This revised second edition includes 668 MCQs related to critical care medicine with 300+ new to this edition. A few new sections such as imaging, pharma therapy, etc, have been included and the theory paper of 50 questions has been added for practice purposes at the end of book.Emphasis has been attributed to tropical diseases, the respiratory system, sepsis, infection control, neurocritical care, trauma and mechanical ventilation. The answers have been given for MCQs along with explanations at the end of every chapter.