- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT06375278
Undersøgelse af en anordning til at levere intra-operativ terapeutisk hypotermi til bevarelse af hørelsen ved cochlear implantation
Enhed til at levere intraoperativ terapeutisk hypotermi til bevarelse af hørelsen ved cochlear implantation
Målet med denne interventionelle kliniske undersøgelse er at undersøge brugen af mild terapeutisk hypotermi til bevarelse af resterende hørelse i cochleaimplantatkirurgi. De vigtigste spørgsmål forsøget sigter mod at besvare er:
- Er mild terapeutisk hypotermi sikker til brug under cochlear implantation?
- Er mild terapeutisk hypotermi effektiv til at bevare den resterende hørelse efter cochlear implantation?
Deltagerne vil modtage mild terapeutisk hypotermibehandling under cochleaimplantatkirurgi. Forskere vil sammenligne resultater fra dem, der modtager terapien, med resultater fra en kontrolgruppe (individer, der ikke modtager terapi).
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Cochleaimplantater (CI) har dramatisk ændret behandlingen og prognosen for patienter med alvorligt til dybt sensorineuralt høretab. Med den nylige fremkomst af elektroakustisk stimulation (EAS) lover den kombinerede akustiske forstærkning ved lave frekvenser med elektrisk stimulering af højfrekvente cochleare områder at gavne patienter med selv delvis resterende hørelse ved at forbedre vanskelige lyttesituationer som tale-i-støj og musik påskønnelse. Desværre resulterer traumer forbundet med implantatoperationen i betændelse, mekanisk og vaskulær skade og tab af resterende sensoriske hårceller (HC) og neuroner. Som følge heraf mister mere end 44 % af EAS-patienter den resterende hørelse efter CI-operation, og den resterende hørelse forringes med mere end 30 dB over tid hos et flertal af patienterne. Dette tab af resterende hørelse efter CI-kirurgi har været den primære barriere for en udvidet anvendelse af CI/EAS.
Dette kliniske forsøg vil evaluere en ny mild terapeutisk hypotermianordning som en effektiv terapi til at bevare resterende hørelse efter CI. Dette system kræver ikke modifikation af den nuværende operation eller CI-enheder og vil levere lokaliseret, kontrolleret mild hypotermi til de følsomme indre ørestrukturer. Med prækliniske offentliggjorte resultater har efterforskerne allerede vist, at lokaliseret hypotermi under CI-kirurgi er yderst effektiv og sikker for resterende hørebevarelse. Her vil efterforskerne undersøge implementeringen af en terapi, der gavner patienter, der gennemgår CI ved at forbedre post-kirurgiske audiologiske resultater. Omfattende tidligere kommercialiserings- og udviklingserfaring, intellektuel ejendomsret og ingeniørekspertise kombineret med efterforskernes samarbejdspartneres kliniske ekspertise inden for Otolaryngologi og Audiologi vil sikre det vellykkede kliniske og kommercielle resultat af denne terapi.
Overordnet set er formålet med dette kliniske forsøg:
Validerer den kliniske anvendelighed, sikkerhed og effektivitet af systemet og enhedskonstruktionen til bevarelse af resterende hørelse efter CI-kirurgi. Enheden og hypotermitilførselssystemet vil blive testet på voksne patienter, der gennemgår CI-operation ved University of Miami. Til klinisk oversættelse sigter efterforskerne på at demonstrere, at anvendelsen af hypotermi kombineret med den nuværende standard for pleje til cochlear implantation til resterende hørebevarelse (steroider) er effektiv. Efterforskerne antager, at hypotermiapplikationen ikke vil påvirke CI-funktionen negativt hos patienter (sikkerhed) og vil forbedre tidlige audiologiske resultater (effektivitet) sammenlignet med den nuværende standard for pleje i CI-operationer. Efterforskerne vil anvende klinisk relevante præ-kirurgiske, intra-operative og post-kirurgiske tiltag i grupper af patienter, der modtager standardbehandling og hypotermibehandling.
Foreløbige og offentliggjorte prækliniske data og et eksisterende system og udstyr er blevet konstrueret til dette kliniske forsøg. Den foreslåede terapi og enhedsdesign til CI-operationer repræsenterer en ikke-farmaceutisk terapeutisk strategi til at bevare resterende hørelse.
Undersøgelsestype
Tilmelding (Anslået)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
- Navn: Suhrud M Rajguru, Ph.D.
- Telefonnummer: 801-641-8180
- E-mail: srajguru@restorear.com
Undersøgelse Kontakt Backup
- Navn: Curtis S King
- Telefonnummer: 406-414-6278
- E-mail: cking@restorear.com
Studiesteder
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Florida
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Miami, Florida, Forenede Stater, 33136
- Rekruttering
- University of Miami
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Kontakt:
- Suhrud M Rajguru, Ph.D.
- Telefonnummer: 8016418180
- E-mail: srajguru@restorear.com
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Kontakt:
- Sandra Prentiss, Ph.D., CCC-A
- Telefonnummer: 305-890-6059
- E-mail: S.Prentiss@med.miami.edu
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Kontakt:
- Suhrud M Rajguru, Ph.D.
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Kontakt:
- Michael Hoffer, M.D.
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Kontakt:
- Fred Telischi, M.D.
