What is the primary function of a CPAP machine?

The primary function of a CPAP machine is to offer continuous positive airway pressure. This device is designed specifically for individuals suffering from obstructive sleep apnea, a condition where the airway becomes temporarily blocked during sleep, leading to interrupted breathing and reduced oxygen levels. The CPAP machine works by delivering a steady flow of air through a mask, which helps keep the airways open throughout the night. This continuous airflow prevents apneas and hypopneas, allowing for a deeper and more restful sleep.

While other options such as monitoring heart rate or providing oxygen therapy may be important in specific contexts, they do not accurately describe the main role of a CPAP machine. Additionally, sound therapy is unrelated to the function of a CPAP device, which is purely focused on maintaining airway patency rather than addressing sleep quality through auditory means.