Respiratory FailureNCT01663480
To Identify the Proportionality of Respiratory Work Under Different NAVA Level
An observational study of Respiratory Failure, run by Ling Liu at 1 site in China.
Trial summary
The primary purpose of mechanical ventilation is to sufficiently unload the respiratory muscles and maintain adequate ventilation in spontaneously breathing patients. When the mechanical ventilatory assist is synchronized to the patient's inspiratory effort, both the patient and the mechanical ventilator will… Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Respiratory Failure
- How many people
- 12 participants
- Where
- 1 siteChina
- Study dates
- Mar 2011to Dec 2013
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: patient with respiratery failure need mechinical ventilation, and will be tolerance short time loe level support ventilation
Inclusion Criteria:(1) Intubated or tracheostomied patients with ARF due to COPD (10 patients) or other reasons (10 patients) who were undergoing assisted mechanical ventilation, (2) be able to tolerate short time (30 minutes) spontaneous breathing (PEEP≤5cmH2O, without assist), (3) awake and do not need high dose of sedation
Exclusion Criteria:(1) age <18 or >80 years, (2) ready for extubation, (3) history of esophageal varices, (4) gastro-esophageal surgery in the previous 12 months or gastro-esophageal bleeding in the previous 30 days, (5) coagulation disorders (INR ratio>1.5 and APTT>44 s), (6) history of acute central or peripheral nervous system disorder or severe neuromuscular disease, (7) history of leukemia, severe chronic liver or chronic cardiac disease, (8) solid organ transplantation, (9) malignant tumor.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Assessment of Patient-ventilator Breath Contribution (PVBC) During Neurally Adjusted Ventilatory Assist (NAVA) in Patients With Acute Respiratory Failure
The primary purpose of mechanical ventilation is to sufficiently unload the respiratory muscles and maintain adequate ventilation in spontaneously breathing patients. When the mechanical ventilatory assist is synchronized to the patient's inspiratory effort, both the patient and the mechanical ventilator will contribute to the lung-distending pressure, necessary to overcome inspiratory load and generate the tidal volume (Vt). Unfortunately, conventional modes of mechanical ventilation cannot quantify the impact of the ventilatory assist performed by the ventilator and the patient. Inadequate levels of assist are associated with adverse effects such as development of fatigue or patient-ventilator dissynchrony and diaphragm impairment, and over assist also lead to diaphragm atrophy and weaning delay.
The newly introduced neurally adjusted ventilatory assist (NAVA) has made it possible to measure the neural activity of the respiratory centers (expressed by the diaphragm electrical activity, EAdi). EAdi is a validated variable to quantify the neural respiratory drive, little is known about its usefulness to evaluate the contribution of the patient's inspiratory muscle effort relative to that of the mechanical ventilator, which would be of crucial importance to appropriately titrate the level of assist.
During NAVA, the patient's efficiency to transform neural effort (EAdi) into Vt, expressed as neuroventilatory efficiency (NVE), may be a useful predictor for determining the contribution of the patient and the ventilator to generate a breath.
- Conditions
- Respiratory Failure
- Medical subject headings
- Respiratory Insufficiency
What is being measured
The primary outcome is the main question the study is designed to answer.
PVBC index
PVBC2predicts the contribution of the inspiratory muscles versus that of the ventilator during NAVA
Measured: every 3 mins
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Aug 2012 (estimated)
- Study startMar 2011
- Primary completionDec 2013
- Study completionDec 2013
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Respiratory FailureStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 12 participants (actual)
Sponsor and investigators
- Lead sponsor
- Ling Liu
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Ling Liu, Southeast University, China
- Investigators
- Haibo Qiu, Study director, southeast univerity, China
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01663480
- Sponsor's protocol ID
- NAVA3
- Status last verified
- Jul 2014
- First submitted
- 9 Aug 2012
- Last updated
- 29 Jul 2014
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Liu L, Liu S, Xie J, Yang Y, Slutsky AS, Beck J, Sinderby C, Qiu H. Assessment of patient-ventilator breath contribution during neurally adjusted ventilatory assist in patients with acute respiratory failure. Crit Care. 2015 Feb 18;19(1):43. doi: 10.1186/s13054-015-0775-2.
PubMed 25882607
Study at a glance
From the registry record, last updated by the sponsor on 29 Jul 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Assessment of Patient-ventilator Breath Contribution (PVBC) During Neurally Adjusted Ventilatory Assist (NAVA) in Patients With Acute Respiratory Failure
- ClinicalTrials.gov ID
- NCT01663480
- Acronym / sponsor ID
- NAVA3
- Conditions
- Respiratory Failure
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 12 participants (actual)
- Lead sponsor
- Ling LiuUniversity, hospital or other
- Study start
- Mar 2011
- Primary completion
- Dec 2013 (actual)
- Study completion
- Dec 2013 (actual)
- First posted
- 13 Aug 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The primary purpose of mechanical ventilation is to sufficiently unload the respiratory muscles and maintain adequate ventilation in spontaneously breathing patients. When the mechanical ventilatory assist is synchronized to the patient's inspiratory effort, both the patient and the mechanical ventilator will contribute to the lung-distending pressure, necessary to overcome inspiratory load and generate the tidal volume (Vt). Unfortunately, conventional modes of mechanical ventilation cannot quantify the impact of the ventilatory assist performed by the ventilator and the patient. Inadequate levels of assist are associated with adverse effects such as development of fatigue or patient-ventilator dissynchrony and diaphragm impairment, and over assist also lead to diaphragm atrophy and weaning delay.
The newly introduced neurally adjusted ventilatory assist (NAVA) has made it possible to measure the neural activity of the respiratory centers (expressed by the diaphragm electrical activity, EAdi). EAdi is a validated variable to quantify the neural respiratory drive, little is known about its usefulness to evaluate the contribution of the patient's inspiratory muscle effort relative to that of the mechanical ventilator, which would be of crucial importance to appropriately titrate the level of assist.
During NAVA, the patient's efficiency to transform neural effort (EAdi) into Vt, expressed as neuroventilatory efficiency (NVE), may be a useful predictor for determining the contribution of the patient and the ventilator to generate a breath.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- patient with respiratery failure need mechinical ventilation, and will be tolerance short time loe level support ventilation
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
PVBC index
Time frame: every 3 mins
PVBC2predicts the contribution of the inspiratory muscles versus that of the ventilator during NAVA
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Jul 2014.
- Derived from this study: PubMed 25882607Liu L, Liu S, Xie J, Yang Y, Slutsky AS, Beck J, Sinderby C, Qiu H. Assessment of patient-ventilator breath contribution during neurally adjusted ventilatory assist in patients with acute respiratory failure. Crit Care. 2015 Feb 18;19(1):43. doi: 10.1186/s13054-015-0775-2.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Haibo Qiu study director
southeast univerity, China
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Respiratory Failure, run by Ling Liu at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Jul 2014. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
PVBC index (time frame: every 3 mins). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01663480, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jul 2014.