ThirdEdition DRUG CALCULATIONS FOR NURSES A STEP-BY-STEP APPROACH This page intentionally left blank Third Edition DRUG CALCULATIONS FOR NURSES - - A STEP BY STEP APPROACH ROBERT LAPHAM BPharm Clin Dip Pharm MRPharmS Clinical Pharmacist, Sunderland Royal Hospital, City Hospitals Sunderland NHS Trust, UK ( ) HEATHER AGAR RGN BSC HONS Rheumatology Specialist Nurse, Northumbria Healthcare NHS Trust, UK FirstpublishedinGreatBritainin1995byArnold Secondedition2003 Thisthirdeditionpublishedin2009by Ho