The revised, updated Fourth Edition of this handy "pocket book" is the ideal reference to consult when making bedside interpretations of clinical data. Remarkably complete for its small size, the book lists nearly 200 symptoms, physical signs, laboratory test results, and radiologic findings and their differential diagnoses. This edition provides expanded coverage of drugs and HIV-related problems.The book is organized by organ system, with additional chapters on acid-base and electrolyte disorders, infectious diseases, and drugs. Each chapter contains multiple entries, representing symptoms, clinical signs, laboratory tests, radiologic findings, and disease processes. References for further reading follow each entry. This edition's improved page layout and headings facilitate information retrieval.