CPAP MachinesWide selection of CPAP machines available in store Today! Call 713-669-0518 an associate will be able to assist you. CPAP Machines for Sleep Apnea CPAP Machines generate continuous positive airway pressure (CPAP) to treat sleep apnea patients. Sleep apnea occurs when muscles relax during sleep to block the upper airway passages. The positive pressure forces the airway open and keeps it open as long as the pressure is continuous. CPAP devices have adjustable pressure to meet the needs of individual patients. Treating sleep apnea is essential to prevent a multitude of ailments, including snoring, obesity, diabetes mellitus, fatigue, daytime sleepiness, hypertension, heart disease, and intellectual decline. Keeping the airway passages open to allow air to reach the lungs is important to your health. The images below portray normal breathing compared to sleep apnea and the possible illnesses that can result for blocked airways during sleep.