The document outlines factors affecting oxygenation, including environmental, lifestyle, and health-related influences, as well as the effects of narcotics and stress. It details common manifestations of altered respiratory and cardiovascular functions, such as hypoxia and decreased cardiac output, and discusses nursing measures to maintain a patent airway and improve patient outcomes. Additionally, it highlights the importance of recognizing emergencies related to these systems and implementing appropriate nursing processes and teaching plans for affected clients.