Effects on Respiratory Patterns and Patient-ventilator Synchrony Using Pressure Support Ventilation

Effects on Respiratory Patterns and Patient-ventilator Synchrony in Different Ventilator Using Pressure Support Ventilation

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

Inclusion Criteria:

ARDS,COPD and Postoperative patient

Exclusion Criteria:

variety of reasons can not be placed next to the bed by the nasal EAdi catheter