Control system design for a continuous positive airway pressure ventilator

Control system design for a continuous positive airway pressure ventilator

Continuous Positive Airway Pressure (CPAP) ventilation remains a mainstay treatment for obstructive sleep apnea syndrome (OSAS). Good pressure stability and pressure reduction during exhalation are of major importance to ensure clinical efficacy and comfort of CPAP therapy. In this study an experimental CPAP ventilator was constructed using an application-specific CPAP blower/motor assembly and...

Using tracheal pressure to trigger the ventilator and control airway pressure during continuous positive airway pressure decreases work of breathing.

STUDY OBJECTIVE We evaluated the difference in work of breathing (WOB) during spontaneous ventilation with continuous positive airway pressure (CPAP) among three methods of triggering the ventilator: conventional pressure triggering, tracheal pressure triggering, and flow-by triggering. METHODS In an in vitro model of the respiratory system consisting of a bellows (lungs) in a plastic caniste...

Effect of Bubble and Ventilator-derived Continuous Positive Airway Pressure on the Management of Respiratory Distress Syndrome in Premature Neonates

Background: In this study, we aimed to compare ventilator-derived and bubble continuous positive airway pressure (CPAP) in neonates with respiratory distress syndrome admitted to Neonatal Intensive Care Unit of Vali-e-Asr Hospital, Birjand, Iran, in 2014. Methods: This cohort study was conducted among 68 patients assigned into two groups. The neonates in group A (32 infants) were treated with b...

A proximal system for positive end-expiratory pressure (PEEP) and continuous positive airway pressure (CPAP).

A proximal positive end-expiratory pressure (PEEP) and continuous positive airway pressure (CPAP) system was constructed by the simple addition of a venturi T-piece proximal to the exhalation limb of a breathing circuit. The level of PEEP or CPAP was determined by the amount of flow powering the venturi. This system can provide positive pressure in excess of 40 cm H2O without the need for check...

Intraocular Pressure during Continuous Positive Airway Pressure