Effect of Nitrous Oxide on Intravenous Closed-loop Anesthesia

NCT ID: NCT00547209

Last Updated: 2016-09-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

672 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-10-31

Study Completion Date

2009-11-30

Brief Summary

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The main objective of the study is to analyze the influence of nitrous oxide on propofol and remifentanil requirements.

Detailed Description

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Nitrous oxide is a widely used anesthetic agent. The mechanism of its central action is not completely understood and its importance is questioned.

Total intravenous anesthesia can be driven by a computer using bispectral index as a controller. Such a system matches anesthetic agent requirements to the needs of each individuum and thus allows an unbiased evaluation of the influence of nitrous oxide. Two groups of patients are compared: one ventilated with a oxygen-air mixture and one with oxygen-nitrous oxide mixture. Anesthesia is provided by a "dual-loop" which adapts propofol and remifentanil target concentrations to maintain a bispectral index between 40 and 60 in both groups.

Conditions

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Anesthesia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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1

ventilation with air and oxygen

Group Type ACTIVE_COMPARATOR

air

Intervention Type DRUG

60% air combined with 40% oxygen for ventilation

2

ventilation with nitrous oxide and oxygen

Group Type EXPERIMENTAL

Nitrous oxide

Intervention Type DRUG

60% nitrous oxide combined with 40% oxygen for ventilation

Interventions

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air

60% air combined with 40% oxygen for ventilation

Intervention Type DRUG

Nitrous oxide

60% nitrous oxide combined with 40% oxygen for ventilation

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* General anaesthesia with controlled ventilation

Exclusion Criteria

* Age lower than 18 years
* Pregnant woman
* Allergy to the propofol or to a muscle myorelaxant
* Patients receiving a psychotropic treatment
* Presence of a central neurological disorder or a lesion cerebral
* Patients having an anomaly of blood cells count preoperative biological assessment
* Patients having had an anaesthesia in the previous month
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hopital Foch

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Marc Fischler, MD

Role: STUDY_CHAIR

Hopital Foch, 92150 Suresnes, France

Locations

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Hôpital Erasmes

Brussels, , Belgium

Site Status

CHU d'Angers

Angers, , France

Site Status

CH Victor Dupouy

Argenteuil, , France

Site Status

CHU de Besançon

Besançon, , France

Site Status

Clinique Saint Augustin

Bordeaux, , France

Site Status

Hôpital Beaujon

Clichy, , France

Site Status

Centre Hospitalier de Dreux

Dreux, , France

Site Status

Hôpital de Bicêtre

Le Kremlin-Bicêtre, , France

Site Status

Institut Paoli-Calmettes

Marseille, , France

Site Status

Centre Hospitalier Territorial Gaston Bourret

Nouméa, , France

Site Status

Hôpital Pitié-Salpêtrière

Paris, , France

Site Status

Hôpital Cochin

Paris, , France

Site Status

Hôpital de Hautepierre

Strasbourg, , France

Site Status

Hôpital Foch

Suresnes, , France

Site Status

Institut Claudius Regaud

Toulouse, , France

Site Status

Hôpital Trousseau

Tours, , France

Site Status

La Charite

Berlin, , Germany

Site Status

Countries

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Belgium France Germany

References

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Liu N, Chazot T, Genty A, Landais A, Restoux A, McGee K, Laloe PA, Trillat B, Barvais L, Fischler M. Titration of propofol for anesthetic induction and maintenance guided by the bispectral index: closed-loop versus manual control: a prospective, randomized, multicenter study. Anesthesiology. 2006 Apr;104(4):686-95. doi: 10.1097/00000542-200604000-00012.

Reference Type BACKGROUND
PMID: 16571963 (View on PubMed)

Karalapillai D, Leslie K, Umranikar A, Bjorksten AR. Nitrous oxide and anesthetic requirement for loss of response to command during propofol anesthesia. Anesth Analg. 2006 Apr;102(4):1088-93. doi: 10.1213/01.ane.0000198672.05639.0a.

Reference Type BACKGROUND
PMID: 16551904 (View on PubMed)

Liu N, Le Guen M, Boichut N, Genty A, Herail T, Schmartz D, Khefif G, Landais A, Bussac JJ, Charmeau A, Baars J, Rehberg B, Tricoche S, Chazot T, Sessler DI, Fischler M. Nitrous oxide does not produce a clinically important sparing effect during closed-loop delivered propofol-remifentanil anaesthesia guided by the bispectral index: a randomized multicentre study. Br J Anaesth. 2014 May;112(5):842-51. doi: 10.1093/bja/aet479. Epub 2014 Jan 31.

Reference Type DERIVED
PMID: 24486835 (View on PubMed)

Other Identifiers

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2007-08

Identifier Type: -

Identifier Source: org_study_id

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