Book excerpt: This practical question and answer book covers topics within the field of neurocritical care, including aspects of neurology, neurosurgery, general critical care, and emergency medicine. The updated second edition, with hundreds of new and revised test items, contains two full length practice exams that mimic the tone and scope of the recently introduced American Board of Psychiatry and Neurology (ABPN) certifying exam in Neurocritical Care, based on approval from the American Board of Medical Specialties (ABMS). At the conclusion of each exam, answer choices, rationale, and references are provided. The book is geared towards critical care fellows, but may also be useful for residents in the fields of neurology, neurosurgery, emergency medicine, and internal medicine.