Malnutrition, nutritional interventions and clinical outcomes of patients with acute small bowel obstruction: results from a national, multicentre, prospective audit. Issue 7 (27th July 2019)

• Record Type: Journal Article
• Authors: Lee, Matthew James; Sayers, Adele E; Drake, Thomas M; Singh, Pritam; Bradburn, Mike; Wilson, Timothy R; Murugananthan, Aravinth; Walsh, Ciaran J; Fearnhead, Nicola S
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• Is Part Of: BMJ open. Volume 9:Issue 7(2019)
• Publication Date: 2019-07-27
• Subjects: adult surgery -- nutritional support -- perioperative care; Medicine -- Research -- Periodicals; 610.72
• DOI: 10.1136/bmjopen-2019-029235
• Languages: English
• ISSNs: 2044-6055

Abstract

Abstract : Objective: The aim of this study was to assess the nutritional status of patients presenting with small bowel obstruction (SBO), along with associated nutritional interventions and clinical outcomes. Design: Prospective cohort study. Setting: 131 UK hospitals with acute surgical services. Participants: 2069 adult patients with a diagnosis of SBO were included in this study. The mean age was 67.0 years and 54.7% were female. Primary and secondary outcome measures: Primary outcome was in-hospital mortality. Secondary outcomes recorded included: major complications (composite of in-hospital mortality, reoperation, unplanned intensive care admission and 30-day readmission), complications arising from surgery (anastomotic leak, wound dehiscence), infection (pneumonia, surgical site infection, intra-abdominal infection, urinary tract infection, venous catheter infection), cardiac complications, venous thromboembolism and delirium. Results: Postoperative adhesions were the most common cause of SBO (49.1%). Early surgery (<24 hours postadmission) took place in 30.0% of patients, 22.0% underwent delayed operation and 47.9% were managed non-operatively. Malnutrition as stratified by Nutritional Risk Index was common, with 35.7% at moderate risk and 5.7% at severe risk of malnutrition. Dietitian review occurred in just 36.4% and 55.9% of the moderate and severe risk groups. In the low risk group, 30.3% received nutritional intervention compared with 40.7% in moderate risk group and 62.7% in severe risk group. In comparison to the low risk group, patients who were at severe or moderate risk of malnutrition had 4.2 and 2.4 times higher unadjusted risk of in-hospital mortality, respectively. Propensity-matched analysis found no difference in outcomes based on use or timing of parenteral nutrition. Conclusions: Malnutrition on admission is associated with worse outcomes in patients with SBO, and marked variation in management of malnutrition was observed. Future trials should focus on identifying effective and cost-effective nutritional interventions in SBO.