What does CPAP stand for in the context of respiratory therapy?

In the context of respiratory therapy, CPAP stands for Continuous Positive Airway Pressure. This therapeutic modality is primarily used to maintain a constant airway pressure throughout the respiratory cycle, effectively preventing airway collapse, particularly in conditions like obstructive sleep apnea and other forms of respiratory distress.

The device works by delivering a steady stream of air through a mask worn by the patient, keeping the airways open during both inhalation and exhalation. This is critical for improving oxygenation and reducing the work of breathing, making it an essential tool in non-invasive ventilation strategies.

The other choices do not accurately describe the technology or its application in clinical settings. For example, "Controlled Positive Airway Pressure" implies a level of mechanical control not inherent in CPAP's design, which is meant to provide continuous support without altering pressure based on the patient's breathing effort. Similarly, "Continuous Pulmonary Airway Pressure" and "Controlled Pulmonary Airway Pressure" do not reflect the standard terminology used in respiratory therapy, as the term "airway" is typically associated with maintaining patency rather than the broader concept of pulmonary pressure. Thus, the correct definition clearly aligns with the intended use and function of CPAP in respiratory care.