Pressure Support Ventilation use Expiratory triggering sensitivity(Esense) to transfer inspiration to expiration,the value of Esense is fixed.That may lead to asynchrony between humans and ventilators,making people uncomfortable and prolonging weaning time.Some ventilators have auto cycle function Based on curves of pressure on respiratory patterns,it will make the transforming more synchrony with humans.Our prospective observational study will prove the superiority of the auto cycle function.
From August 31st 2016 to August 31st 2017, all ARDS 、COPD and postoperative patients admitted to the ICUs will be enrolled. The demographic characteristics, diagnosis, formerly medical history, Ventilator indications, Ventilator data, other respiratory treatments, weaning outcome and 28 day mortality will be recorded
Study Type
OBSERVATIONAL
Enrollment
45
patient-ventilator synchrony using PSV mode between different ventilator for 180mins
Time frame: 180mins after the patients involved
Patient Respiratory Patterns during Pressure Support Ventilation for 180mins
Time frame: 180mins
Patient gas exchange during Pressure Support Ventilation for 180mins
Time frame: 180mins
Effects on Respiratory Patterns in different Expiratory triggering sensitivity for 180mins
Time frame: 180mins
work of triggering and respiratory in different Expiratory triggering sensitivity for 180mins
Time frame: 180mins
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