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Evaluating the Patient-Ventilator Synchrony During Mechanical Ventilation in Patients With Acute Lung Injury

This study has been completed.
Information provided by (Responsible Party):
University of Chicago Identifier:
First received: January 17, 2012
Last updated: December 2, 2014
Last verified: December 2014
The overall purpose to the study is to prospectively study how often patients with and without acute lung injury (ALI) have patient-ventilator asynchrony demonstrated as stacked breaths. The investigators seek to describe the quantity of stacked breaths by continuously recording flow, volume, and pressure waveforms routinely displayed on the vent. The investigators also seek to describe how primary ICU teams manage asynchrony documenting interventions of sedation or vent manipulation and what modality is most successful.

Mechanically Ventilated ICU Patients

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective

Resource links provided by NLM:

Further study details as provided by University of Chicago:

Primary Outcome Measures:
  • double stacks [ Time Frame: number per minute over 5 minutes ]
    ventilator waveform recording

Secondary Outcome Measures:
  • level of sedation [ Time Frame: baseline ]
    Richmond Agitation Sedation Score

  • mode of ventilation [ Time Frame: 30min ]
    ventilator adjustment

Enrollment: 30
Study Start Date: July 2011
Study Completion Date: December 2013
Primary Completion Date: April 2012 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
adult ICU patients receiving mechanical ventilation

Inclusion Criteria:

age > 18 years intubated and mechanically ventilated diagnosed with acute lung injury (ALI) or requiring mechanical ventilation for reasons other than ALI

Exclusion Criteria:

neurological deficits (acute or chronic) that prevent effective diaphragm activity.

  • Neuromuscular disease affecting the diaphragm
  • Neuromuscular blockade
  Contacts and Locations
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Please refer to this study by its identifier: NCT01541514

United States, Illinois
University of Chicago Medical Center
Chicago, Illinois, United States, 60637
Sponsors and Collaborators
University of Chicago
Principal Investigator: Jesse Hall, MD University of Chicago
  More Information

Responsible Party: University of Chicago Identifier: NCT01541514     History of Changes
Other Study ID Numbers: 11-0172
Study First Received: January 17, 2012
Last Updated: December 2, 2014 processed this record on August 18, 2017