[Factors associated with colon cleansing measured with the Boston scale in routine clinical practice].
BACKGROUND
The Boston scale is useful to standardize colon cleansing at colonoscopy. The aim of this study was to analyze the degree of preparation before colonoscopy and the factors associated with cleansing in routine clinical practice.


METHODS
We included colonoscopies performed from January to June 2013. Exclusion criteria were age <15 years, a history of colon surgery, inflammatory bowel disease, and active gastrointestinal bleeding. The standard preparation was CitraFleet. The parameters related to the degree of bowel cleansing (using the Boston scale) were age, sex, indication, colonoscopy shift (morning or afternoon), patient origin (outpatient or hospitalized), and colonoscopy findings.


RESULTS
We analyzed 947 colonoscopies, with exclusion of 297. A total of 5.8% (38/650) of the colonoscopies were incomplete, 50% due to lack of preparation. The mean age of the patients was 61.27 years (SD: 16.1), and 51.8% were women. The distribution of the Boston scale was 0-3 in 6.3%, 4-5 in 12.6%, 6-7 in 30.6%, and 8-9 in 50.4%, with a mean 7.04 (SD: 2.03). On multivariate analysis, the factors statistically associated with better preparation were younger age, afternoon colonoscopy and the outpatient setting. The percentage of polyps in patients with a Boston scale score ≤5 was 10% compared with 27.8% in patients with a score > 5 (P=.014).


CONCLUSIONS
In clinical practice, 80% of patients had an acceptable level of preparation. Older patients, those undergoing colonoscopy in the morning and hospitalized patients would be candidates for measures to improve the degree of colonic preparation.
Sección Aparato Digestivo, Hospital El Bierzo, León, España. Electronic address: rudiro81@gmail.com.
Rubén
R
Díez-Rodríguez
Sección Aparato Digestivo, Hospital El Bierzo, León, España.
Gabriela
G
Rascarachi
Servicio de Medicina Interna, Hospital El Bierzo, León, España.
Tatiana
T
Khaliulina
Sección Aparato Digestivo, Hospital El Bierzo, León, España.
Aleida
A
Miguel-Peña
Sección Aparato Digestivo, Hospital El Bierzo, León, España.
Guillermo
G
Karpman-Niuremberg
Servicio de Urgencias, Complejo Asistencial Universitario de León, León, España.
Ana
A
Barrientos-Castañeda
Servicio de Aparato Digestivo, Complejo Asistencial Universitario de León, León, España.
Begoña
B
Álvarez-Cuenllas
Servicio de Aparato Digestivo, Complejo Asistencial Universitario de León, León, España.
Santiago
S
Vivas-Alegre
D000236:Adenoma / Q000175:diagnosis; D000284:Administration, Oral; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002400:Cathartics / Q000008:administration & dosage / Q000494:pharmacology*; D002951:Citrates / Q000008:administration & dosage / Q000494:pharmacology; D019343:Citric Acid / Q000008:administration & dosage / Q000494:pharmacology; D003110:Colonic Neoplasms / Q000175:diagnosis; D003111:Colonic Polyps / Q000175:diagnosis; D003113:Colonoscopy / Q000379:methods*; D004240:Diverticulum / Q000175:diagnosis; D005260:Female; D006801:Humans; D008277:Magnesium Oxide / Q000008:administration & dosage / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds / Q000008:administration & dosage / Q000494:pharmacology; D010847:Picolines / Q000008:administration & dosage / Q000494:pharmacology; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome
D002400:Cathartics; D002951:Citrates; D009942:Organometallic Compounds; D010847:Picolines; D019343:Citric Acid; D008277:Magnesium Oxide; C005701:picosulfate sodium
Cleansing scales; Colonic preparation; Colonoscopia; Colonoscopy; Escalas de limpieza; Preparación colónica