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Evaluation the Performance of Given Diagnostic System in Detection of Bleeding Events in the Small Bowel

4. marts 2013 opdateret af: Francis KL Chan, Chinese University of Hong Kong

Evaluation the Performance of Given Diagnostic System in Detection of Bleeding Events in the Small Bowel: a Single-arm Prospective Cohort Study.

Obscure gastrointestinal bleeding (OGIB) has been one of the most challenging area in the field of gastroenterology, as small bowel is beyond the reach of ordinary endoscopes like oesophagogastroduodenoscopy (OGD) and colonoscopy. Thanks for the latest technological advancement for investigating small intestine, we are now capable of obtaining intraluminal images safely through capsule endoscopy (CE). Its role in obscure gastrointestinal bleeding, Crohn's disease and other small bowel pathologies has already been proven, and nowadays it is suggested by various authorities to be the first-line modality among all small bowel investigations.

The investigators group has showed that CE can alter the clinical management of patients with OGIB - patients with negative CE has lower rebleeding rate, and therefore we may adopt a conservative approach for them. Although supported by some other group as well, conflicting results were still reported in the literature about the out-come of these patients. The main criticisms for these studies are that, CE can only identify 61% of the underlying small bowel bleeding pathology, and one can never ascertain the outcome of patients with negative CE examination. Apparently there is still room for improvement in the current CE technology.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Newer generation of CE (PillCam ColonTM) has been developed to investigate the large bowel. It is different from small bowel CE that it consists of two cameras at both ends of the capsule, so as to enhance the coverage of colonic mucosa visualization. An improved generation of this colon capsule, named PillCam Colon 2TM, is also in its developmental phase. With the new "adaptive frame rate" (AFR) technology, the CE optimizes the visual coverage of the bowel by increasing the frame rate up to 35 frames per second when the capsule is moving quickly in certain areas, while decreasing the frame rate down to 4 frames per second when the capsule is moving slowly or remains stationary so as to conserve the battery life. Preliminary data from colorectal cancer screening has shown that it could improve the diagnostic yield of colonic polyps.

The investigators hypothesize that, by re-programming the PillCam Colon 2TM so as to initiate AFR since ingestion, it could improve the visualization of small intestinal lumen and hence improves the sensitivity of small bowel CE examination.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

6

Fase

  • Fase 2
  • Fase 3

Kontakter og lokationer

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

Studiesteder

  • Kina
      • Hong Kong, Kina
        • Prince of Wales Hospital

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 og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. Patients with overt GI bleeding (hematemesis, coffee-grounds, rectal bleeding and/or melena) with negative OGD but not critically ill, who should read positive on small bowel investigation (SBI)
  2. Patients with occult GI bleeding (Faecal occult blood test,FOBT +)
  3. Patients with suspected arteriovenous(AV) malformations.
  4. Patients treated with nonsteroidal antiinflammatory drugs (NSAIDs)
  5. Patients with active Crohn's disease(CD), with no evidence of obstruction

Exclusion Criteria:

  1. In patients with known or suspected gastrointestinal obstruction, strictures, or fistulas based on the clinical picture or pre-ingestion testing and profile.
  2. In patients with cardiac pacemakers or other implanted electromedical devices.
  3. In patients with dysphagia or other swallowing disorders.
  4. Unable to obtain informed written consent

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Colon 2
using Colon 2 capsule in detecting bleeding events in small bowel
Enhed: Colon 2
Ingest one colon 2 capsule
Andre navne:
  • C2

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Diagnostic yield for bleeding events in the small bowel
Tidsramme: 1 year
Review the capsule video to detect the bleeding events.
1 year

Samarbejdspartnere og efterforskere

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

Sponsor

Chinese University of Hong Kong

Efterforskere

  • Ledende efterforsker: Joseph JY Sung, MD, CUHK

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. januar 2011

Primær færdiggørelse (Faktiske)

1. januar 2012

Studieafslutning (Faktiske)

1. januar 2012

Datoer for studieregistrering

Først indsendt

2. august 2011

Først indsendt, der opfyldte QC-kriterier

26. september 2011

Først opslået (Skøn)

27. september 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

5. marts 2013

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

4. marts 2013

Sidst verificeret

1. marts 2013

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • C2 in SB

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 Gastrointestinal blødning

Kliniske forsøg med Colon 2

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Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Hungary

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner