius
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freezing pt of soln
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1.86 degree celsius
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0.9% NaCl
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isotonic fluid
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NaCL equivalent
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represents the amt of NaCl that is equivalent to the amt of particular drug in question
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