Objective to investigate the effect of gastric residual volume (GRV) and intra-abdominal pressure (IAP) measured by ultrasound on enteral nutrition in patients with invasive mechanical ventilation. Methods 112 critically ill adult patients who underwent invasive mechanical ventilation in the Intensive Care Medicine Department of our hospital from May 2023 to May 2024 were selected as the research subjects, The patients were divided into two groups using a random number table method, The control group (56 cases) and the trial group (56 cases) were given early enteral nutrition support and symptomatic treatment. The gastric residual volume (GRV) was measured by syringe withdrawal in the control group, and the gastric residual volume (GRV) was measured by ultrasound in the Study Group (GRV + IAP) at Q4H. After 7 days of admission to ICU, the rate of enteral nutritional calorie, the incidence of enteral nutritional intolerance, the indexes of immune function, inflammatory factors, nutritional metabolism, the duration of invasive mechanical ventilation and the length of stay in ICU were observed. Results the rate of enteral nutrition calorie in the study group was higher than that in the control group within 7 days after admission to ICU;The incidences of enteral nutrition intolerance, the duration of invasive mechanical ventilation and ICU stay in the study group were significantly lower than those in the control group; The levels of CD3+, CD4+, CD4+/CD8+ in the study group were significantly higher than those in the control group;The levels of proinflammatory factors (PCT, CRP, IL-6) in the study group were significantly lower than those in the control group; The nutritional metabolic indexes (ALB and hemoglobin) in the study group were significantly higher than those in the control group after treatment. Conclusion The combination of GRV measurement and IAP monitoring in severe cases is significantly more effective than simple syringe aspiration monitoring, which can improve the nutritional status of patients, reduce the incidence of enteral nutrition intolerance, and minimize the occurrence of complications. At the same time, it provides some reference for enteral nutrition assessment and treatment of patients undergoing invasive mechanical ventilation.
Key words
severe ultrasound /
enteral nutrition /
gastric residua volumel /
intra-abdominal pressure
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