18 and older, any sex, with Anesthesia, General. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Time From Start of MK-8616 Administration to Recovery of the T4/T1 Ratio to 0.9Primary· Up to approximately 30 minutes following administration of study treatment
Mean time from start of MK-8616 administration to recovery of participant T4/T1 ratio to 0.9 was assessed through the repeated application (every 15 seconds) of an electrical stimulation protocol. Specifically, 4 electrical stimulations were applied to the ulnar nerve and the magnitude of the twitch response of the adductor pollicis muscle (i.e. thumb twitch response) was assessed. With T4 and T1 referring to the respective magnitude of the fourth and first thumb twitch during nerve stimulation, the T4/T1 ratio indicates the current degree of neuromuscular blockade (NMB) present in the partici
Group
Value
95% CI
Sugammadex
2.32
± 2.15
Time From Start of MK-8616 Administration to Recovery of the T4/T1 Ratio to 0.7Secondary· Up to approximately 10 minutes following administration of study treatment
Mean time from start of MK-8616 administration to recovery of participant T4/T1 ratio to 0.7 was assessed through the repeated application (every 15 seconds) of an electrical stimulation protocol. Specifically, 4 electrical stimulations were applied to the ulnar nerve and the magnitude of the twitch response of the adductor pollicis muscle (i.e. thumb twitch response) was assessed. With T4 and T1 referring to the respective magnitude of the fourth and first thumb twitch during nerve stimulation, the T4/T1 ratio indicates the current degree of neuromuscular blockade (NMB) present in the partici
Group
Value
95% CI
Sugammadex
1.50
± 1.07
Time From Start of MK-8616 Administration to Recovery of the T4/T1 Ratio to 0.8Secondary· Up to approximately 15 minutes following administration of study treatment
Mean time from start of MK-8616 administration to recovery of participant T4/T1 ratio to 0.8 was assessed through the repeated application (every 15 seconds) of an electrical stimulation protocol. Specifically, 4 electrical stimulations were applied to the ulnar nerve and the magnitude of the twitch response of the adductor pollicis muscle (i.e. thumb twitch response) was assessed. With T4 and T1 referring to the respective magnitude of the fourth and first thumb twitch during nerve stimulation, the T4/T1 ratio indicates the current degree of neuromuscular blockade (NMB) present in the partici
Group
Value
95% CI
Sugammadex
1.80
± 1.37
Clinical Assessment of Recovery - Participant's Level of ConsciousnessSecondary· Up to 24 hours
The quality of recovery was assessed by asking the participant 40 questions from a validated Quality of Recovery Questionnaire (QoR-40). Participants were assessed for level of consciousness (i.e., awake and oriented, arousable with minimal stimulation, responsive only to tactile stimulation), if applicable, by asking their name, if they are aware of where they are, and what day it is. Assessment 1 occurred prior to transfer to the recovery room after extubation and Assessment 2 occurred prior to discharge from the recovery room.
Awake and oriented - Assessment 1
Group
Value
95% CI
Sugammadex
138
Awake and oriented - Assessment 2
Group
Value
95% CI
Sugammadex
184
Arousable with minimal stimulation - Assessment 1
Group
Value
95% CI
Sugammadex
51
Arousable with minimal stimulation - Assessment 2
Group
Value
95% CI
Sugammadex
12
Responsive only to tactile stimulation - Assess. 1
Group
Value
95% CI
Sugammadex
8
Responsive only to tactile stimulation - Assess. 2
Group
Value
95% CI
Sugammadex
0
Clinical Assessments of Recovery - Participant Able to Perform 5-second Head Lift (5SHL)Secondary· Up to 24 hours
5-second head lift test was assessment of the ability of the participant to lift the head for 5 seconds and was performed by a blinded safety assessor. Tests were repeated every 15 minutes until the participant could successfully perform the 5-second head-lift. Assessment 1 occurred prior to transfer to the recovery room after extubation and Assessment 2 occurred prior to discharge from the recovery room.
Able to perform 5SHL during Assessment 1
Group
Value
95% CI
Sugammadex
173
Able to perform 5SHL during Assessment 2
Group
Value
95% CI
Sugammadex
196
Clinical Assessments of Recovery - Check for General Muscle Weakness (GMW)Secondary· Up to 24 hours
General muscle weakness check was assessed by the investigator. The assessment of general muscle weakness was based on a scale from 0-10, with 0 representing total paralysis, 1 signifying extreme impairment, 9 for close to no impairment, and 10 for normal muscle strength. Scores of 3, 4, 5, etc. denoted increasing muscle strength in approximately 10% increments. Scores of 9 and lower were denoted as GMW. Assessment 1 occurred prior to transfer to the recovery room after extubation and assessment 2 occurred prior to discharge from the recovery room.
GMW present during Assessment 1
Group
Value
95% CI
Sugammadex
4
GMW present during Assessment 2
Group
Value
95% CI
Sugammadex
9
Adverse events — posted to ClinicalTrials.gov
Time frame: Up to 7 days after study drug administration.
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
The primary purpose of the study is to determine the time-course of recovery to a T4/T1 ratio of 0.9 within 4 minutes after 4.0 mg.kg\^-1 Sugammadex is administered at least 15 minutes after the last administration of rocuronium in a wide range of surgical procedures and anesthetic regimens (routine use). Safety evaluation is part of the study.
Publications & conference data
1 peer-reviewed publication reference this trial (live from Europe PMC):
NCT07477132 — A Dose-response Study to Determine the Right Dosage of Sugammadex as a Reversal Agent of Rocuronium in Infants Between 1
· Phase 4
· not yet recruiting
NCT07271875 — Neuromuscular Blocking Agents on Gastrointestinal Function Following Colorectal Surgery
· Phase 3
· not yet recruiting
NCT07309393 — Impact of Sugammadex Versus Neostigmine on Early Postoperative Pulmonary Function
· NA
· recruiting
NCT07203287 — Risk of Acute Complications With Rocuronium vs Cisatracurium in Patients With Chronic Kidney Disease
· Phase 4
· recruiting
NCT06575036 — Sugammadex Dose Finding Under Two Years Old
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Merck Sharp & Dohme LLC
Last refreshed: 27 March 2019
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT00298831.