This book provides healthcare professionals in Critical Care setting an easy consultation guide to fight against COVID-19. The book is divided into sections: Fundamentals of COVID-19, Pneumological critical care, Neurological manifestations, Cardiovascular manifestations, Renal manifestations, Haemostasis and coagulation, Other multi-organs involvement, Principles of therapy.   Each section includes:            brief pathophysiology of COVID-19 (ventilation, neurological, cardiovascular, etc.);             principles of management (enriched with flowcharts and figures);             principles of therapy;             tips and key messages.   Readers can find the most updated advices on how to face the ongoing pandemic: from principles of conventional oxygen therapy, assisted and invasive mechanical ventilation in critically ill COVID-19 patients to the complications sometimes underestimated.