Boston Bowel Preparation Scale

Score each segment after all cleaning manoeuvres (washing and suction) have been done.

Right colon (caecum and ascending colon)0: unprepared, mucosa not seen because of solid stool that cannot be cleared(0)1: portions of mucosa seen, but other areas not well seen because of staining, residual stool or opaque liquid(+1)2: minor residual staining, small fragments of stool or opaque liquid, but mucosa well seen(+2)3: entire mucosa well seen, with no residual staining, stool or opaque liquid(+3)

Transverse colon (including the flexures)0: unprepared, mucosa not seen because of solid stool that cannot be cleared(0)1: portions of mucosa seen, but other areas not well seen because of staining, residual stool or opaque liquid(+1)2: minor residual staining, small fragments of stool or opaque liquid, but mucosa well seen(+2)3: entire mucosa well seen, with no residual staining, stool or opaque liquid(+3)

Left colon (descending, sigmoid and rectum)0: unprepared, mucosa not seen because of solid stool that cannot be cleared(0)1: portions of mucosa seen, but other areas not well seen because of staining, residual stool or opaque liquid(+1)2: minor residual staining, small fragments of stool or opaque liquid, but mucosa well seen(+2)3: entire mucosa well seen, with no residual staining, stool or opaque liquid(+3)

Enter the values above.

References

Lai EJ, Calderwood AH, Doros G, et al. The Boston bowel preparation scale: a valid and reliable instrument for colonoscopy-oriented research. Gastrointest Endosc. 2009;69(3 Pt 2):620-625.

Calderwood AH, Schroy PC 3rd, Lieberman DA, et al. Boston Bowel Preparation Scale scores provide a standardized definition of adequate for describing bowel cleanliness. Gastrointest Endosc. 2014;80(2):269-276.