- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT00234650
Adenoma Detection Rate With Position Change at Colonoscopy
Evaluation of the Effect of Position Change During the Withdrawal Phase of Colonoscopy on Adenoma Detection Rate
The hypothesis to be tested is that position changes during the withdrawal phase of colonoscopy leads to a higher adenoma (polyp) detection rate because of better distension of the colon. Since adenomas are precancerous lesions the enhanced adenoma detection will increase the success of colorectal cancer screening programmes. This study will provide evidence for the value of position changes and encourage endoscopist to adopt position change as a routine in their practice.
May 2007: protocol amendment to include additional prospective analysis using High Definition TV (HDTV).
Panoramica dello studio
Descrizione dettagliata
Colorectal cancer is the second commonest cause of cancer death. In a majority of cases it is preceded by a precancerous lesion called an adenoma (commonly known as polyp). Detection and removal of adenomas at colonoscopy has been shown to reduce mortality from colorectal cancer. The success of the impending colorectal cancer screening programme to reduce cancer mortality in an average-risk population depends on optimal adenoma detection at colonoscopy. The detection of adenomas has been shown to vary between different endoscopist. Some of the factors that have been reported to affect adenoma detection rates included the time spent viewing, the adequacy of the bowel preparation and the time spent cleaning the colonic mucosa of excess fluid. Careful examination of proximal side of flexures, folds and valves by the endoscopist is equally important. However, even with careful examination adenoma detection rates have been shown to vary between endoscopist from 8.6% to 15.9%. Previous experience and training may be contributed to this difference. Some endoscopist adopt regular changes in position during the procedure to maximize distension of the colon. Better luminal distension enhances mucosal views for detection of the smaller adenomas. The validity of this approach has never been tested and we propose that this factor may contribute to the differences in adenoma detection rates.
Patients will be randomised to either position 1 first then position 2 or vice versa and examined twice. During one withdrawal the colon will be examined with the participant in the left lateral position only (position 1) or with position changes (position 2)or vice versa.
May 2007: protocol amendment to include additional prospective analysis using High Definition TV (HDTV). No further patient data collection involved.
Tipo di studio
Iscrizione (Anticipato)
Fase
- Non applicabile
Contatti e Sedi
Luoghi di studio
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Middlesex
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London, Middlesex, Regno Unito, HA1 3UJ
- North West London NHS Trust
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Patients referred ot colonoscopy, age between 50 - 70 years
Exclusion Criteria:
- Patients with colorectal cancer, previous colonic surgery, active colitis and musculoskeletal problems Patients may also be excluded after the first insertion, if painful, routine care will proceed
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Diagnostico
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione incrociata
- Mascheramento: Separare
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
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adenoma detection rate for position 1 compared to position 2
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Misure di risultato secondarie
Misura del risultato |
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percentage of adenomas detected in all the participants for each position
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Collaboratori e investigatori
Investigatori
- Investigatore principale: Brian Saunders, MD, St Mark's Hospital, North West London NHS Trust
Pubblicazioni e link utili
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Studia le date principali
Inizio studio
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- 05/CO05/15
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .