Pulmonary medicine refers to a medical specialty that is concerned with the diseases affecting the respiratory tract. It falls under the umbrella of internal medicine. Some common diseases treated under this domain are asthma, pneumonia, emphysema, tuberculosis, etc. Pulmonary medicine also provides patients with life support and mechanical ventilation. The diagnosis of pulmonary diseases focuses on hereditary diseases, exposure to toxicants, infectious agents, etc. Some other clinical procedures for detection of diseases are spirometry, bronchoscopy, CT scanning, scintigraphy, etc. Bronchodilators, steroids, antibiotics, leukotriene antagonists are some of the medications that are used in treating respiratory diseases. The topics covered in this extensive book deal with the core aspects of pulmonary medicine. It aims to shed light on some of the unexplored aspects and the recent researches in this field. This book will serve as a reference to a broad spectrum of readers.