AIM:It is well known that colonoscopy can be difficult due to @entity490 induced during colonoscope insertion, if sedative agents are not given. Recently, an extra-flexible, small-diameter colonoscope (CF-SV, Olympus Inc.Japan) was developed in order to improve safety and comfort. The aim of this study was to access the usefulness of the CF-SV.METHODS:One hundred @entity1 undergoing sigmoidoscopy were recruited and colonoscopy was performed by one experienced colonoscopist. First, a routine type colonoscope (CF-230I) was inserted into the colon without sedation. When the @entity1 complained of @entity490 (even if mild), the scope was not advanced further and was withdrawn after the anatomic location of its tip was determined fluoroscopically. Then, the CF-SV was inserted until it reached the cecun or the site where @entity490 occurred. Previous abdominal surgery and abdominal disease were considered as unfavorable factors (UF) and the relationship between @entity490 and UF, age and gender were investigated.Furthermore, the colonic insertion pressures in 36 @entity1 with @entity490 were measured with a force gauge.RESULTS:Thirty-four cases (34%) felt no @entity158 with the CF-230I and successful pancolon-oscopies to the cecum were performed. Sixty-six cases (66%) complained of @entity490 . The procedure was painless for 47% of @entity1 and 24% of @entity1 , respectively. The CF-230I scope failed to reach the sigmoid-descending colon junctions in 59 (89.4%) of the 66 @entity1 complaining of @entity490 . However, CF-SV reached proximal area in 94.9% of those who failed with CF-230I. The median pressure for @entity158 -inducing was 700g/cm(2).CONCLUSION:Unsedated @entity1 with UF were prone to complain of @entity158 when the standard type CF-230I scope was used. The newly developed extra-flexible CF-SV is useful for the aged and for those with UF or being prone to suffer from @entity490 . Sedative agents may be unnecessary if this new type of colonoscope is used.

Does flexible small-diameter colonoscope reduce insertion XXXX during colonoscopy?

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'patient', 'men'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain'] @entity490 :: ('MESH:D015746', 'Disease') :: ['abdominal pain']
@entity158 :: (MESH:D010146,Disease) :: ['pain']
