- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00793663
Depth of Hypnosis and Postoperative Nausea and Vomiting During Xenon Anaesthesia (XABP)
1) The Effect of Xenon and Sevoflurane on Hypnosis Monitors. 2) Prevention of Postoperative Nausea and Vomiting. 3) Rescue Treatment of Established Postoperative Nausea and Vomiting. Sevoflurane.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Patients included into the trial will randomly be allocated to either 0.8-1.1 minimum alveolar concentration (MAC) xenon in 30 % oxygen or 0.8-1.1 MAC sevoflurane (age adapted)/30 % oxygen. The MAC is defined and will therefore be applied according to the investigated subject's age. Premedication will be performed with midazolam 7.5 mg orally 45 min before induction (standard dose and application form for adults as clinical practice of our department). Anesthesia will be induced in both groups with propofol 2 mg/kg i.v. and remifentanil 0.5 mcg/kg/min by infusion over 60 s. For tracheal intubation non-depolarizing neuromuscular blocking agents can be used (rocuronium 0.6 mg/kg). Both groups will receive remifentanil at a base rate of 0.2 mcg/kg/min. Xenon or sevoflurane can be titrated in the range from 0.8-1.1 MAC according to clinical needs based on the patient's hemodynamic, autonomic and somatic signs. Twenty minutes before the estimated cessation of all surgical procedures 0.05 mg kg-1 piritramide for post anesthetic pain management will be administered intravenously, as well as a short infusion of metamizole 15 mg kg-1.
Depth of anesthesia (hypnosis) will be monitored with spontaneous EEG (BIS VISTA, Aspect Medical Systems, Newton, MA) and the mid latency auditory evoked potentials including a monitoring variable indicating the patients hypnotic state calculated from the MLAEP and the electroencephalogram, the composite A-Line ARX Index (cAAI) with the AEP Monitor/2 (Danmeter A/S, Odense, Denmark). Dosing will be conducted according to the current clinical standard without the monitoring, thus the anesthesia provider will be blinded towards both measurements.
- After induction of anesthesia patients will be randomized to a second factor, i.e. 4 mg dexamethasone or placebo for the prevention of PONV. To avoid potential imbalances, this will be achieved using a factorial design. The application of dexamethasone or placebo will be blinded to the investigator assessing postoperative nausea and vomiting.
- Patients who experience significant nausea will be randomized to receive either 4 mg ondansetron or placebo and the course of nausea will be assessed for > 32 min. Again, the application of ondansetron or placebo will be blinded to the investigator assessing postoperative nausea and vomiting. If the symptoms of postoperative nausea and vomiting persist for more than 32 min after treatment additional rescue treatment will be offered. Of note, all patients are able to receive further rescue treatment at any time point of the study on demand.
Study Type
Enrollment (Anticipated)
Phase
- Phase 4
Contacts and Locations
Study Locations
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Aachen, Germany, D-52074
- RWTH Aachen University; Department of Anesthesiology
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- patients ≥ 18 < 75 years
- ASA physical status I-II
- planned duration of anesthesia ≥ 60 minutes
- Apfel score ≥ 2-3
- elective (laparoscopic) surgery (abdominal, gynecological)
- women: with a highly effective contraception, defined as methods with a pearl index < 1 (i.e. hormonal contraceptives, IUD)
Exclusion Criteria:
- history of hypersensitivity to any used drugs or additive components used for preparation and stabilization of the named drugs in this trial
- history or reasonable suspicion of malignant hyperthermia and/or degenerative neuromuscular disease, in the subject observed or blood relatives
- history of liver function disorders, leucocytosis and unclear fever after usage of halogenated anesthetics.
- any indisposition that may be aggravated by the use of the drugs investigated:
- liver and/or kidney function disorders
- severe acute or chronic infectious disease (i.e. viral, bacterial, fungal)
- elevated intracranial pressure
- history of gastrointestinal ulcer(s) or inflammatory bowel disease
- severe metabolic disorders
- hematoporphyria
- glaucoma
- hearing disorders
- any disease including air-filled closed cavities, such as pneumothorax, ileus
- pregnancy and lactation period
- subjects under the age of 18 years
- ambulatory surgery
- any disease that is associated with the requirement of a high oxygen yield and/or
- risk of high oxygen consumption:
- severe lung and/or airway disease
- coronary heart disease and/or seriously impaired cardiac function
- severe psychiatric disorder
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: 4
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Intravenous use; single shot
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Placebo Comparator: 6
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Intravenous use; single shot
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Experimental: 1
The effect of xenon as an anaesthetic on the depth of hypnosis.
