关键词: ICU患者, 肠内营养, 耐受性, 大便异常

Abstract: Objective To investigate the efficacy of assessment of early enteral nutrition （EN） tolerance in ICU patients and the role of abnormal stool frequency monitoring. Methods The basic data of patients who met the inclusion criteria from January 1, 2021 to May 30, 2023, and the GRV, stool frequency, abdominal circumference, and bladder pressure on the 1st to 7th day before and after EN were retrospectively collected and grouped into groups. The change trend of each observation index, the occurrence time and incidence of abnormalities, and the percentage as the earliest basis for determining tolerance were analyzed and compared. Results The incidence of EN intolerance in ICU patients was 85.9%, the most common was abnormal stool, 91.1% had no stool for a day, 40.3% had no stool for more than 3 days, and 47.6% had diarrhea. In the intolerance group, the incidence of abnormal stool was 90.2%, the average occurrence time was 4.0 days, and the incidence of diarrhea was the highest on the 4th day with more than 3 days absence. As the basis for the earliest determination of intolerance, the percentage from high to low was diarrhea, increased bladder pressure, no stool for more than 3 days, GRV, increased abdominal circumference, and abdominal distension. Conclusion The incidence of early EN intolerance in ICU patients was 85.9%. As a method for early identification of EN intolerance, both no stool and diarrhea showed good evaluation value, and should be paid attention to in ICU EN management.

Key words: ICU patients, enteral nutrition, tolerance, abnormal stool