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The main objective of the study is to analyze the influence of nitrous oxide on propofol and remifentanil requirements.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 1 | Active Comparator | ventilation with air and oxygen |
|
| 2 | Experimental | ventilation with nitrous oxide and oxygen |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| air | Drug | 60% air combined with 40% oxygen for ventilation |
| |
| Nitrous oxide |
| Measure | Description | Time Frame |
|---|---|---|
| Measure: influence of nitrous oxide on the automated administration of propofol and remifentanil. | during anesthesia |
| Measure | Description | Time Frame |
|---|---|---|
| Measure: consequences of the use of nitrous oxide on the performance of the automated administration system. | during anesthesia | |
| Influence of Gender | during anesthesia |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Marc Fischler, MD | Hopital Foch, 92150 Suresnes, France | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hôpital Erasmes | Brussels | Belgium | ||||
| CHU d'Angers |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 16571963 | Background | 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. | |
| 16551904 |
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| ID | Term |
|---|---|
| D000388 | Air |
| D009609 | Nitrous Oxide |
| ID | Term |
|---|---|
| D001272 | Atmosphere |
| D004777 | Environment |
| D055669 | Ecological and Environmental Phenomena |
| D001686 | Biological Phenomena |
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| Drug |
60% nitrous oxide combined with 40% oxygen for ventilation |
|
| Angers |
| France |
| CH Victor Dupouy | Argenteuil | 95100 | France |
| CHU de Besançon | Besançon | 25030 | France |
| Clinique Saint Augustin | Bordeaux | 33000 | France |
| Hôpital Beaujon | Clichy | 92110 | France |
| Centre Hospitalier de Dreux | Dreux | 28102 | France |
| Hôpital de Bicêtre | Le Kremlin-Bicêtre | 94275 | France |
| Institut Paoli-Calmettes | Marseille | 13009 | France |
| Centre Hospitalier Territorial Gaston Bourret | Nouméa | 98849 | France |
| Hôpital Pitié-Salpêtrière | Paris | 75013 | France |
| Hôpital Cochin | Paris | 75014 | France |
| Hôpital de Hautepierre | Strasbourg | 67200 | France |
| Hôpital Foch | Suresnes | 92151 | France |
| Institut Claudius Regaud | Toulouse | 31052 | France |
| Hôpital Trousseau | Tours | 37044 | France |
| La Charite | Berlin | D - 10117 | Germany |
| 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. |
| 24486835 | Derived | 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. |
| D008685 |
| Meteorological Concepts |
| D004778 | Environment and Public Health |
| D009589 | Nitrogen Oxides |
| D005740 | Gases |
| D007287 | Inorganic Chemicals |
| D017672 | Nitrogen Compounds |
| D010087 | Oxides |
| D017601 | Oxygen Compounds |