Impact of a transparent hood on the performance of total colonoscopy: a randomized controlled trial

Harada, Yoshihiro; Hirasawa, Dai; Fujita, Naotaka; Noda, Yutaka; Kobayashi, Go; Ishida, Kazunari; Yonechi, Makoto; Ito, Kei; Suzuki, Takashi; Sugawara, Toshiki; Horaguchi, Jun; Takasawa, Osamu; Obana, Takashi; Oohira, Tetsuya; Onochi, Kengo; Kanno, Yoshihide; Kuroha, Masatake; Iwai, Wataru

doi:10.1016/j.gie.2008.08.029

Cited by 81 publications

(72 citation statements)

References 24 publications

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“…Distal = distal to the splenic flexure. definition, wide-angle endoscope 15,[21][22][23][24][25] ; narrow band imaging [26][27][28] ; transparent hood attached to the tip of the colonoscope 26,29,30 withdrawal time >6 min 31,32 or modified (e.g. split-dose) bowel preparation 33,34 .…”

Section: Discussionmentioning

confidence: 99%

The water method combined with chromoendoscopy enhances adenoma detection

Leung¹,

Ransibrahmanakul²,

Toomsen³

et al. 2011

jig

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Background:The water method is easy-to-learn and improves colonoscopy outcomes. Dye-spray chromoendoscopy enhances ADR but has not been widely accepted for routine application in screening or surveillance colonoscopy. Hypothesis: With dye added to the water used in the water method, ADR can be enhanced compared with the water or air method alone. Objective: To compare ADR determined by the air method, water method alone, and water method with indigo carmine (0.008%) added. Design: Review of prospectively collected data in a performance improvement program. Setting: VA endoscopy unit. Patient: Screening or surveillance colonoscopy. Methods: Patients (n=50/group) underwent colonoscopy with each of the three methods. Water method involved warm water infusion in lieu of air insufflation coupled with removal of residual air by suction and residual feces by water exchange. ADR and procedural data were collected prospectively to monitor performance. Main Outcome Measurements: ADR. Results: ADR in the air method, water method alone and water method with indigo carmine were 36%, 40% and 62%, respectively. Water method with indigo carmine produced significantly higher ADR than the air or water method alone (p<0.05). Limitations: Non-randomized data, single VA site, retrospective comparison. Absence of significant difference between air and water methods could be a type II error due to small number of patients Conclusions: The approach with indigo carmine added to the water used in the water method yielded significantly higher ADR than the water or the air method alone. The data suggest that a prospective RCT to compare the different methods is warranted.

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Section: Discussionmentioning

confidence: 99%

The water method combined with chromoendoscopy enhances adenoma detection

Leung¹,

Ransibrahmanakul²,

Toomsen³

et al. 2011

jig

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“…Additionally, CHAC can improve the cecal intubation success rate when regular colonoscopy has failed [23]. Even inexperienced endoscopists can achieve a significantly higher cecal intubation rate with the CHAC technique [8].…”

Section: Discussionmentioning

confidence: 99%

“…The possible drawbacks relevant to the use of a hood are difficulty cleaning the lens of the colonoscope when feces become trapped in the hood, injury to the colonic mucosa, and anal pain at insertion of the colonoscope [8]. We use a magnifying gastroscope equipped with a water-jet function, which enables us to clean off feces or mucus easily and effectively.…”

Section: Discussionmentioning

confidence: 99%

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Magnifying gastroscopy using a soft black hood for difficult colonoscopy

Nakamura

Yamamura

2011

Surg Endosc

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“…In addition, inspecting behind mucosal folds near acute bends is easier with a cap. Cap-assisted colonoscopy has been shown to improve cecal intubation rates among trainees, reduce cecal intubation time in trainees and in difficult cases [31], achieve cecal intubation when regular colonoscopy fails [32], reduce patient discomfort [33], and improve adenoma detection [31, 34••, 35].…”

Section: Cap-assisted or Hood-assisted Colonoscopymentioning

confidence: 99%

Technical Advances in Getting to the Cecum

Lau

2010

Curr Colorectal Cancer Rep

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Clinical demand for colonoscopy has increased with the introduction of colorectal cancer screening worldwide. The goal is a complete, comfortable, and high-quality procedure. Up to one third of colonoscopies are challenging, and incomplete colonoscopy occurs in 10% of cases. High cecal intubation rates can be achieved by minimizing air insufflation and looping, and by using ancillary maneuvers such as position change and abdominal pressure. In difficult cases, changing to a non-standard endoscope, the use of magnetic endoscopic imaging, and endoscopic accessories including a transparent cap or an overtube can be an effective measure. The use of carbon dioxide instead of air insufflation reduces post-procedure discomfort. A new technique involving water immersion in lieu of air insufflation may reduce discomfort and facilitate insertion to the cecum. Data from alternative novel colonoscopy platforms including capsule colonoscopy, Neoguide, Invendoscope, and the Aer-O-scope appear promising, and prospective clinical studies are warranted.

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Impact of a transparent hood on the performance of total colonoscopy: a randomized controlled trial

Cited by 81 publications

References 24 publications

The water method combined with chromoendoscopy enhances adenoma detection

The water method combined with chromoendoscopy enhances adenoma detection

Magnifying gastroscopy using a soft black hood for difficult colonoscopy

Technical Advances in Getting to the Cecum

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