Cited by 156Clinical Nutrition and GastroenterologyHyperglycemia and glycemic control in critically ill and hospitalized patientsEnhanced Recovery After Surgery

Impact of caloric intake in critically ill patients with, and without, refeeding syndrome: A retrospective study

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Olthof, Laura E., Koekkoek, W.A.C. Kristine, van Setten, Coralien, Kars, Johannes C.N., van Blokland, Dick, van Zanten, Arthur R.H.·2018·Clinical Nutrition

Abstract

BACKGROUND & AIMS: Refeeding syndrome comprises metabolic disturbances that occur after the reintroduction of feeding after prolonged fasting. Standard care consists of correcting fluid and electrolytes imbalances. Energy intake during refeeding syndrome is heavily debated. This study addresses the effect of caloric intake on outcome during the management of refeeding syndrome. METHODS: A retrospective study among critically ill invasive mechanically ventilated patients admitted for >7 days to a medical-surgical ICU. Refeeding syndrome was diagnosed by the occurrence of new onset hypophosphatemia (<0.65 mmol/l) within 72 h of the start of nutritional support. Primary outcome was 6-month mortality. Secondary outcomes were 3-month mortality, ICU and hospital length of stay and duration of mechanical ventilation. Outcomes of patients with and without refeeding syndrome were compared and subgroup analysis on energy intake within the refeeding population was performed for the duration of survival. RESULTS: Of 337 enrolled patients, 124 (36.8%) developed refeeding syndrome and 213 patients (63.2%) maintained normal serum phosphate levels. Between the two groups, no statistical significant differences in clinical outcomes were observed. Within the refeeding syndrome group, a reduced 6-month mortality risk for low caloric intake (<50% of target) was seen compared with normal intake, adjusted Hazard Ratio 0.39, (95% CI 0.16-0.95, p = 0.037). In this group, low caloric intake was associated with an increased overall survival time at day 180 (153.0 (SE 10.1) vs 119.1 (SE 8.0) days, log-rank p = 0.018). CONCLUSIONS: Refeeding syndrome is common among prolonged mechanically ventilated critically ill patients, however not predictable by baseline characteristics. Among patients that develop refeeding syndrome low caloric intake was associated with a reduction in 6-month mortality risk. This effect was not seen in patients without refeeding syndrome. Findings support caloric restriction in refeeding syndrome during critical illness.

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Crossref · 10.1016/j.clnu.2017.08.001

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  • Blood glucose control targeting a concentration of 6-8 mmol/l has been shown to be associated with improved outcome.

    “Blood glucose control is essential, and should target a concentration of 6-8 mmol/l which has been shown to be associated with improved outcome (361,362,363,364,365,366).”
  • Electrolyte alterations are less likely to occur with a cautious introduction of feeding, as shown by a recent early calorie restriction study and confirmed by a retrospective study.

    “A recent early calorie restriction study showed that electrolyte alterations were less likely to occur with a cautious introduction of feeding and this was confirmed by a retrospective study [149].”

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Authors
Olthof, L. E., Koekkoek, W. A. C. K., van Setten, C., Kars, J. C. N., van Blokland, D., & van Zanten, A. R. H.
Affiliations
Ziekenhuis Gelderse Vallei (NL)
Corresponding author
  • Olthof, Laura E.
  • Koekkoek, W.A.C. Kristine
  • Kars, Johannes C.N.
Venue
Clinical Nutrition
Publisher
Elsevier BV
Published
2018-10
Volume
37
Issue
5
Pages
1609-1617
ISSN
0261-5614 (ISSN-L)
OpenAlex
W2744223015
Cited by
156
References
29
Citations by year
2026: 15 · 2025: 15 · 2024: 24 · 2023: 15 · 2022: 11 · 2021: 23 · 2020: 24 · 2019: 15 · 2018: 13
FWCI
11.83
Type
journal article
Language
en
Open access
Locations
  • Clinical Nutrition (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Clinical Nutrition and Gastroenterology
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hyperglycemia and glycemic control in critically ill and hospitalized patients
  • Health Sciences › Medicine › Surgery › Enhanced Recovery After Surgery
Keywords
refeeding syndrome, energy intake, caloric restriction, critically ill patients, mechanical ventilation, hypophosphatemia, nutritional support, mortality, length of hospital stay, prolonged fasting
MeSH terms
Aged, Aged, 80 and over, Energy Intake, Female, Humans, Intensive Care Units, Length of Stay, Male, Middle Aged, Phosphates, Respiration, Artificial, Retrospective Studies, Critical Illness, Treatment Outcome, Hypophosphatemia, Nutritional Support, Caloric Restriction, Refeeding Syndrome

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