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Clinical Trial Summary

We studied intubating conditions and hemodynamic changes during endotracheal intubation employing either Bonfils intubating fiberscope or the conventional Macintosh laryngoscopy in 80 healthy patients candidates for elective surgery requiring endotracheal intubation. We omitted neuromuscular blocking drugs from the induction regimen.


Clinical Trial Description

BACKGROUND:

Neuromuscular blocking drugs (NMBDs) are believed to be the dominating antigens causing bronchospasm and anaphylaxis during anaesthesia. Avoidance of these drugs, however, renders compromised intubating conditions and higher morbidity with conventional Macintosh laryngoscopy. Thus, we compared Macintosh laryngoscopy with Bonfils intubation fibrescope without administering NMBDs.

METHODS:

Eighty male and female patients scheduled for elective surgery, aged 15 to 60 years, ASA class II or I, non-obese, with lower risk for difficult intubation were enrolled in this study. They were randomly allocated into the Bonfils group or the Macintosh group (40 each). Following adequate hydration and preoxygenation, midazolam 0.05 mg kg-1 was administered, followed by alfentanil 20 µg kg-1, lidocaine 1.5 mg kg-1, and propofol 2 mg kg-1 intravenously. Tracheal intubation was then carried out using Bonfils intubation fibrescope (Bonfils group) or employing conventional Macintosh laryngoscopy (Macintosh group). The primary outcome measure was the intubating condition, with mean arterial blood pressure and heart rate as secondary outcomes. ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00620386
Study type Interventional
Source Tehran University of Medical Sciences
Contact
Status Completed
Phase Phase 2/Phase 3
Start date October 2006
Completion date August 2007

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