Now fully updated: the ultimate, grade-boosting case companion to first Aid for the usage step 1enhanced by 400 meticulously illustrated cases in a new single-page format, the fourth edition of first Aid cases for the usage step 1 is an integral part of any student’s uslme step 1 exam prep. Enabling test-takers to make connection between basic science principles and clinical situations, each case contains precise drawings or clinical images with Q&As that drive home main concepts. Chapters are keyed to Tao le's first Aid for the usage step 1, which allows students to simultaneously study cases and master high-yield facts. salient features: 1. Hundreds of instructive cases get students ready to ace the usage step 1 2. New full-color design, with each case self-contained in a single page for easy reference 3. Active recall questions and answers reinforce important concepts 4. A perfect companion to first Aid for the usage step 1, with a similar organization that facilitates review.