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Factors Influencing Anesthetic Drug Requirement (PosoAnes)

This study is currently recruiting participants. (see Contacts and Locations)
Verified March 2017 by Hopital Foch
Information provided by (Responsible Party):
Hopital Foch Identifier:
First received: May 8, 2009
Last updated: March 24, 2017
Last verified: March 2017
The main objective of the study is to analyze the influence of several environmental (i.e., timing: seasonal, circadian) and demographic conditions (i.e., age, gender, menstrual cycle) on anesthetic drug requirements (hypnotic and opiate).

Condition Intervention
Anesthesia, General
Device: Closed loop anesthesia

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: Impact of Environmental and Demographic Factors on Pre-operative Doses of Anesthetic Agents (Prospective Multicenter Study)

Resource links provided by NLM:

Further study details as provided by Hopital Foch:

Primary Outcome Measures:
  • The dose of propofol required to maintain BIS (bispectral index) between 40 and 60 during maintenance of anesthesia [ Time Frame: during anesthesia ]

Secondary Outcome Measures:
  • Propofol dose required for anesthesia induction [ Time Frame: intraoperative period ]
  • Remifentanil dose required for anesthesia induction [ Time Frame: intraoperative period ]
  • Remifentanil dose requirements for maintenance of anesthesia [ Time Frame: intraoperative period ]
  • Wake up time [ Time Frame: intraoperative period ]
  • Explicit memorisation [ Time Frame: post-operative period ]
  • Propofol and remifentanil requirements according to the surgical technique [ Time Frame: post-operative period ]
  • Analysis of subgroup of patients according to their clinical status [ Time Frame: post-operative period ]
    analysis of subgroup of patients according to their clinical status (eg: age)

  • Analysis of subgroup of patients according to the surgical approach [ Time Frame: post-operative period ]
    analysis of subgroup of patients according to the surgical approach ("open" surgery versus "minimal invasive" surgery)

  • Analysis of subgroup of patients according to their pathology [ Time Frame: post-operative period ]
    analysis of subgroup of patients according to their pathology (eg: burns)

Estimated Enrollment: 5000
Study Start Date: May 2009
Estimated Study Completion Date: June 2017
Primary Completion Date: May 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Closed loop anesthesia Device: Closed loop anesthesia
Propofol and Remifentanil are administered automatically using a closed-loop system


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients undergoing scheduled surgery under general anesthesia, agreeing to participate in the study

Exclusion Criteria:

  • Age under 18 years
  • Pregnancy, breastfeeding woman
  • Allergy to propofol, soybeans or peanuts
  • Allergy to sufentanil, remifentanil, morphine,
  • Allergy to a muscle relaxant or to any of its excipients
  • Known hypersensitivity to sufentanil, remifentanil, or to other derivates of fentanyl
  • History of central neurological disorder or brain injury
  • Patient with dementia
  • Patient with pacemaker
  • Patient receiving psychotropic drugs or morphine agonist-antagonists
  • Surgery on the skull and/or operating position preventing the use of a bispectral index sensor in suitable conditions
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00896714

Contact: Marc Fischler, MD 46252442 ext 00331

Clinique de la Baie des Citrons Recruiting
Nouméa, Nouvelle Calédonie, France, 98800
Contact: Alain , Charmeau    00261866 ext 0033   
Principal Investigator: Alain Charmeau, MD         
CHU Besançon Recruiting
Besançon, France, 25000
Contact: Nathalie Boichut, MD    381668166 ext 00331   
Principal Investigator: Nathalie Boichut, MD         
Centre Hospitalier de Dreux Recruiting
Dreux, France, 28102
Contact: T. Herail, MD   
Principal Investigator: T. Herail, MD         
Hôpital Tenon Recruiting
Paris, France, 75020
Contact: Francis Bonnet, MD    56016571 ext 00331   
Principal Investigator: Francis Bonnet, MD         
Hôpital Foch Recruiting
Suresnes, France, 92151
Contact: Marc Fischler, MD    46252442 ext 00331   
Principal Investigator: Thierry Chazot, MD         
Sponsors and Collaborators
Hopital Foch
Study Chair: Marc Fischler, MD Hôpital Foch
  More Information

Responsible Party: Hopital Foch Identifier: NCT00896714     History of Changes
Other Study ID Numbers: 2008/44
Study First Received: May 8, 2009
Last Updated: March 24, 2017

Additional relevant MeSH terms:
Central Nervous System Depressants
Physiological Effects of Drugs processed this record on May 25, 2017