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Transcranial Direct Current Stimulation (tDCS) As A Treatment For Cigarette Craving and Cognitive Deficits in Schizophrenic (TDCSSCHIZ)

27. august 2017 opdateret af: Robert C. Smith MD PhD, Nathan Kline Institute for Psychiatric Research

This is a study of the effects of tDCS on smoking, craving for cigarettes, cognition, and psychiatric symptoms in schizophrenic patients who are current smokers or have a history of regular cigarette smoking. It assesses smoking with CO monitoring, nicotine and nicotine levels, and craving with QSU scale and response to craving slides. Cognition is measured by MCCB, symptoms are measured by PANSS and hallucination scale.

This is a double-blind sham-controlled study with active tDCS 2ma or 20 minutes over 5 days, and sham tDCS for 40 seconds on each sham occasion.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

33

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • New York
      • Orangeburg, New York, Forenede Stater, 10962
        • Nathan Kline Institute for Psychiatric Research

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 60 år (Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Diagnosis of schizophrenia spectrum disorder History of cigarette smoking

Exclusion Criteria:

  • Seizure disorder or current treated neurological illness Current Acute exacerbation of psychotic state

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Active tDCS
tDCS 2 ma for 20 minutes with anode at DLPFC once a day for 5 days
Enhed: tDCS
Transcranial Direct Current Stimulation
Sham-komparator: Sham tDCS
tDCS 2 ma for 40 seconds with anode at DLPFC for 5 days
Enhed: tDCS
Transcranial Direct Current Stimulation

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change From Baseline in Cigarette Craving
Tidsramme: Baseline and after 5 tDCs sessions (mean time 8.7[SD 2.7] days after basleine)
The Brief Questionnaire on Smoking Urges (QSU-Brief) was used to measure cigarette cravings. Scores ranged from a minimum of 1 ("Strongly Disagree") to a maximum of 7 ("Strongly Agree") and were determined by self-reported responses to 10 statements about having cravings for smoking. Scores closer to 1 after treatment would indicate a better outcome. Responses to each of the 10 items in the scale were summed for one total score. With 10 items on this scale with a range of scores from 1 to 7, on each occasion of rating the minimum score would be 7 and the maximum score would be 70.
Baseline and after 5 tDCs sessions (mean time 8.7[SD 2.7] days after basleine)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change From Baseline in Cognitive Performance
Tidsramme: Baseline and 1-3 days (mean 1.8 [SD 1.4] days after 5 tDCS sessions( mean 8.7 days after baseline)
The MATRICS Consensus Cognitive Battery (MCCB) was used to measure cognitive performance. Seven Domain scores and a Composite score are calculated by the proprietary MCCB Computer Scoring Program from raw scores on 10 individually administered subtests. We used the revised MCCB program (beta version) which allows for calculation of Domain and Composite scores with missing data. The Domain T-scores are percentile-ranked and range from <20 (<0.1 percentile) to >80 (>99.9 percentile). The Composite scores are also percentile-ranked and range from <213 (T<20, <0.1 percentile) to >487 (T>80, >99.9 percentile). Higher scores after baseline represent better outcomes. Here we report difference scores from post-treatment and baseline with positive difference scores representing better outcomes.
Baseline and 1-3 days (mean 1.8 [SD 1.4] days after 5 tDCS sessions( mean 8.7 days after baseline)

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change From Baseline in Psychiatric Symptoms
Tidsramme: Baseline and after 5 tDCS sessions
The Positive and Negative Syndrome Scale (PANSS) was used to measure psychiatric symptoms. Item scores ranged from 1 (Absent) to 6 (Severe) for symptoms on the Positive Scale (total subscale range: 7-42), the Negative Scale (total subscale range: 7-42), and the General Psychopathology Scale (total subscale range:16-96). All three subscales were summed for the PANSS total score (total scale range: 30-180). Scores closer to 30 after baseline represented better outcomes. Here we report difference scores from post-treatment and baseline with negative difference scores representing better outcomes.
Baseline and after 5 tDCS sessions

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Nathan Kline Institute for Psychiatric Research

Efterforskere

  • Ledende efterforsker: Robert C Smith, MD, Nathsan Kline Institute for Psychiatric Research

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. april 2012

Primær færdiggørelse (Faktiske)

1. december 2016

Studieafslutning (Faktiske)

1. december 2016

Datoer for studieregistrering

Først indsendt

26. april 2014

Først indsendt, der opfyldte QC-kriterier

29. april 2014

Først opslået (Skøn)

1. maj 2014

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

30. august 2017

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

27. august 2017

Sidst verificeret

1. august 2017

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 309320

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med tDCS

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Betingelser

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