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Alfentanil and the Elimination of Sympathetic Responses to Tracheal Intubation During Rapid Sequence Induction of Anesthesia: A Probability-based Approach

This study has been completed.
University Hospital, Aker
Information provided by (Responsible Party):
Oslo University Hospital Identifier:
First received: August 25, 2011
Last updated: January 25, 2012
Last verified: January 2012

Induction of anesthesia:

After 3 minutes pre-oxygenation with 100% oxygen, a blinded dose alfentanil (0,10,20,30,40,50 or 60 µg/kg, followed by thiopental 4 mg/kg and rocuronium 0.6 mg/kg will be administered over 15 sec. Laryngoscopy will be performed 40 s. after injection of rocuronium, with the goal being to have the endotracheal tube passed through the patients vocal cords and the cuff inflated within the following 15 s . The investigator performing the tracheal intubation is blinded to the dose of alfentanil administered.

Blood samples:

As part of the study efficacy, blood samples, will be collected prior to induction and 30 s., 1 min. 3 min. and 5 min postintubation to determine blood concentrations of alfentanil and catecholamines.

Condition Intervention Phase
Anesthesia Intubation Complication
Drug: Alfentanil 0.5mg/ml (Rapifen , Janssen-Cilag)
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Prevention
Official Title: Alfentanil and the Elimination of Sympathetic Responses to Tracheal Intubation During Rapid Sequence Induction of Anesthesia: A Probability-based Approach

Resource links provided by NLM:

Further study details as provided by Oslo University Hospital:

Primary Outcome Measures:
  • Alfentanil and blockage of sympathetic responses: A dose-response study. [ Time Frame: 2 years ]
    Effectivness of controling Blood pressure during intubation

Enrollment: 84
Study Start Date: September 2009
Study Completion Date: October 2011
Primary Completion Date: September 2011 (Final data collection date for primary outcome measure)
Intervention Details:
    Drug: Alfentanil 0.5mg/ml (Rapifen , Janssen-Cilag)

    Induction dose(0µg/kg,10µg/kg,20µg/kg,30µg/kg,40µg/kg,50µg/Kg,and 60µg/kg) 12 patients in each dose group.

    Pentothal 4mg/kg Rocuronium 0.6 mg/kg

  Show Detailed Description


Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • ASA I and II patients and admitted for elective surgery.
  • Aged 18-55 years
  • Written informed consent

Exclusion Criteria:

  • Body Mass Index (BMI) > 28 Kg/m²
  • Patients with known allergy to study drug
  • Patients with known porphyria
  • Neuromuscular disease or undergoing treatment with drugs known to interfere with neuromuscular transmission.
  • Mallampati class > 2airway anatomy, or anticipated difficulty with mask ventilation or tracheal intubation.
  • Neuromuscular disease
  • Pulmonary disease
  • Cardiovascular disease.
  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: NCT01518608

Oslo University Hospital/ Aker
Oslo, Akershus, Norway, 0514
Oslo University Hospital / Aker
Oslo, Norway, 0514
Sponsors and Collaborators
Oslo University Hospital
University Hospital, Aker
Study Director: Tom Heier, MD, Phd. University of Oslo
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Oslo University Hospital Identifier: NCT01518608     History of Changes
Other Study ID Numbers: 29237403/SMR-1651
Study First Received: August 25, 2011
Last Updated: January 25, 2012

Keywords provided by Oslo University Hospital:
Tracheal intubation
Rapid sequence induction

Additional relevant MeSH terms:
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Anesthetics, Intravenous
Anesthetics, General
Anesthetics processed this record on May 22, 2017