Changes of Weaning Parameter in Weaning Failure Patient After Tracheostomy as a Predictor of Subsequent Weaning

Weaning Failure Clinical Trial

Official title: Changes of Weaning Parameter in Weaning Failure Patient After Tracheostomy as a Predictor of Subsequent Weaning

Status Recruiting

Clinical Trial Summary

Weaning from mechanical ventilator is an essential element in the care of critically ill intubated patients receiving mechanical ventilation. It covers the entire process of liberating the patient from mechanical support and from endotracheal tube.

The process of weaning involves two-step strategies: 1. Assessment of readiness for weaning, including physiological measurement, such as maximum inspiratory pressure, tidal volume, respiratory rate and etc. 2. Spontaneous breathing trial.

Tracheostomy has become an increasingly common intervention in ICUs, especially for patients with prolonged mechanical ventilator support.

Tracheostomy may reduce work of breathing by improving some aspects of pulmonary mechanics, such as reducing dead space and decreasing airway resistance, but to date, there is no evidence that this is linked to reduction in weaning time or length of stay.

The investigators believe such improvement in pulmonary mechanic, which may reflect in the weaning parameter that respiratory therapist measured before weaning program, may be different from that measured before tracheostomy creation.

The investigators therefore hypothesized that the improvement in pulmonary mechanic for patients with weaning failure after tracheostomy may reflect on weaning parameters, and that this improvement may be able to predict the subsequent successful weaning from mechanical ventilator support.

Hereby the investigators perform a prospective single-center study to investigate the changes of weaning parameters in difficult weaning patients after tracheostomy as a predictor of subsequent successful weaning.

Clinical Trial Description

Weaning from mechanical ventilator is an essential element in the care of critically ill intubated patients receiving mechanical ventilation. It covers the entire process of liberating the patient from mechanical support and from endotracheal tube1. The process of weaning involves two-step strategies: 1. Assessment of readiness for weaning, including physiological measurement, such as maximum inspiratory pressure, tidal volume, respiratory rate and etc. 2. Spontaneous breathing trial. The incidence of successful weaning is estimated around 68.8%.

Despite there is no consensus on the optimal timing of tracheostomy, patients with prolonged trans-laryngeal intubation are finally succumbed to tracheostomy, as prolonged trans-laryngeal intubation causes tissue trauma, promotes bacterial translocation and infection, making tracheostomy an increasingly common intervention in ICUs. Meanwhile, tracheostomy may reduce work of breathing by improving some aspects of pulmonary mechanics, such as reducing dead space and decreasing airway resistance, but to date, there is no evidence that this is linked to reduction in weaning time or length of stay.

Ｗe believe such improvement in pulmonary mechanics, which may reflect in the weaning parameters that respiratory therapist measured before weaning program, may be different after tracheostomy creation, especially in those patient with weaning failure. Ｗe therefore hypothesized that there may be an improvement in pulmonary mechanic for patients with weaning failure after tracheostomy, and that this improvement may be able to predict the subsequent successful weaning from mechanical ventilator support. Hereby the investigators perform a prospective single-center study to investigate the changes of weaning parameters in weaning failure patients after tracheostomy as a predictor of successful weaning. ;

Study Design

Observational Model: Cohort, Time Perspective: Prospective

Related Conditions & MeSH terms

• Weaning Failure

• NCT number: NCT01312142
• Study type: Observational
• Source: National Taiwan University Hospital
• Contact: Jih-Shuin Jerng, MD, PhD
• Phone: 0972651075
• Email: jsjerng@ntu.edu.tw
• Status: Recruiting
• Phase: N/A
• Start date: March 2011
• Completion date: April 2012