Written for residents and practicing community emergency physicians, this volume on critical care emergencies in the What Do I Do Now: Emergency Medicine series uses a case-based approach to cover both common and unique scenarios in critical care emergencies. Featuring chapters written by critical care and emergency medicine trained physicians, this volume provides a unique perspective on the ongoing management of critical illness with a focus on guideline-based protocol care based on national and local recommendations for common presentations such as pneumonia, acute myocardial infarction, or trauma. This volume reviews frequently-encountered diagnoses, procedures, clinical recommendations, and management problems. Brief summaries included at the end of each chapter supply the practicing clinician a quick point-of-care reference during a shift. Critical Care Emergencies is an engaging collection of thought-provoking cases which provides relevant reading for on-clinical shift trainees and for practicing EM physicians who need a refresher. The volume is also a self-assessment tool that tests the reader's ability to answer the question, "What do I do now?"