La preparación del colon para colonoscopias es realizado rutinariamente en Japón con 2,000 mL de solución de limpieza. El consumo de grandes cantidades de líquido como se hace en Europa puede ser difícil para pacientes ancianos y en general incomoda a todos los pacientes. En este trabajo se deja de dar volúmenes elevados de solución de limpieza del colon (3 a 5 litros),asociado a laxantes el día previa al examen y se limitó a dar 1,000 de la solución de limpieza (Magcorol P®) el día del examen. Se realiza el estudio en 882 exámenes de 786 pacientes que respondieron a un cuestionario. Los resultados encontrados son; respuesta de la preparación con un litro similar a la de 2 litros; 796(96%) de los evaluados encontraron tolerable el nuevo método de preparación. Cuando la respuesta de limpieza fue pobre se agregó un enema de glicerina 144/882 (13%). Esta forma de ayuda fue preferida en las encuestas a toma adicional de la sustancia de limpieza. Este método de limpieza del colon con 1,000ml, dados el mismo día del examen ha dado los siguientes ventajas: Dormir adecuadamente el día previo al examen; ausencia de restricciones dietéticas ni uso de laxantes el día anterior al examen, ausencia de la "urgencia para defecar" en camino al hospital que ocurre con la preparación del día previo y sensación de seguridad en hacer la preparación en el hospital.

Colonic lavage using about 2,000 mL of solution is performed routinely in Japan. However, consumption of such large amounts of fluid may be difficult for elderly individuals. From personal experience, it was observed that in European countries, the Modified Brown Method is mainly used, where patients are instructed to take 3,000 to 5,000 mL of water and a purgative on the day preceding colonoscopy. In the present study, dietary restrictions and use of purgatives on the preceding day were omitted, to reduce the burden on patients. The volume of lavage solution was limited to 1,000 mL, which was taken on the day of colonoscopy. This study included four groups, receiving various drugs, based on examination of 882 responses from 786 patients, to a questionnaire. Group1: 1 pack Niflec (Polyethylene glycol)+ 50g Magcorol(Citrate magnesium); group 2: 50g Magcorol + 10mL laxoberon (sodium picosulfate); Group 3; 60g Magcorol + 10mL laxoberon and Group 4 55g Magcorol + 20mL laxoberon . The results of Evaluation of Colonoscopic Cleansing showed, the satisfactory level of subjects on the 1000 mL method was similar to those on the 2,000 mL method. In addition, 796 (96%) of 882 subjects answered that the 1,000-mL lavage method was "tolerable". The final group received a lavage solution prepared by dissolving 55 g of Magcorol P® and 20 mL of Laxoberon® in 1,000 mL of water. On the day of colonoscopy at 8:30 in the morning, patients took 3 Gasmotin® tablets and lavage solution ingestion was induced at 09:00 and completed within 15 minutes. Cleansing efficacy in this group was 95%. A Glycerine enema was used when necessary, since its cleansing effect in patients (13%) was comparable to patients without enema. Moreover, in the questionnaire patients indicated that enemas were more acceptable than additional consumption of lavage solution. The following advantages were observed with the 1,000 mL lavage method: a) sufficient sleep on the preceding day due to the absence of dietary restrictions or use of purgatives; b) lesser concern regarding "urge to evacuate" on the way to the hospital and c) feeling of security in taking the lavage solution at the hospital.