TY - JOUR
T1 - Impact of endoscopist withdrawal speed on polyp yield
T2 - Implications for optimal colonoscopy withdrawal time
AU - Simmons, D. T.
AU - Harewood, G. C.
AU - Baron, T. H.
AU - Petersen, B. T.
AU - Wang, K. K.
AU - Boyd-Enders, F.
AU - Ott, B. J.
PY - 2006/9
Y1 - 2006/9
N2 - Background: In 2002, a U.S. Multi-Society Task Force on Colorectal Cancer recommended that the withdrawal phase for colonoscopy should average at least 6-10 min. This was based on 10 consecutive colonoscopies by two endoscopists with different adenoma miss rates. Aims: To characterize the relationship between endoscopist withdrawal time and polyp detection at colonoscopy, and to determine the withdrawal time that corresponds to the median polyp detection rate. Design: Procedural data from out-patient colonoscopies performed at the Mayo Clinic, Rochester during 2003 were reviewed. Endoscopists were characterized by their mean withdrawal time for a negative procedure and individual polyp detection rate. Results: A total of 10 955 colonoscopies performed by 43 endoscopists were analysed. Median withdrawal time was 6.3 min (range: 4.2-11.9); polyp detection rate was 44.0% (all polyps), 29.8% (≤5 mm), 5.9% (6-9 mm), 6.7% (10-19 mm), 2.1% (≥20 mm). Longer withdrawal time was associated with higher polyp detection rate (r = 0.76; P < 0.0001); this relationship weakened for larger polyps (r = 0.19 for polyps 6-9 mm, r = 0.28 for polyps 10-19 mm, r = 0.02 for polyps ≥20 mm). Overall median polyp detection rate corresponded to a withdrawal time of 6.7 min. Conclusion: Our findings support a colonoscopy withdrawal time of at least 7 min, which correlates with higher colon polyp detection rates.
AB - Background: In 2002, a U.S. Multi-Society Task Force on Colorectal Cancer recommended that the withdrawal phase for colonoscopy should average at least 6-10 min. This was based on 10 consecutive colonoscopies by two endoscopists with different adenoma miss rates. Aims: To characterize the relationship between endoscopist withdrawal time and polyp detection at colonoscopy, and to determine the withdrawal time that corresponds to the median polyp detection rate. Design: Procedural data from out-patient colonoscopies performed at the Mayo Clinic, Rochester during 2003 were reviewed. Endoscopists were characterized by their mean withdrawal time for a negative procedure and individual polyp detection rate. Results: A total of 10 955 colonoscopies performed by 43 endoscopists were analysed. Median withdrawal time was 6.3 min (range: 4.2-11.9); polyp detection rate was 44.0% (all polyps), 29.8% (≤5 mm), 5.9% (6-9 mm), 6.7% (10-19 mm), 2.1% (≥20 mm). Longer withdrawal time was associated with higher polyp detection rate (r = 0.76; P < 0.0001); this relationship weakened for larger polyps (r = 0.19 for polyps 6-9 mm, r = 0.28 for polyps 10-19 mm, r = 0.02 for polyps ≥20 mm). Overall median polyp detection rate corresponded to a withdrawal time of 6.7 min. Conclusion: Our findings support a colonoscopy withdrawal time of at least 7 min, which correlates with higher colon polyp detection rates.
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U2 - 10.1111/j.1365-2036.2006.03080.x
DO - 10.1111/j.1365-2036.2006.03080.x
M3 - Article
C2 - 16948808
AN - SCOPUS:33748301969
SN - 0269-2813
VL - 24
SP - 965
EP - 971
JO - Alimentary Pharmacology and Therapeutics
JF - Alimentary Pharmacology and Therapeutics
IS - 6
ER -