- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT00405977
The Effect of Magnesium Sulphate on the Time Course of Rocuronium Induced Neuromuscular Block (MagRoc)
The Effect of Magnesium Sulphate on the Time Course of Rocuronium Induced Neuromuscular Block - A Randomised Electrophysiology Study
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
In a previous study pre-treatment with intravenous MgSO4 60 mg kg-1 was not shown to have any impact on the onset of action of rocuronium [Kussmann et al, 1997]. Yet, in that study, MgSO4 was injected as a bolus after induction of anaesthesia, one minute only before the injection of the neuromuscular blocking agent. We suppose that magnesium needs some time to penetrate the neuromuscular endplate and to shift the Mg/Ca ratio in favor of magnesium. Thus, the particular design of the previous study may explain why magnesium had no scope to enhance the speed of onset of action of rocuronium.
The aim of our study is to investigate whether an optimised pre-treatment with magnesium (short infusion rather than bolus injection; reasonable delay between administration of magnesium and subsequent injection of the neuromuscular blocking agent) enhances the speed of onset of a standard intubation dose of rocuronium.
Preanaesthetic preparation
- Solid food and liquid intake will not be allowed for a minimum of six hours before induction
- Patients will be premedicated with 7.5 mg oral midazolam 45 min prior to induction
- Standard monitoring will consist of: ECG, SaO2, ETCO2, non-invasive blood pressure, rectal or oesophageal T°
Study drug administration
- Intravenous infusion of the study solution, 1 ml per kg bodyweight, corresponding to MgSO4 60 mg kg-1 in the magnesium group. The infusion will be given with an Infusomat during 15 minutes.
Induction and maintenance of anaesthesia
- At the end of the study drug infusion, and after a preoxygenation period of three minutes, anaesthesia will be induced with sufentanil 0.2µg kg-1 and propofol, using a Target Controlled Infusion (TCI) system (Base Primea, Fresenius-Vial, Brezins, France) and the pharmacokinetic model of Schnider et al [Schnider et al, 1999]. The initial effect site concentration will be 4 µg ml-1.
- Maintenance of anaesthesia will be with a propofol effect site
Neuromuscular monitoring
- Neuromuscular function will be monitored using the TOF Watch® SX (NV Organon) and TOF nerve stimulation. The guidelines for good clinical research practice in pharmacodynamic studies of NMBAs will be followed.
- The ulnar nerve is stimulated through surface electrodes, and the adductor pollicis muscle response is measured.
- After the stabilisation period, rocuronium 0.6 mg kg-1 (2 x ED95) will be injected intravenously during 5 seconds.
- The trachea will be intubated after a 95% depression of the first twitch
5.1. Neuromuscular measurements
- Onset time = time from beginning of injection of rocuronium until a 95% depression of the first twitch (T1).
- Duration 25% = time from beginning of injection of rocuronium until 25% T1 recovery.
- Recovery index T25-75 = time between 25% T1 recovery and 75% T1 recovery.
- Clinical recovery T25 - 0.9 = time between 25% T1 recovery and TOF ratio (T1/T4) of 0.9 (corresponding to safe extubation condition).
5.2. Haemodynamics
- Blood pressure
- Heart rate These measurements will be done before (baseline), and at 5-minute intervals during the study drug infusion. Before and immediately after tracheal intubation, haemodynamic measurements will be repeated.
5.3. Adverse events, safety
- Any minor adverse event (no need for intervention) or major adverse events will be recorded.
Studietyp
Inskrivning (Faktisk)
Fas
- Fas 4
Kontakter och platser
Studieorter
-
-
Canton of Geneva
-
Geneva, Canton of Geneva, Schweiz, 1211
- University Hospital of Geneva, Anesthesia Department
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Beskrivning
Inclusion Criteria:
- American Society of Anaesthesiology (ASA) status I or II
- Adults, aged 18 years to 60 years
- Scheduled for elective surgery lasting longer than 120 min without need for continuous curarisation
Exclusion Criteria:
- A history of allergy or hypersensitivity to rocuronium
- Neuromuscular disease
- Preoperative medications known to influence neuromuscular function (for instance, certain antibiotics and anticonvulsants)
- Electrolyte abnormalities
- Hepatic or renal insufficiency
- Patients with a body mass index <19 or >28 kg m2
- Pregnant or breastfeeding women
- Expected difficult intubation or mask ventilation
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Behandling
- Tilldelning: Randomiserad
- Interventionsmodell: Enskild gruppuppgift
- Maskning: Fyrdubbla
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
---|---|
Placebo-jämförare: Fysiologisk koksaltlösning
|
Intravenous infusion of the study solution, 1 ml per kg bodyweight, corresponding to MgSO4 60 mg kg-1 in the magnesium group and 1 ml per kg physiological saline.
