The book is a concise and informative text about acid-base disorders. The book begins with very simple mathematics, chemistry, and physiological concepts and smoothly connects these to various aspects of acid-base disturbances and blood gas disorders through many simple-to-understand case-based examples. It covers various important topics such as respiratory acidosis and alkalosis, metabolic acidosis and alkalosis, mixed disorders, arterial blood gas, etc. All chapters end with a simple take-home summary facilitating better understanding and recall value. This book showcases practical text important at all levels of medical education, right from a basic science student to an attending physician/surgeon. Students, interns, residents, fellows, and attending physicians working in a broad range of clinical settings, particularly anesthesiology, surgery, and critical care can find this book helpful.