Extensively covering the ratio and proportion method, Drug Calculations: Ratio and Proportion Problems for Clinical Practice, 10th Edition is known for its realistic practice problems and unique "proof" step in the answer key that lets you double-check your answers to avoid medication errors. This text addresses the current issue of patient safety with respect to accurate drug dosages through the inclusion of QSEN competencies recommendations - and with features such as new Clinical Relevance boxes and Clinical Alerts that call attention to situations in actual practice that have resulted in drug errors. You will get extensive hands-on practice for the NCLEX Exam through the text's calculation problems, critical thinking exercises, worksheets, and assessment tests.