Evidence map›Paper›PMID 42000931›Full record

SynthesisInternational journal of colorectal disease2026

Preoperative carbohydrate loading in elective colorectal surgery: postoperative complications and outcomes, a systematic review and meta-analysis.

Aristotelis Nikitaras, Manousos-Georgios Pramateftakis, Konstantinos Perivoliotis, Sandra Maria Tsoti, Prokopis Christodoulou, Orestis Ioannidis, George Tzovaras

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in International journal of colorectal disease, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Review
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

7 authors.

Aristotelis Nikitaras1st Department of Surgery, Asklepieio General Hospital of Voula, Athens, Greece.
Manousos-Georgios Pramateftakis4th Department of Surgery, Aristotle University of Thessaloniki, Thessaloniki, Greece. mpramate@auth.gr.
Konstantinos PerivoliotisDepartment of Surgery, General Hospital of Volos, Volos, Greece.
Sandra Maria TsotiDepartment of Surgery, Mediterraneo Hospital, Athens, Greece.
Prokopis Christodoulou1st Department of Surgery, Asklepieio General Hospital of Voula, Athens, Greece.
Orestis Ioannidis4th Department of Surgery, Aristotle University of Thessaloniki, Thessaloniki, Greece.
George TzovarasDepartment of Surgery, University Hospital of Larissa, Larissa, Greece.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study aimed to evaluate the clinical impact of preoperative carbohydrate loading in elective colorectal surgery.

methodsThe review followed the Cochrane Handbook for Systematic Reviews of Interventions and PRISMA guidelines. A systematic search was conducted in MEDLINE (via PubMed), Scopus and Cochrane CENTRAL (via Wiley) to 1 August 2025. All randomised controlled trials (RCTs) investigating preoperative carbohydrate loading in elective colorectal surgery were assessed. The primary outcome was overall postoperative complications; secondary outcomes included specific types of complications, gastrointestinal recovery time, independent mobilisation, and length of stay (LOS).

resultsA total of 3,483 citations were screened, yielding 13 RCTs with 996 patients (469 received preoperative carbohydrate loading, 198 consumed water and 329 followed overnight fasting). Carbohydrate loading did not significantly affect overall complications or mortality. Secondary outcomes suggested reduced respiratory infections (OR 0.35; p = 0.04), shorter time to first flatus (MD - 0.60; p < 0.01), earlier defecation (MD - 0.58; p = 0.01), shorter LOS (MD - 0.98; p < 0.01) and earlier mobilisation (MD - 0.49; p < 0.01).

conclusionPreoperative carbohydrate loading was not associated with a statistically significant reduction in overall postoperative complications. Sensitivity analyses suggested limited robustness of the primary outcome. Secondary outcomes suggested faster gastrointestinal recovery, fewer respiratory infections, earlier mobilisation and shorter length of stay; however, these findings should be interpreted cautiously given heterogeneity across trials and variability in perioperative pathways. Further high-quality multicentre randomised controlled trials are needed to confirm these effects in contemporary ERAS pathways.

Indexed as

Diet, Carbohydrate LoadingElective Surgical ProceduresPostoperative ComplicationsPreoperative CareColorectal Surgical ProceduresHumansLength of StayTreatment OutcomeCarbohydratesColectomyColorectal SurgeryEnhanced Recovery after SurgeryPreoperative Care

Identifiers

PMID42000931
PMCPMC13222900

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Registered trials

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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.