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Comparison of Recovery From Rocuronium 1.2 mg/kg Followed By Org 25969 16 mg/kg at 3 Minutes With Recovery From Succinylcholine 1.0 mg/kg (19.4.303)(P05946)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: May 16, 2007
Last Update Posted: August 22, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Merck Sharp & Dohme Corp.
The purpose of the trial is to demonstrate a faster recovery from neuromuscular block induced by 1.2 mg/kg Zemuron® after reversal at 3 minutes by 16.0 mg/kg of Org 25969 compared with recovery after a neuromuscular block induced by 1.0 mg/kg succinylcholine.

Condition Intervention Phase
Anesthesia, General Drug: Sugammadex Drug: succinylcholine Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Multicenter, Randomized, Parallel Group, Comparative, Active-Controlled, Safety-Assessor Blinded, Phase IIIa, Trial, in Adult Subjects Comparing Recovery From 1.2 mg.Kg-1 Rocuronium Followed by 16 mg.Kg-1 Org 25969 at 3 Minutes With Recovery From 1.0 mg.Kg-1 Succinylcholine

Resource links provided by NLM:

Further study details as provided by Merck Sharp & Dohme Corp.:

Primary Outcome Measures:
  • Recovery of T1 to 10% from start of rocuronium or succinylcholine administration [ Time Frame: After surgery ]

Secondary Outcome Measures:
  • Recovery of T1 to 90% from start of rocuronium or succinylcholine administration and clinical signs of recovery (level of consciousness, 5-second head lift, general muscle weakness) [ Time Frame: After surgery ]

Enrollment: 115
Actual Study Start Date: February 10, 2006
Study Completion Date: September 9, 2006
Primary Completion Date: August 22, 2006 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
rocuronium plus Org 25969
Drug: Sugammadex
Subjects were to receive an intubating dose of 1.2 mg/kg rocuronium followed by 16.0 mg/kg Org 25969 three minutes after the start of rocuronium administration.
Other Name: Org 25969
Active Comparator: 2
Drug: succinylcholine
Subjects were to receive an intubation dose of 1.0 mg/kg succinylcholine and allowed to recovery spontaneously from neuromuscular blockade.


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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • ASA Class 1 or 2;
  • 18 to 65 years of age (inclusive);
  • Scheduled for elective surgical procedure under general anesthesia requiring a short duration of neuromuscular block with the use of rocuronium or succinylcholine and requiring endotracheal intubation;
  • Scheduled for surgery in supine position;
  • Body mass index (BMI) < 30;
  • Given written informed consent.

Exclusion Criteria:

  • Subjects with ischemic heart disease or history of myocardial infarction within the last year;
  • Subjects in whom a difficult intubation is expected due to anatomical malformations;
  • Subjects known or suspected to have neuromuscular disorders impairing neuromuscular blockade and/or significant renal dysfunction;
  • Subjects known or suspected to have a (family) history of malignant hyperthermia;
  • Subjects known or suspected to have an allergy to narcotics, muscle relaxants, midazolam, anesthetics or other medications used during surgery;
  • Subjects receiving medication known to interfere with neuromuscular blocking agents such as anticonvulsants, antibiotics and Mg2+;
  • Subjects in whom the use of neostigmine and/or glycopyrrolate may be contraindicated;
  • Female subjects who are pregnant or breast-feeding;
  • Females subjects of childbearing potential not using an acceptable method of birth control [condom or diaphragm with spermicide, vasectomized partner (> 6 months), IUD, abstinence];
  • Subjects who had already participated in a Org 25969 trial including Protocol 19.4.303;
  Contacts and Locations
No Contacts or Locations Provided
  More Information

Additional Information:
Study Data/Documents: CSR Synopsis  This link exits the ClinicalTrials.gov site

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Merck Sharp & Dohme Corp.
ClinicalTrials.gov Identifier: NCT00474253     History of Changes
Other Study ID Numbers: P05946
First Submitted: May 15, 2007
First Posted: May 16, 2007
Last Update Posted: August 22, 2017
Last Verified: August 2017

Additional relevant MeSH terms:
Neuromuscular Nondepolarizing Agents
Neuromuscular Blocking Agents
Neuromuscular Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Neuromuscular Depolarizing Agents