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.