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Dexmedetomidine-propofol-remifentanil Anaesthesia and Reactivity to Noxious Stimuli

This study has been completed.
Information provided by (Responsible Party):
Arvi Yli-Hankala, Tampere University Hospital Identifier:
First received: February 25, 2010
Last updated: October 8, 2013
Last verified: October 2013
Dexmedetomidine acts at central nervous system (specifically: at locus caeruleus), providing sedative and analgesic effects. It is widely used in intensive care. Surgery-related interventions elicit arousal ('nociceptive') reactions. The effects of dexmedetomidine on the neurophysiological signs of arousal are studied in surgical patients. Brain waves, electrocardiogram, Entropy Index, Bispectral Index, and fingertip pulse waves are recorded and analyzed later on. The course of anaesthesia and surgery are recorded.

Condition Intervention Phase
Drug: Dexmedetomidine
Drug: Saline
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Basic Science
Official Title: The Effect of Dexmedetomidine on Reactivity to Noxious Stimuli During Propofol-remifentanil Anaesthesia and Surgery

Resource links provided by NLM:

Further study details as provided by Tampere University Hospital:

Primary Outcome Measures:
  • Physiological reaction to noxious stimulus [ Time Frame: 30 minutes ]
    Nociception-associated changes in EEG, EMG, Entropy Index values, BIS Index values, morphology of plethysmogram or ECG, heart rate, or hear rate variability.

Enrollment: 44
Study Start Date: November 2009
Study Completion Date: March 2011
Primary Completion Date: March 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Dexmedetomidine
Analgo-sedative, adjuvant of propofol anesthesia
Drug: Dexmedetomidine
Dexmedetomidine infusion 1 mcg/kg in 10 minutes; thereafter 0.7 mcg/kg/h until 30 minutes has elapsed from skin incision.
Other Name: Precedex. CAS 113775476.
Drug: Saline
Saline infusion 1 mcg/kg in 10 minutes; thereafter 0.7 mcg/kg/h until 30 minutes has elapsed from skin incision.

Detailed Description:

The patients are randomized to receive either dexmedetomidine or saline infusion before and during anaesthesia (dexmedetomidine 0.1 mcg/kg within 10 minutes, thereafter 0.7 mcg/kg/h until 30 min after skin incision).

Multi-channel EEG, Entropy, BIS, multi-channel EMG, ECG, and plethysmogram are recorded on computer. Anaesthesia and surgery associated events are annotated on computer.

Time points of endotracheal intubation, skin incision, and course of surgery well be analyzed in detail. Additionally, tetanic stimulus of ulnar nerve will be applied for each patient, and reactions to the stimulus will be analyzed.


Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • males or females giving informed consent
  • age range 18-70 years
  • elective surgery: laparoscopy, laparotomy, breast surgery
  • general anaesthesia
  • ASA classification 1 or 2

Exclusion Criteria:

  • pregnancy
  • body mass index 30.1 or more
  • diseases affecting CNS, autonomic nervous system, heart, heart rate, or circulation
  • chronic use of drugs affecting CNS, autonomic nervous system, heart, heart rate, or circulation; except antihypertensives, which are acceptable in this study
  • chronic use of clonidine
  • serious psychiatric disease or condition
  • overuse of alcohol
  • use of illicit drugs
  • unability of understand, read or use Finnish language
  Contacts and Locations
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Please refer to this study by its identifier: NCT01076790

Tampere University Hospital
Tampere, Finland, 33521
Sponsors and Collaborators
Arvi Yli-Hankala
Study Chair: Arvi Yli-Hankala, MD Tampere University Hospital
Principal Investigator: Arvi Yli-Hankala, MD Tampere University Hospital
  More Information

Responsible Party: Arvi Yli-Hankala, Professor, Tampere University Hospital Identifier: NCT01076790     History of Changes
Other Study ID Numbers: Kotoe_01
2009-014619-11 ( EudraCT Number )
Study First Received: February 25, 2010
Last Updated: October 8, 2013

Keywords provided by Tampere University Hospital:
Entropy Index
Bispectral Index
Heart rate
Heart rate variability

Additional relevant MeSH terms:
Central Nervous System Depressants
Physiological Effects of Drugs
Hypnotics and Sedatives
Analgesics, Non-Narcotic
Sensory System Agents
Peripheral Nervous System Agents
Adrenergic alpha-2 Receptor Agonists
Adrenergic alpha-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Anesthetics, Intravenous
Anesthetics, General
Analgesics, Opioid
Narcotics processed this record on May 22, 2017