When Food is Feared: A Systematic Review of Enteral Feeding by Nasogastric Tube in Young People with Eating Disorders

Abstract

Background Adolescents with severe restrictive eating disorders often require enteral feeding. Nasogastric feeding is occasionally used during hospitalisation to treat medical instability as a result of malnourishment, or in a specialist setting to supplement minimal oral intake by underweight patients. There is minimal guidance for clinicians to determine when nasogastric feeding should be implemented, how it should be provided and how to complement feeding with a nasogastric tube. This systematic review sets out to determine best practice for NG feeding. Methods A systematic review following PRISMA guidelines was conducted by searching AMED, EMBASE and MEDLINE databases from 2000-2020. Inclusion terms used were as follows: enteral feeding by nasogastric tube, under 18 years, eating disorders, and primary research. Exclusion terms: mental disorders other than eating disorders; non-primary research; no outcomes speci c to NG feeding and over 18 years. Titles and abstracts were screened by all authors before reviewing full length articles. Results 28 studies met the full criteria. 51.7% of studies were deemed high risk of bias due to the type of study: 37.9% retrospective cohort and 10.3% RCT; 17.2% were qualitative. Studies identi ed 1) 6-66% required NG feeding; 2) staff and young people understand its necessity but generally view it negatively; 3) there are 3 main types of feeding regime: continuous, nocturnal and bolus; 4) high calorie feeds are not associated with increased risk of refeeding syndrome; 5) Common complications were nasal irritation, epistaxis, electrolyte disturbance, distress and tube removal; 6) length of stay in hospital may be longer in patients requiring NG feeding; 7) psychiatric and medical wards differ in approach; 8) concurrent therapy reduces NG use and aids recovery. Conclusions All studies which reviewed the use of NG over a period of time found that it had increased signi cantly in recent years. Due to the possibility of patient removal of the tube, it may be bene cial in practice to deliver feeds using a bolus regime which has been tailored to the individual caloric needs of the patient. This review enables cautious recommendations to be made and highlights the lack of high-quality evidence around the use of NG feeding in eating disordered young people.