- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01457898
Non-invasive Mechanical Ventilation After Cardiac Surgery
October 21, 2011 updated by: Alessandra Preisig, Irmandade Santa Casa de Misericórdia de Porto Alegre
Effects of Non-invasive Mechanical Ventilation on Hemodynamics and Gas Exchanges Parameters After Cardiac Surgery in Patients With Relative Hypoxemia
Non-invasive mechanical ventilation (NIV) has been used in hypoxic post-operative cardiac patients but more studies are necessary to clarify its respiratory and hemodynamic effects.
Therefore, the investigators objective was to study its effects in the oxygenation index (PaO2/FiO2) and in hemodynamic variables in this group of patients.
Study Overview
Status
Completed
Intervention / Treatment
Detailed Description
- Postoperative cardiac surgery patients having a Swan-Ganz catheter and showing a PaO2/FiO2 between 150 and 300 (with FIO2 0.31), one hour after extubation, were included.
- Then, the patients were randomized into two groups: control and intervention group. Intervention group used NIV with a bi-level positive airway pressure (an inspiratory pressure to generate a tidal volume of 6ml/kg and an expiratory pressure of 7cmH2O) with a FIO2 0.4. Control group used oxygen by Venturi mask(FIO2 0.4) in order to keep a good oxygenation.
- In both groups measurements were done in basal situation, one and three hours after beginning the treatment and one hour after stop the treatment (FiO2 0.31).
- Variables studied included: PaO2/FiO2, PaO2, PaCO2, heart rate (HR), mean arterial pressure (MAP), pulmonary capillary wedge pressure (PCWP) and cardiac output (CO).
Study Type
Interventional
Enrollment (Actual)
42
Phase
- Not Applicable
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
-
-
Rio Grande do Sul
-
Porto Alegre, Rio Grande do Sul, Brazil, 90020-090
- Santa Casa de Misericordia de Porto Alegre
-
-
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
20 years to 85 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Oxygenation index (PaO2/FiO2)between 150 and 300 one hour after extubation following cardiac surgery.
- Swan-Ganz catheter
Exclusion Criteria:
- Invasive mechanical ventilation more than 24 hours
- Serious obstructive pulmonary chronic disease (FEV1<40%)
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
- Allocation: Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: VPAP II®
VPAP II® Group
|
VPAP group:inspiratory pressure to generate 6ml/kg of weight and expiratory pressure of 7cmH2O plus oxygen therapy (FIO2=40%) during three hours.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Oxygenation index (PaO2/FiO2)
Time Frame: 5 hours
|
5 hours
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Heart rate (HR)
Time Frame: 5 hours
|
5 hours
|
Mean arterial pressure (MAP)
Time Frame: 5 hours
|
5 hours
|
Pulmonary capillary wedge pressure (PCWP)
Time Frame: 5 hours
|
5 hours
|
Cardiac output (CO)
Time Frame: 5 hours
|
5 hours
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Collaborators
Investigators
- Principal Investigator: Alessandra P Werlang, MsC, Federal University of Rio Grande do Sul
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
April 1, 2008
Primary Completion (Actual)
May 1, 2009
Study Completion (Actual)
May 1, 2009
Study Registration Dates
First Submitted
October 19, 2011
First Submitted That Met QC Criteria
October 20, 2011
First Posted (Estimate)
October 24, 2011
Study Record Updates
Last Update Posted (Estimate)
October 25, 2011
Last Update Submitted That Met QC Criteria
October 21, 2011
Last Verified
October 1, 2011
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- 1751/07
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.
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