Denne siden ble automatisk oversatt og nøyaktigheten av oversettelsen er ikke garantert. Vennligst referer til engelsk versjon for en kildetekst.

Predictive Value of Nutritional and Inflammatory Indices for Postoperative Complications After Bariatric Surgery (BARI-NUTRI)

4. august 2026 oppdatert av: Panagiotis Chatzistavridis, G.Gennimatas General Hospital

The Predictive Value of Nutritional and Inflammatory Indices for Postoperative Complications in Bariatric Surgery Patients: A Single-Centre Retrospective Cohort Study

Bariatric surgery is an effective treatment for severe obesity, but postoperative complications remain an important cause of morbidity. Several nutritional and inflammatory biomarkers derived from routine preoperative blood tests have been proposed as predictors of postoperative outcomes; however, their comparative value in bariatric surgery has not been fully established.

This single-center retrospective cohort study will evaluate the ability of preoperative nutritional and inflammatory indices, including the Prognostic Nutritional Index (PNI), Neutrophil-to-Lymphocyte Ratio (NLR), Platelet-to-Lymphocyte Ratio (PLR), Systemic Immune-Inflammation Index (SII), Systemic Inflammation Response Index (SIRI), and C-reactive Protein-to-Albumin Ratio (CAR), to predict 30-day postoperative complications following bariatric surgery. The study aims to identify the most clinically useful biomarker for preoperative risk stratification and optimization of perioperative care.

Studieoversikt

Status

Aktiv, ikke rekrutterende

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Bariatric surgery is the most effective treatment for severe obesity and obesity-related comorbidities. Despite advances in perioperative care, early postoperative complications continue to contribute to patient morbidity and healthcare utilization. Reliable preoperative risk stratification tools are therefore essential for identifying patients at increased risk and optimizing perioperative management.

Nutritional status and systemic inflammation have emerged as important determinants of surgical outcomes. Several composite indices calculated from routinely available laboratory parameters, including albumin, C-reactive protein, leukocyte subsets, and platelet counts, have demonstrated prognostic value in different surgical populations. However, evidence regarding their comparative predictive performance in bariatric surgery remains limited.

This single-center retrospective cohort study will include consecutive adult patients who underwent sleeve gastrectomy or gastric bypass procedures between 2023 and 2026. Preoperative nutritional and inflammatory indices (PNI, NLR, PLR, SII, SIRI, and CAR) will be calculated from the most recent preoperative laboratory values.

The primary outcome is the occurrence of any Clavien-Dindo grade II or higher postoperative complication within 30 days after surgery. Secondary outcomes include the Comprehensive Complication Index (CCI), length of hospital stay, intensive care unit admission, and 30-day mortality. Multivariable regression analyses will be performed to determine the independent predictive value of each index after adjustment for relevant demographic and clinical variables.

The findings of this study are expected to improve preoperative risk assessment and facilitate identification of patients who may benefit from targeted perioperative optimization strategies.

Studietype

Observasjonsmessig

Registrering (Faktiske)

600

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Hellas
      • Athens, Hellas, 11526
        • General Hospital of Athens G Gennimatas

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

Adult patients who underwent bariatric surgery at a single tertiary referral center between 2023 and 2026 and met the study eligibility criteria.

Beskrivelse

Inclusion Criteria:

Adults aged 18 years or older.

  • Patients who underwent bariatric surgery (sleeve gastrectomy, Roux-en-Y gastric bypass, SADI, or SASI).
  • Availability of complete preoperative laboratory data required for calculation of nutritional and inflammatory indices.
  • Availability of postoperative follow-up data for assessment of 30-day complications.

Exclusion Criteria:

  • Patients younger than 18 years.

    • Missing key preoperative laboratory values required to calculate study indices.
    • Incomplete medical records or unavailable 30-day postoperative outcome data.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
Bariatric Surgery Cohort
Adult patients who underwent bariatric surgery (sleeve gastrectomy or gastric bypass procedures including Roux-en-Y gastric bypass, SADI, and SASI) between 2023 and 2026. Preoperative nutritional and inflammatory indices were evaluated for their association with 30-day postoperative complications.
Fremgangsmåte: Bariatric Surgery
Standard bariatric surgical procedures performed as part of routine clinical care, including sleeve gastrectomy and gastric bypass procedures (Roux-en-Y gastric bypass, SADI, and SASI). No study-specific intervention was assigned.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
30-Day Postoperative Complications (Clavien-Dindo Grade II or Higher)
Tidsramme: 30 days after surgery
Occurrence of any postoperative complication classified as Clavien-Dindo grade II or higher within 30 days after bariatric surgery.
30 days after surgery

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Comprehensive Complication Index (CCI)
Tidsramme: 30 days after surgery
Comprehensive Complication Index calculated from all postoperative complications occurring within 30 days after surgery.
30 days after surgery
Length of Hospital Stay
Tidsramme: From surgery until hospital discharge (up to 30 days)
Total duration of hospitalization following bariatric surgery.
From surgery until hospital discharge (up to 30 days)
From surgery until hospital discharge (up to 30 days)
Tidsramme: 30 days after surgery
All-cause mortality occurring within 30 days after bariatric surgery.
30 days after surgery

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

G.Gennimatas General Hospital

Etterforskere

  • Hovedetterforsker: Amalia Douma, MD PHD, G.Gennimatas General Hospital
  • Hovedetterforsker: Panagiotis Chatzistavridis, MD, G.Gennimatas General Hospital

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. januar 2023

Primær fullføring (Faktiske)

31. mai 2026

Studiet fullført (Antatt)

30. desember 2027

Datoer for studieregistrering

Først innsendt

31. juli 2026

Først innsendt som oppfylte QC-kriteriene

31. juli 2026

Først lagt ut (Faktiske)

5. august 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

6. august 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

4. august 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 24050/28-07-2026 (Registeridentifikator: Scientific Council Approval, General Hospital G. Gennimatas, Athens, Greece)

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

UBESLUTTE

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

Abonnere