The infusion will be given with during 15 minutes.
|
Aktiv komparator: Magnesium sulphate
|
Intravenous infusion of the study solution, 1 ml per kg bodyweight, corresponding to MgSO4 60 mg kg-1 in the magnesium group.
The infusion will be given during 15 minutes.
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
To study whether a pre-treatment with MgSO4, 60 mg kg-1, administered as an intravenous infusion 15 minutes prior to induction enhances the speed of onset of a standard intubation dose of rocuronium
Tidsram: 1 to 5 minutes
|
Onset time ist the time in seconds from start of injection of rocuronium until 95% depression of the first twitch (T1) of the Train of four (TOF)
|
1 to 5 minutes
|
Sekundära resultatmått
Resultatmått |
Tidsram |
---|---|
To study whether, and to what extent, pre-treatment with MgSO4 prolongs recovery characteristics of the neuromuscular block that is induced by rocuronium
Tidsram: minutes to hours
|
minutes to hours
|
To study possible haemodynamic effects of pre-treatment with MgSO4.
Tidsram: hours
|
hours
|
Samarbetspartners och utredare
Sponsor
Utredare
- Huvudutredare: Christoph A Czarnetzki, MD, MBA, University Hospital of Geneva, Anesthesia Department
- Studiestol: Martin Tramer, MD, PhD, University Hospital of Geneva, Anesthesia Department
Publikationer och användbara länkar
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
- Läkemedels fysiologiska effekter
- Molekylära mekanismer för farmakologisk verkan
- Medel mot arytmi
- Depressiva medel i centrala nervsystemet
- Agenter från det perifera nervsystemet
- Analgetika
- Sensoriska systemagenter
- Bedövningsmedel
- Membrantransportmodulatorer
- Antikonvulsiva medel
- Kalciumreglerande hormoner och medel
- Reproduktionskontrollmedel
- Kalciumkanalblockerare
- Tokolytiska medel
- Magnesiumsulfat
Andra studie-ID-nummer
- CER 05-055
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .
Kliniska prövningar på Neuromuskulär blockad
-
Kafrelsheikh UniversityAvslutadAnalgesi | Erector Spinae Plane Block | Quadratus Lumborum Block | Paravertebralt blockEgypten
-
Tanta UniversityOkändKonventionellt kaudalt block | Ultraljudsstyrt kaudalt block | Ultraljudsguided Erector Spinae Block | Pediatrisk höftkirurgiEgypten
-
Tanta UniversityHar inte rekryterat ännuInterscalene Block | Ytligt cervikalt blockEgypten
-
Kreiskrankenhaus DormagenAvslutadNeuromuskulärt block, dexametason | Neuromuskulärt block, återhämtningTyskland
-
Tanta UniversityRekryteringErector Spinae Plane Block | Artroskopi | Interscalene BlockEgypten
-
The General Authority for Teaching Hospitals and...AvslutadKejsarsnitt | Quadratus Lumborum Block | Transversus Abdominis Plane BlockEgypten
-
University of Wisconsin, MadisonAvslutadRegionalt block för smärtkontroll | Supraklavikulärt block | Ultraljudsguidad block | BlocktillsatsFörenta staterna
-
Tanta UniversityAvslutadTotal knäprotesplastik | Popliteal Plexus Block | Fascia Iliaca BlockEgypten
-
Zagazig UniversityAvslutadPerikapsulär nervgruppsblock (PENG-block) | Lumbal Erector Spinae Plane BlockEgypten
-
Tanta UniversityAvslutadCaudal Block | Pediatrik | Sacral Erector Spinae Plane Block | PenisoperationerEgypten
Kliniska prövningar på Physiologic saline
-
Frederiksberg University HospitalAvslutad
-
Universitaire Ziekenhuizen KU LeuvenAvslutadFriska volontärerBelgien
-
Imperial College LondonNottingham University Hospitals NHS Trust; Royal Brompton & Harefield NHS... och andra samarbetspartnersHar inte rekryterat ännuCerebral pares | Neuromuskulära sjukdomar | Neuropsykiatriska funktionsnedsättningarStorbritannien
-
M.D. Anderson Cancer CenterNational Cancer Institute (NCI); National Institutes of Health (NIH)Avslutad
-
Tissue Tech Inc.IndragenArtros: LedersättningskirurgiFörenta staterna
-
North Park PodiatryRekrytering
-
Washington University School of MedicineMid-America TransplantAvslutad
-
Macarena Hernández JiménezCentro para el Desarrollo Tecnológico IndustrialAvslutad
-
Beijing Tiantan HospitalAvslutadSugammadex | Motor framkallade potentialerKina
-
Danish Headache CenterAvslutad