Low Bispectral IndexNCT00998894
Randomized Trial of Alerts in Patients Demonstrating a "Triple Low"
An observational study of Low Bispectral Index and Low Mean Arterial Blood Pressure, run by The Cleveland Clinic at 1 site in United States.
Trial summary
The investigators propose to test the theory that smart alarms for the Triple Low State incorporated into a decision support system built into an electronic anesthesia record will prompt clinicians to intervene earlier in situations that would otherwise provoke little concern, and that the alert system will reduce… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Low Bispectral Index, Low Mean Arterial Blood Pressure, Low End-tidal Anesthetic Concentration
- How many people
- 9,846 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2009to Dec 2016
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: adults presenting for non-cardiac surgery under volatile general anesthesia
Who may be able to join
- Adults presenting for non-cardiac surgery under volatile general anesthesia
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Randomized Effectiveness Trial of Early Hemodynamic Support in Patients Demonstrating a "Triple Low" of Mean-arterial Pressure, End-tidal Anesthetic Concentration, and Bispectral Index
The investigators propose to test the theory that smart alarms for the Triple Low State incorporated into a decision support system built into an electronic anesthesia record will prompt clinicians to intervene earlier in situations that would otherwise provoke little concern, and that the alert system will reduce 90-day mortality. Specifically, the investigators will test the hypothesis that providing Triple Low alerts reduces 90-day mortality.
- Conditions
- Low Bispectral Index, Low Mean Arterial Blood Pressure, Low End-tidal Anesthetic Concentration
- Keywords
- BIS, MAC, MAP
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| decision-support alerts | In patients experiencing a Triple Low (a combination of low MAC, low MAP, and low BIS), a warning alert will be generated for clinicians. | |
| routine practice | In patients experiencing a Triple Low (a combination of low MAC, low MAP, and low BIS), a warning alert will not be generated for clinicians. |
What is being measured
The primary outcome is the main question the study is designed to answer.
90-day mortality
Measured: 90-days
Secondary outcomes (3)
30-day mortality
Measured: 30-days
Response to alerts
Vasopressor administration within 5 minutes or reduction in volatile anesthetic within 15 minutes of Triple Low onset
Measured: Intraoperative
Hospital-free days within the initial postoperative month
Measured: 30-days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Oct 2009 (estimated)
- Study startOct 2009
- Primary completionSep 2016
- Study completionDec 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Low Bispectral IndexStudies of the same condition, open and under way.
- More trials run by The Cleveland ClinicThe sponsor's other registered studies.
- 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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 9,846 participants (actual)
Sponsor and investigators
- Lead sponsor
- The Cleveland Clinic
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, d sessler, The Cleveland Clinic
- Investigators
- Daniel I Sessler, M.D., Principal investigator, The Cleveland Clinic
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00998894
- Sponsor's protocol ID
- 09-453
- Status last verified
- Mar 2017
- First submitted
- 19 Oct 2009
- Last updated
- 21 Mar 2017
- Results posted
- No
- Data monitoring committee
- Yes
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 Mar 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Randomized Effectiveness Trial of Early Hemodynamic Support in Patients Demonstrating a "Triple Low" of Mean-arterial Pressure, End-tidal Anesthetic Concentration, and Bispectral Index
- ClinicalTrials.gov ID
- NCT00998894
- Acronym / sponsor ID
- 09-453
- Conditions
- Low Bispectral Index, Low Mean Arterial Blood Pressure, Low End-tidal Anesthetic Concentration
- Keywords
- BIS, MAC, MAP
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 9,846 participants (actual)
- Lead sponsor
- The Cleveland ClinicUniversity, hospital or other
- Study start
- Oct 2009
- Primary completion
- Sep 2016 (actual)
- Study completion
- Dec 2016 (actual)
- First posted
- 21 Oct 2009 (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 investigators propose to test the theory that smart alarms for the Triple Low State incorporated into a decision support system built into an electronic anesthesia record will prompt clinicians to intervene earlier in situations that would otherwise provoke little concern, and that the alert system will reduce 90-day mortality. Specifically, the investigators will test the hypothesis that providing Triple Low alerts reduces 90-day mortality.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| decision-support alerts | – | –In patients experiencing a Triple Low (a combination of low MAC, low MAP, and low BIS), a warning alert will be generated for clinicians. |
| routine practice | – | –In patients experiencing a Triple Low (a combination of low MAC, low MAP, and low BIS), a warning alert will not be generated for clinicians. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- adults presenting for non-cardiac surgery under volatile general anesthesia
Key inclusion criteria (1 listed)
- Adults presenting for non-cardiac surgery under volatile general anesthesia
Key exclusion criteria (0 listed)
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
90-day mortality
Time frame: 90-days
3 secondary outcomes
30-day mortality
Time frame: 30-days
Response to alerts
Time frame: Intraoperative
Hospital-free days within the initial postoperative month
Time frame: 30-days
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 21 Mar 2017.
- Individual participant dataSharing planned: No
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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.
Daniel I Sessler, M.D. principal investigator
The Cleveland Clinic
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 Low Bispectral Index and Low Mean Arterial Blood Pressure, run by The Cleveland Clinic at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 0 exclusion criteria. 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 21 Mar 2017. 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 United States. 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?
90-day mortality (time frame: 90-days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 21 Mar 2017; AzTrials last refreshed its copy on 7 Nov 2026.