Application of the improved preoperative guidance on bowel preparation in elderly patients undergoing colonoscopy

Objective To explore the effectiveness and safety of the improved preoperative guidance on bowel preparation in elderly patients undergoing colonoscopy .Methods One hundred and twenty elderly patients undergoing colonoscopy were randomly divided into the observation group and the control group , each with 60 cases.The patients all received the non-residue diet three days before examination , liquid diet at the dinner one day before examination , fasting at the day of examination , and the sodium phosphate oral solution as the purgation medicine .The observation group received the improved preoperative guidance , and the control group received the conventional preoperative guidance .The quality of bowel preparation , the incidence rates of adverse reactions including nausea and vomiting , and the variabilities in blood pressure , heart rate and respiration were observed .Results The cases of patients who were pleased with the quality of bowel preparation were 53 cases in the observation group , and were significantly higher than 40 cases in the control group , and the difference was statistically significant （χ2 =8.0765, P ＜0.01 ）.The incidence rates of adverse reactions including nausea and vomiting in the observation group were significantly lower than those in the control group , and the differences were statistically significant （χ2 =11.116 6, 13.330 8, 10.108 6, 7.529 4, respectively;P〈0.01）.No differences were found in the blood pressure , heart rate and respiration before the examination in two groups （P〉0.05）;The blood pressure, heart rate and respiration in the observation group were lower than those in the control group after the examination, and the difference was statistically significant （P〈0.01）. Conclusions The improved preoperative guidance is more effectiveness and safety in bowel preparation in elderly patients with colonoscopy , and has important clinical significance . Key words: Elders; Colonoscopy; Bowel preparation; Improved preoperative guidance