Abstract:Objective To study the application effect of bedside indwelling nasal jejunum nutrition in critically ill patients. Methods A total of 80 critically ill patients treated in our hospital from March 2017 to March 2019 were selected as the research subjects, they were divided into control group and experimental group according to random number table method, 34 cases in each group, the patients in the control group were treated with nasogastric tube nutrition, and the patients in the experimental group were given nasal jejunum tube nutrition therapy. The changes of nutritional indexes, immune function indicators at 1, 5, 10 d after treatment, incidence of postoperative complications and intubation time between the two groups were compared. Results After treatment, the levels of serum hemoglobin (Hb) and serum albumin (ALB) in the experimental group were higher than those in the control group, and the differences were statistically significant (P<0.05). There were no significant differences in IgM and IgG between the two groups at 1 and 5 days after treatment (P>0.05). IgM and IgG were higher than those before treatment at 10 days after treatment, and the experimental group was higher than the control group, the differences were statistically significant (P<0.05). The incidence rates of postoperative obstruction, diarrhea, gastrointestinal hemorrhage, and reflux in the experimental group were lower than those in the control group, and the intubation time was longer than that in the control group, and the differences were statistically significant (P<0.05). Conclusion Bedside indwelling nasal jejunum nutrition can effectively improve the nutritional status of critically ill patients, promote the recovery of immune function after treatment, and reduce the incidence of complications after intubation.