What does CPAP stand for?

Continuous Positive Airway Pressure is the correct term for CPAP. This mode of ventilation delivers a continuous level of pressure to keep the airways open, making it particularly useful in treating conditions such as obstructive sleep apnea and certain types of respiratory failure. By maintaining a constant pressure throughout the breathing cycle, CPAP helps improve oxygenation and reduces the work of breathing.

The other terms suggested in the options do not accurately describe the CPAP mechanism. Cyclic positive airway pressure, controlled positive airway pressure, and constant positive airway pressure do not reflect the continuous nature of the pressure application, which is fundamental to the CPAP approach. Therefore, identifying the term as "continuous" captures the essential benefit of this therapy.