Nursing Medical Math Abbreviations

ac - before meals pc - after meals daily - every day bid - twice a day tid - three times a day qid - four times a day daily - every day, do not use qd qh - every hour at bedtime - hour of sleep do not use hs qn - every night stat - immediately q2h - every 2 hours q4h - every 4 hours q6h - every 6 hours q8h - every 8 hours q12h - every 12 hours every other day - do not use qod prn - as needed three times a week - do not use tiw biw - twice per week IM - intramuscularly IV - intravenously IVP - intravenous push IVPB - Intravenous piggyback MDI - Metered-dose inhaler NEB - nebulizer NGT or ng - Nasogastric tube In the right eye - do not use OD, oculus dextra In the left eye - do not use OS, oculus siniser in both eyes - do not use OU po - by mouth pr - in the rectum subcutaneously - do not use sc, sq, s.c., or s.q. SL - sublingual, under the tongue S & S - swish and swallow cc - cubic centimeter use mL instead g - gram kg - kilogram L - liter mcg - microgram mEq or meq - milliequivalent mg - miligram mL - mililiter unit - Unit do not use U m - minim dr - dram gr - grain gtt - drop I, i - one