Continuous positive airway pressure (CPAP) machine
A continuous positive airway pressure (CPAP) machine is primarily used by patients at home for the treatment of obstructive sleep apnea (OSA). When a patient has obstructive sleep apnea, their airway becomes restricted as the patient's muscles relax naturally during sleep. This causes an awakening episode resulting in the muscles stiffening so the person begins breathing again. The CPAP machine stops the airway collapse by delivering a stream of compressed air through a face mask and hose, keeping the airway open under air pressure so that unobstructed breathing becomes possible.
Learn more at the New York Head and Neck Institute.