CPAP machines are considered the "gold standard" for treatment of obstructive sleep apnea, sleep disordered breathing, and snoring. CPAP is an acronym for continuous positive airway pressure. It works by filtering out room and delivering pressurized air that keeps your airway open during sleep. Heated humidifiers are available and recommended to prevent dryness that can be caused by direct pressure. CPAP machines are available in standard and auto adjusting models.