This textbook is intended to offer the healthcare students and providers such as medical students, respiratory and nursing practitioners as well as allied health professionals with fundamentals of respiratory system, assessments and diagnostic procedures in pulmonary medicine. Furthermore, the subsequent chapters of the text, present the most common disorders of respiratory system, each chapter is designed to specify a specific respiratory disorder in a comprehensive format as follows: -Description of each disorder -The pathologic changes of the lungs -The main symptoms for individual conditions -The etiologic factors of disorders -Chest assessment and diagnostic procedures -Treatment and medications -End of chapter review questions This textbook provides subject material on clinical respiratory problems in an effective manner made to order for busy physicians and other health care providers. The discussions for individual topics are short, and selected chapters are accompanied by a commentary that presents supplemental information or an experienced view. The content of the book is based upon the authors years of practice as a respiratory practitioner and hospital based clinical educator in the filled of pulmonary care. As an educator, the author has taken under consideration the magnitude of student needs and learning style. Students are not attracted to busy homework assignments and long lectures regarding information they can obtain through internet. The students also become very impatience with boring textbooks having no user-friendly and comprehensible applications. They become more involved and retain information that are embedded in experiential learning and connected to personal experience. The degree to which the content of the text is relevant, practical, and applicable to the real situation is a critical issue. Students of healthcare are willing to invest time and effort into textbooks that help them accomplish their goal. Information that are applicable and concise presented in a practical application framework are well acknowledged by the students. Students in the medical field of respiratory education desire to understand what is the disorder, what are the symptoms, what causes the condition and how to diagnose and treat it. This textbook is designed to aid student through critical thinking, experiential learning method that links the classroom to the real world.