This book provides a unique, detailed, and cutting-edge guide to obstructive sleep apnea (OSA) and the epiglottis. It discusses in detail epiglottis collapse both as relevant for diagnosis (e.g., sleep studies, drug induced sleep endoscopy, imaging and sound analysis) and treatment of OSA.In addition to general information on OSA, the chapters explore the role of the epiglottis in evolution, swallowing function, pathophysiology and surgical anatomy. The central chapters deal with patient selection, diagnosis, indications, and contraindications. The last sections investigate non-surgical treatments, surgical techniques, their results, possible failures, and complications. A conclusive chapter discusses research and future perspectives. The volume offers a large number of high-quality photos and illustrations, and an extensive collection of educational videos that highlight all steps of the surgical procedures.The book will appeal to all caregivers working in the field of diagnosis and treatment of obstructive sleep apnea, in particular otolaryngologists, pulmonologists, neurologists, sleep doctors, maxillofacial surgeons, anesthetists, and also the personnel working in sleep labs, general nurses and scrub nurses, physician assistants, and sleep technicians.