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Inhalational gas; maximum dose allowed: 70 % Xenon; the duration of the treatment will be defined through anesthesia-time.
Other Names:
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Active Comparator: 2
The effect of sevoflurane as an anesthetic on the depth of hypnosis
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Inhalation gas; age adapted MAC-values; the duration of the treatment will be defined through anesthesia-time
Other Names:
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Experimental: 3
Dexamethasone as prevention of postoperative nausea and vomiting after xenon or sevoflurane anesthesia
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Intravenous use, 4 mg, single shot
Other Names:
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Experimental: 5
Ondansetron, to determine the onset-time of ondansetron when used as rescue medication for postoperative nausea and vomiting
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Intravenous use; 4 mg; single shot
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The average depths of hypnosis as assessed by the BIS and the cAAI between skin incision and start of closure.
Time Frame: During anaesthesia
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During anaesthesia
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Postoperative nausea as assessed by a verbal rating scale (VRS) ranging between 0 and 10.
Time Frame: After anesthesia at 5, 10, 15, 30, 45, 60, and 90 min. At 2, 6 and 24 h after anesthesia the maximum nausea will be rated for the 30-120 min, 2-6 h, and 6-24 h interval.
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After anesthesia at 5, 10, 15, 30, 45, 60, and 90 min. At 2, 6 and 24 h after anesthesia the maximum nausea will be rated for the 30-120 min, 2-6 h, and 6-24 h interval.
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Reduction of VRS nausea immediately at 2, 5, 7.5, 10, 15, 20 and 30 min after rescue treatment administration.
Time Frame: Maximum nausea will be rated at 2, 6 and 24 hours after treatment for the 30-120 min, 2-6 h and 6-24 h interval.
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Maximum nausea will be rated at 2, 6 and 24 hours after treatment for the 30-120 min, 2-6 h and 6-24 h interval.
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Heart rate and blood pressure
Time Frame: During anesthesia
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During anesthesia
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Observer´s assessment of alertness and sedation scales
Time Frame: Recovery from anesthesia
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Recovery from anesthesia
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Sensitivity and specificity characteristics for both the BIS and the cAAI.
Time Frame: During anesthesia
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During anesthesia
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Awareness after anesthesia assessed by the Brice questionnaire at 2 and 24 hours after anesthesia.
Time Frame: 24 hours after anaesthesia
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24 hours after anaesthesia
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Occurrence of postoperative vomiting and the respective time-points will be recorded. Postoperative vomiting is defined as vomiting or retching.
Time Frame: 24 hours postoperative
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24 hours postoperative
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Usage of rescue medication, time and dosage
Time Frame: 24 hours postoperative
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24 hours postoperative
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Time to discharge from post anesthetic care unit (Aldrete Score ≥ 9 equals the hypothetic discharge time from post anesthetic care unit)
Time Frame: Time in the post anesthetic care unit
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Time in the post anesthetic care unit
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Chair: Rolf Rossaint, MD, RWTH University Aachen; Department of Anesthesiology
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Postoperative Complications
- Signs and Symptoms, Digestive
- Nausea
- Vomiting
- Postoperative Nausea and Vomiting
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Autonomic Agents
- Peripheral Nervous System Agents
- Anesthetics, General
- Anesthetics
- Anti-Inflammatory Agents
- Platelet Aggregation Inhibitors
- Antineoplastic Agents
- Antiemetics
- Gastrointestinal Agents
- Glucocorticoids
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Antineoplastic Agents, Hormonal
- Dermatologic Agents
- Antipsychotic Agents
- Tranquilizing Agents
- Psychotropic Drugs
- Serotonin Agents
- Serotonin Antagonists
- Anti-Anxiety Agents
- Anesthetics, Inhalation
- Antipruritics
- Dexamethasone
- Dexamethasone acetate
- Sevoflurane
- Ondansetron
Other Study ID Numbers
- ALS-8-08-A-401
- EudraCT-number:
- 2008-004132-20
- Protocol version:
- Version V3; Date: 20.10.2008
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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