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Kontakt:
- Simon Angeli, M.D.
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Kontakt:
- Sandra Prentiss, Ph.D.
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inklusionskriterier:
Potentielle deltagere til undersøgelsen er patienter, der er blevet diagnosticeret med alvorligt til dybt høretab og planlægger at gennemgå cochlear implantation ved University of Miami. Cochleaimplantatkirurgien, præ- og postkirurgisk behandling samt aktivering og programmering af implantatet er en del af deltagernes standardbehandling. Hvis inklusionskriterierne er opfyldt (alder 18 år og ældre, lige mange mænd og kvinder, dybt sensorineuralt høretab (for sikkerhedsundersøgelse n=6) og resterende hørelse (se kriterier nedenfor) fra præ-kirurgisk ABR (for effektstudie n) =48), lige mange CI-enheder fra alle 3 producenter og engelsk- eller spansktalende, vil patienten blive kontaktet af undersøgelsens personale og vil blive bedt om at deltage i undersøgelsen.
Ekskluderingskriterier:
Forsøgspersoner under 18 år. Emner, der ikke opfylder funktionelle hørekrav.
Typer af CI-enheder:
Undersøgelsen vil inkludere patienter, der modtager CI-enheder fra alle tre producenter.
Advanced Bionics (FDA-indikationer - alvorligt til dybt sensorineuralt høretab (større end eller lig med 70 dB HL)
- HiRes Ultra 3D slim J
- HiRes Ultra 3D midScala
Cochlear Corporation (FDA-indikationer - moderat til dybt sensorineuralt høretab; sætningsgenkendelse mindre end eller lig med 50 % i øret, der skal implanteres OG mindre end eller lig med 60 % i det kontralaterale øre
- CI632
- CI622
- CI612
Med-EL (moderat-alvorligt til alvorligt sensorineuralt høretab (større end eller lig med 65 db HL).
- Synchrony 2 Flex blød
- Synchrony 2 Flex28
- Synchrony 2 Flex 24
- Synchrony 2 Komprimeret
- Synchrony 2 Medium
Yderligere patienter, der modtager enheder, der ikke er angivet her, kan være kvalificerede, da kriterierne ændres af producenten.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Dobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
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Eksperimentel: Sikkerhedsundersøgelse
Mål 1: Bestem sikkerheden af systemet og udstyret hos patienter, der gennemgår cochlear implantation (CI).
Mild terapeutisk hypotermi vil blive leveret til forsøgspersonerne under CI-kirurgi via øregangen.
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Mild terapeutisk hypotermi vil blive påført via kateterenheden installeret inde i øregangen af en erfaren kirurg under cochlear implantation (CI) operation.
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Eksperimentel: Effektivitetsundersøgelse køling
Mål 2: Bestem anvendeligheden og effektiviteten af enheden og systemet hos patienter, der gennemgår cochlear implantation (CI).
Halvdelen af kandidaterne vil modtage mild terapeutisk hypotermi via øregangen under cochleaimplantatkirurgi.
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Mild terapeutisk hypotermi vil blive påført via kateterenheden installeret inde i øregangen af en erfaren kirurg under cochlear implantation (CI) operation.
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Ingen indgriben: Kontrol af effektivitetsundersøgelse
Mål 2: Bestem anvendeligheden og effektiviteten af enheden og systemet hos patienter, der gennemgår cochlear implantation (CI).
Halvdelen af kandidaterne vil modtage standardbehandling (ingen køling) under cochleaimplantatkirurgi.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Pure Tone Audiometri
Tidsramme: Ved initial cochleaimplantataktivering eller 1 måned postoperativt; 3 og 12 måneder efter operationen
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Pure-tone gennemsnit (PTA) på 125, 250 og 500 Hz, som vil blive testet postoperativt i sikkerheds- og effektivitetsarmene for at måle resterende hørelse.
En klinisk signifikant ændring i hørelsen er større end 10 dB HL (decibels høreniveau) skift.
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Ved initial cochleaimplantataktivering eller 1 måned postoperativt; 3 og 12 måneder efter operationen
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Elektrofysiologisk impedans
Tidsramme: Umiddelbart postoperativt/under operationen; ved initial cochleaimplantataktivering/1 måned postoperativt; 3 og 12 måneder efter operationen
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I henhold til plejestandard vil elektrofysiologiske impedanser blive sammenlignet mellem grupper intra- og postoperativt for at måle CI-enhed og elektrodefunktion.
Impedanser vil blive målt i sikkerheds- og effektivitetsarmene.
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Umiddelbart postoperativt/under operationen; ved initial cochleaimplantataktivering/1 måned postoperativt; 3 og 12 måneder efter operationen
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Electrically Voked Compound Action Potential (ECAP)
Tidsramme: Umiddelbart postoperativt/under operationen; ved initial cochleaimplantataktivering/1 måned postoperativt
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I henhold til standardbehandling vil ECAP blive sammenlignet mellem grupper intra- og postoperativt for at teste CI-enhedens funktion.
ECAP vil blive målt i sikkerheds- og effektivitetsarmene.
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Umiddelbart postoperativt/under operationen; ved initial cochleaimplantataktivering/1 måned postoperativt
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Samarbejdspartnere og efterforskere
Sponsor
Publikationer og nyttige links
Generelle publikationer
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