Study to Measure the Prevalence of Asynchrony In Mechanically Ventilated Patients (Asynchrony)

January 13, 2013 updated by: University of Cincinnati

Prevalence of Patient Ventilator Asynchrony in Trauma and Surgical Patients

This study will examine the prevalence of patient-ventilator asynchrony and its determinants. Mechanically ventilated trauma patients often experience asynchrony when their pattern of breathing does not match the triggering of a mechanical ventilator.

Asynchrony is thought to be more common in delirious patients, patients with chronic lung disease and those who are heavily sedated. The study will examine the relationship between (1) delirium and sedation and (2) the prevalence of asynchrony in trauma patients.

Study Overview

Status

Completed

Conditions

Detailed Description

This is a prospective observational study to determine the prevalence of patient/ventilator asynchrony in a cohort of trauma and surgical patients. There will be two 20-minute periods of observation. The first will be during the first 24 hours of mechanical ventilation and the second will take place when the patient is being weaned from the ventilator and is triggering half or more of all ventilator breaths.

The study team will use computer-captured waveforms to determine the proportion of all breaths that are asynchronous. This proportion is the primary outcome variable of the study.

The study hypothesis is that the proportion of asynchronous breaths is higher in patients with higher levels of sedation, as measured by the Richmond Agitation-Sedation Scale (RASS) and the Confusion Assessment Methods for the Intensive Care Unit (CAM-ICU). This hypothesis will be tested using repeated measures analysis of variance.

Study Type

Observational

Enrollment (Actual)

36

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Ohio
      • Cincinnati, Ohio, United States, 45267
        • University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients admitted to the Surgical and Neurosurgical Intensive Care Units at University Hospital, Cincinnati, OH, who require mechanical ventilation and are aged 18 years or older.

Description

Inclusion Criteria:

  • Trauma or surgical diagnosis
  • Patients requiring mechanical ventilation

Exclusion Criteria:

  • Patients with no spontaneous breathing efforts due to injury or chemical paralysis
  • Patients with leaks in the patient ventilator system precluding evaluation of waveforms

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Proportion of asynchronous breaths
Time Frame: 20 minutes during first 24 hours on ventilation and 20 minutes during weaning phase
20 minutes during first 24 hours on ventilation and 20 minutes during weaning phase

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Cincinnati

Investigators

  • Principal Investigator: Bryce Robinson, MD, University of Cincinnati

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2009

Primary Completion (Actual)

May 1, 2010

Study Completion (Actual)

April 1, 2011

Study Registration Dates

First Submitted

January 13, 2010

First Submitted That Met QC Criteria

January 14, 2010

First Posted (Estimate)

January 15, 2010

Study Record Updates

Last Update Posted (Estimate)

January 15, 2013

Last Update Submitted That Met QC Criteria

January 13, 2013

Last Verified

January 1, 2013

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • Robinson-2009-01

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Patient/Ventilator Asynchrony

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Mexico

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe