Evidence map›Paper›PMID 36707883›Full record

ReviewCritical care (London, England)2023

Toward nutrition improving outcome of critically ill patients: How to interpret recent feeding RCTs?

Jan Gunst, Michael P Casaer, Jean-Charles Preiser, Jean Reignier, Greet Van den Berghe

Open access · goldAbstract readReview
In one paragraph

Review in Critical care (London, England), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
11.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 68 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Challenges in Implementing High Protein Nutrition for ICU Patients.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2025
    Article
  12. Author Response: Challenges in Implementing High Protein Nutrition for ICU Patients.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2025
    Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Jan GunstClinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000, Leuven, Belgium. jan.gunst@kuleuven.be.ORCID 0000-0003-2470-6393
Michael P CasaerClinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000, Leuven, Belgium.ORCID 0000-0002-7087-0795
Jean-Charles PreiserErasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium.ORCID 0000-0003-3163-0390
Jean ReignierService de Médecine Intensive Réanimation, Centre Hospitalier Universitaire de Nantes, Université de Nantes, Nantes, France.ORCID 0000-0002-3768-3496
Greet Van den BergheClinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000, Leuven, Belgium.ORCID 0000-0002-5320-1362
KU Leuven · BECentre Hospitalier Universitaire de Nantes · FRUniversité Libre de Bruxelles · BE

Funding

European Research Council AdvG-2017-785809Fonds Wetenschappelijk Onderzoek 1832822NKU Leuven C24/17/070Ministère des Affaires Sociales et de la Santé #PHRC-12-0184Universitaire Ziekenhuizen Leuven, KU Leuven postdoctoraal KOOR mandaatVlaamse Overheid METH14/06
6 · The paper itself

Abstract

Although numerous observational studies associated underfeeding with poor outcome, recent randomized controlled trials (RCTs) have shown that early full nutritional support does not benefit critically ill patients and may induce dose-dependent harm. Some researchers have suggested that the absence of benefit in RCTs may be attributed to overrepresentation of patients deemed at low nutritional risk, or to a too low amino acid versus non-protein energy dose in the nutritional formula. However, these hypotheses have not been confirmed by strong evidence. RCTs have not revealed any subgroup benefiting from early full nutritional support, nor benefit from increased amino acid doses or from indirect calorimetry-based energy dosing targeted at 100% of energy expenditure. Mechanistic studies attributed the absence of benefit of early feeding to anabolic resistance and futile catabolism of extra provided amino acids, and to feeding-induced suppression of recovery-enhancing pathways such as autophagy and ketogenesis, which opened perspectives for fasting-mimicking diets and ketone supplementation. Yet, the presence or absence of an anabolic response to feeding cannot be predicted or monitored and likely differs over time and among patients. In the absence of such monitor, the value of indirect calorimetry seems obscure, especially in the acute phase of illness. Until now, large feeding RCTs have focused on interventions that were initiated in the first week of critical illness. There are no large RCTs that investigated the impact of different feeding strategies initiated after the acute phase and continued after discharge from the intensive care unit in patients recovering from critical illness.

Indexed as

Critical IllnessEnteral NutritionHumansIntensive Care UnitsNutritional StatusNutritional SupportAmino acidAutophagyCritical illnessEnergy targetEnteral nutritionIndirect calorimetryIntermittent feedingKetoneParenteral nutrition

Identifiers

PMID36707883
PMCPMC9883882
OpenAlexW4318309587

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.