A study was undertaken to compare CPAP/IMV systems shown to be in common use in the U.K. The most frequently used system (Servo 900B) has characteristics which are likely to increase the work of breathing. Recommendations are made regarding the theoretically most acceptable systems.

All since 1951, it is now a weekly with 48 issues per year.

Study Background: Low patient adherence to nasal Continuous Positive Airway Pressure (CPAP) limits treatment effectiveness. A wide variety of CPAP adherence intervention studies have been performed to date, with many showing some improvement in CPAP adherence. Better understanding of the theoretical foundations, specific behavioral change techniques, and modes of intervention delivery can help ...

Treatment of obstructive sleep apnea with nasal continuous positive airway pressure mandates simultaneous increases of both inspiratory and expiratory positive airway pressures to eliminate apneas as well as nonapneic oxyhemoglobin desaturation events. We hypothesized that the forces acting to collapse the upper airway during inspiration and expiration are of different magnitudes and that obstr...