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The effect of muscle relaxant drugs on the larynx

The effect of muscle relaxant drugs on the larynx

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN41705277
Enrollment
40
Registered
2004-01-23
Start date
1997-02-01
Completion date
Unknown
Last updated
2019-11-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Ear, nose and throat diseases Ear, Nose and Throat

Interventions

group 2 rocuronium 0.6 mg.kg-1
group 3 atracurium 0.45 mg.kg-1
group 4 suxamethonium 1.0 mg.kg-1
and group 5 mivacurium 0.16 mg.kg-1.
Phase I: The patients will be allocated randomly to one of four groups. Group one will have the adductor pollicis twitch reduced by 25%, group two 50%, group three 75% and group four 90%.

Sponsors

NHS R&D Regional Programme Register - Department of Health (UK)
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Phase 1: 40 patients will be studied in this randomised crossover study. All patients will be scheduled to undergo elective surgery which will require the use of nondepolarizing muscle relaxants. Phase 2: American Society of Anesthesiologists (ASA) 1&2 patients will be studied initially. Inclusion and exclusion criteria and patient monitoring will be as for Phase 1. Patients will then be allocated randomly to receive one of five muscle relaxants (10 per group). If numbers prove insufficient, further patients will be recruited, in groups of 25 (5 per group).

Exclusion criteria

Exclusion criteria: Any patient with a history of regurgitation, dyspepsia or neuromuscular disease or who is taking any medication that may interfere with neuromuscular function will be excluded.

Design outcomes

Primary

MeasureTime frame
Interim and final reports for review by NHS Executive Trent

Secondary

MeasureTime frame
Not provided at time of registration

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026