RET 1025 - Principles of Respiratory Care RET 1025 - Principles of Respiratory Care The course shall familiarize the student with the following: physics and chemistry of oxygen and gas delivery, storage and administration of medical gases, humidity therapy, aerosol therapy, types of aerosol generators, oxygen therapy, basic pulmonary diagnostic testing, bedside patient assessment and chart review, principles and techniques for lung expansion and bronchial hygiene, aspiration of secretions, and basic management of specific lung pathologies. Occupational (A.S. and A.A.S.)