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Postoperative Cardiovascular ComplicationsBNPNCT02570607

Preoperative BNP as Biomarker of Postoperative Cardiovascular Complications

An observational study of Postoperative Cardiovascular Complications, run by Centre Hospitalier Universitaire de Nice.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

BNP is a hormone that predicts preoperatively the occurrence of postoperative cardiovascular complications. In practice, the problem is that the practitioner don't know the most opportune moment for the preoperative sample or what threshold used to classify our patient in patients at risk of cardiovascular… Read more about this study

Who is it for?
Ages 18 to 100 years
What is being tested?
BNP dosage
How many people
200 participants
Where
No sites listed yet
Study dates
Nov 2015to May 2017
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 100 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: patient Who have to undergoing moderate or high cardiovascular risk non-ambulatory scheduled surgery with the exception of cardiac surgery

Who may be able to join

  • Major patients who was not opposed to one additional sample
  • Who have to undergoing moderate or high cardiovascular risk non-ambulatory scheduled surgery with the exception of cardiac surgery
  • With predictable delay between the preoperative evaluation and the surgery > 15 days

Who cannot join

  • Moderate cardiovascular risk surgeries (1-5%):
  • Carotid Endarterectomy
  • Surgery of the Head and Neck
  • Thoracic surgery and intraperitoneal (thromboembolism)
  • Orthopaedic surgery (thromboembolism)
  • Prostate Surgery (thromboembolism)
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  • High cardiovascular risk surgeries (> 5%):
  • Aortic surgery with risk of sudden changes in blood pressure during clamping (acute pulmonary edema, ischemia)
  • declamping (coronary perfusion)
  • other major vascular surgery - peripheral vascular surgery - long surgery with significant blood loss or fluid and electrolyte

About this study

Official title: Relevance of Preoperative BNP as a Biomarker of Postoperative Cardiovascular Complications in Major Non-cardiac Adult Surgery

BNP is a hormone that predicts preoperatively the occurrence of postoperative cardiovascular complications. In practice, the problem is that the practitioner don't know the most opportune moment for the preoperative sample or what threshold used to classify our patient in patients at risk of cardiovascular complication or not at risk.

The purpose of this study is to determine the best time to dose the preoperative BNP with a specific threshold being associated with it allowing the practitioner to assess more accurately the post operative cardiovascular risk patients and possibly offer them strategies taking different load.

Read more

The BNP will be dosed during the anesthetic consultation and the day of surgery in immediate preoperative operating room. Post-operative cardiovascular complications will be collected during hospitalization of the patient and by telephone contact on the 28th day, 90th day and 6th postoperative months.

The investigator then establish the threshold BNP most informative for both sampling times and then compare them to determine the most discriminating dosage and thus the most appropriate time for the determination of BNP.

Read the detailed description

The morbidity and mortality of non-cardiac major surgery is mainly due to cardiovascular complications. BNP is a hormone for predicting preoperatively the occurrence of these complications. Widely used in cardiac surgery, it is not routinely used in non-cardiac major surgery. His interest in this type of surgery has yet been proven by numerous studies.

In practice, the problem with this biomarker is the pratitioner do not know the most opportune moment for the preoperative dose or what threshold used to classify our patient patients at risk of cardiovascular complication or not at risk.

Indeed, recent literature reviews are used to highlight the fact that existing studies on the subject using each method or BNP assay devices and heterogeneous preoperative dosing of different times or even BNP not exactly specified. It thus appears as many different levels of BNP. Practitioners did not then know when dosing the BNP and what threshold is based.

The purpose of this study is to determine the best time to dose the preoperative BNP with a specific threshold being associated with it allowing the practitioner to assess more accurately the post operative cardiovascular risk patients and possibly offer them strategies taking different load.

The BNP will be dosed during the anesthetic consultation and the day of surgery in immediate preoperative operating room. Post-operative cardiovascular complications will be collected during hospitalization of the patient and by telephone contact on the 28th day, 90th day and 6th postoperative months.

The investigator then establish the threshold BNP most informative for both sampling times and then compare them to determine the most discriminating dosage and thus the most appropriate time for the determination of BNP.

There will be no immediate benefit to the patient but our study will help in the future, to adapt the management of perioperative patients depending on the value of pre immediate operative BNP to reduce postoperative complications.

Being tested
BNP dosage

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • BNP dosageBiological

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. occurrence of a complication or cardiovascular events

    The endpoint is the occurrence of a complication or cardiovascular events (composite endpoint). A cardiovascular event is defined by the occurrence of syndromes such as IDM, acute cardiogenic lung edema, a rhythm disturbance (ACFA, flutter, TV, FV) or c

    Measured: 2 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Oct 2015 (estimated)
  2. Study startNov 2015
  3. Primary completionMay 2016
  4. Study completionMay 2017

Resources

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
Other
Time perspective
Prospective
Enrolment
200 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02570607
Sponsor's protocol ID
15-PP-10
Acronym
BNP
Status last verified
Jul 2018
First submitted
5 Oct 2015
Last updated
24 Jul 2018
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

An observational study of Postoperative Cardiovascular Complications, run by Centre Hospitalier Universitaire de Nice.

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 3 inclusion and 10 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 24 Jul 2018. Status can change between updates, so confirm with the study contact before making plans.

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?

occurrence of a complication or cardiovascular events (time frame: 2 years). 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 24 Jul 2018.

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