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- Klinische proef NCT01233219
Association Between Clinical Effect of Continuous Morphine Administration After Surgery and Pharmacogenetics
Association Between Clinical Effect of Continuous Morphine Administration in Patients After Major Surgery and Pharmacogenetics: Perspective Observational Clinical Study
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
Studietype
Contacten en locaties
Studie Locaties
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Pavia, Italië, 27100
- Fondazione IRCCS Policlinico San Matteo
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion criteria:
- Males and females over 18 years, under 75 years, scheduled for postoperative pain control with continuous morphine administration
- HIV negative
- Classification American Society of Anesthesiologists (ASA) I: without systemic disease
- Classification ASA II or III (mild systemic disease or severe systemic disease that limits the activity without invalidity).
- Undergoing abdominal and urologic major surgery (neither urgent nor emergency surgery)
- Signed informed consent
Exclusion criteria:
- Usual assumption of analgesic opioids
- Cognitive alterations nor mental retardation
- Severe hepatic/renal insufficiency (cholinesterase <3000 mU/ml, total bilirubinaemia <2 mg/dl and creatininaemia <1.2 mg/dl)
- Inpatients in intensive therapy, either with sedation and/or mechanic ventilation.
- Allergies to morphine and derivates
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
Interventie / Behandeling |
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Group A
Homozygous patients for the more frequent allele of the polymorphism A118G of OPRM1 gene
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The drug will be administrated by a bolus 45 minutes before the end of the surgery, with the following modalities: bolus with morphine chlorhydrate 0.15 mg/kg ± 20%. Also acetaminophene 1g and ketoprofen 160 mg (ketorolac 30mg) will be administrated during the operation. At the exit of the operative compartment patients will have an continuous infusion for 48h with morphine chlorhydrate 0,02 mg/kg/h. Moreover, a rescue dose therapy will be prescribed with ketoprofen 160 mg or ketorolac 30mg (in case of allergy acetaminophene 1g) if NRS<4 maximum x 3 daily. Postoperative analgesic treatment is lasting 48h for each patient (between starting of the infusion (T0) and the following 48h).
Andere namen:
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Group B
Both homozygous and heterozygous patients for the less frequent allele of the polymorphism A118G of OPRM1 gene
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The drug will be administrated by a bolus 45 minutes before the end of the surgery, with the following modalities: bolus with morphine chlorhydrate 0.15 mg/kg ± 20%. Also acetaminophene 1g and ketoprofen 160 mg (ketorolac 30mg) will be administrated during the operation. At the exit of the operative compartment patients will have an continuous infusion for 48h with morphine chlorhydrate 0,02 mg/kg/h. Moreover, a rescue dose therapy will be prescribed with ketoprofen 160 mg or ketorolac 30mg (in case of allergy acetaminophene 1g) if NRS<4 maximum x 3 daily. Postoperative analgesic treatment is lasting 48h for each patient (between starting of the infusion (T0) and the following 48h).
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Assessment of the rescue doses in the two groups homozygous patients for the more frequent allele of the polymorphism A118G of OPRM1 gene; group B: both homozygous and heterozygous patients for the less frequent allele
Tijdsspanne: first 24 h after surgery
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Valuation of the rescue doses necessary to maintain NRS<4 in the first 24 hours post-surgery in the two groups of patients, A e B. Group A: homozygous patients for the more frequent allele of the polymorphism A118G of OPRM1 gene (about 80%); group B: both homozygous and heterozygous patients for the less frequent allele (about 20%).
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first 24 h after surgery
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Varianten op de loci OPRM1, COMT, UGT's, ESR1, richting mediane pijnmeting
Tijdsspanne: gedurende 24 uur na de operatie
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Frequentie van de varianten op de loci OPRM1, COMT, UGT's, ESR1, zowel bij patiënten met NRS ≤4 als bij patiënten met NRS >4, minstens één keer gedurende 24 uur.
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gedurende 24 uur na de operatie
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Variants at the loci OPRM1, COMT, UGTs, ESR1,towards median pain measure
Tijdsspanne: period between 24 - 48 h postsurgery
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Frequency of the variants at the loci OPRM1, COMT, UGTs, ESR1, both in patients with NRS ≤4 and in those having NRS >4 at least once during the period between 24-48 hours postsurgery.
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period between 24 - 48 h postsurgery
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Pharmacokinetics of morphine during continuous administration after surgery
Tijdsspanne: 48 h after surgery
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Pharmacokinetic study of both morphine and its principal active and/or toxic metabolites (M3G and M6G).
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48 h after surgery
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Detection of the possible side effects.
Tijdsspanne: 72 h postopratively
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Detection of the possible side effects after continuous morphine administration
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72 h postopratively
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Detection of the association between M3G/M6G ratio and polymorphisms of UGTs
Tijdsspanne: within 72 h postoperatively
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Detection of the association between M3G/M6G ratio and polymorphisms of UGTs and its possible side effects.
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within 72 h postoperatively
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Hoofdonderzoeker: Massimo Allegri, MD, IRCCS Policlinico San Matteo
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Verwacht)
Studie voltooiing (Verwacht)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
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Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- PT-SM-08-MorfinaContinua-Gene
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