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Association of Arterio-Venous Oxygen and Carbon Dioxide Gradients With Tissue Hypoperfusion and Mortality in Sepsis

14. juli 2026 oppdatert av: Gaziosmanpasa Research and Education Hospital

In patients with sepsis who are treated in the intensive care unit under invasive mechanical ventilation, the combined evaluation of ScvO₂ and PcvCO₂ may provide a comprehensive insight into tissue oxygenation and metabolic stress, allowing a more precise hemodynamic assessment in critically ill patients. The aim of this study is to evaluate the monitoring of ScvO₂, PcvCO₂, and EtCO₂ in intensive care patients in order to predict hemodynamic instability, 28-day mortality, and length of ICU stay, as well as to investigate their effects on cardiac output, tissue oxygenation, and hypoperfusion.

Studieoversikt

Status

Fullført

Forhold

Detaljert beskrivelse

In intubated patients admitted to the intensive care unit due to sepsis and receiving inotropic support, placement of a central venous catheter and blood gas analysis, as well as radial artery cannulation for invasive hemodynamic monitoring, are routinely performed. In these patients, ScvO₂ and ScvCO₂ measurements are obtained via the central venous catheter. End-tidal CO₂ (EtCO₂) is measured using capnography. Arterial blood gas analysis, including SaO₂ and PaCO₂, is performed through the radial arterial catheter. Data recorded at admission and at 6, 12, and 24 hours will be evaluated. Additional hemodynamic parameters, including heart rate, blood pressure, arterial blood gas values (pH, PaCO₂, HCO₃-), serum lactate levels, and cardiac output, will also be analyzed. Finger-tip perfusion index is measured using a pulse oximetry probe. Outcomes such as duration of mechanical ventilation, length of ICU stay, and 28-day mortality and morbidity will be assessed in conjunction with APACHE II and SOFA scores.

Studietype

Observasjonsmessig

Registrering (Faktiske)

Kontakter og plasseringer

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Studiesteder

Tyrkia (Türkiye)
- Gaziosmanpasa
  - Istanbul, Gaziosmanpasa, Tyrkia (Türkiye), 34255
    - Gaziosmanpasa Training and Research Hospital

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

İntubated icu patients who diagnosed with sepsis

Beskrivelse

Inclusion Criteria:

Adult patients aged 18 years or older
Diagnosis of sepsis
Admission to the intensive care unit
Intubated and receiving invasive mechanical ventilation
Presence of a central venous catheter

Exclusion Criteria:

Patients younger than 18 years
Patients in whom a central venous catheter cannot be placed
Patients receiving oxygen therapy via face mask or nasal cannula
Patients treated with non-invasive mechanical ventilation

Studieplan

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

Hvordan er studiet utformet?

Designdetaljer

Hva måler studien?

Primære resultatmål

Resultatmål	Tiltaksbeskrivelse	Tidsramme
Correlation of the central venous-arterial carbon dioxide difference with 28-day mortality Tidsramme: from march 2025 to january 2026	The primary outcome of this study is to evaluate the correlation between the central venous-arterial carbon dioxide difference and mortality in patients with sepsis admitted to the intensive care unit. The central venous-arterial carbon dioxide difference will be calculated using paired central venous and arterial blood gas samples obtained at predefined time points (at admission and at 6, 12, and 24 hours). Mortality will be assessed as 28-day all-cause mortality. The correlation between the carbon dioxide difference and mortality will be analyzed to determine its potential value as an indicator of mortality	from march 2025 to january 2026

Sekundære resultatmål

Resultatmål	Tiltaksbeskrivelse	Tidsramme
Predictive accuracy of perfusion parameters and APACHE II score for 28-day mortality Tidsramme: february 2025 to january 2026	The predictive accuracy of central venous-to-arterial carbon dioxide difference (Pcv-aCO₂), end-tidal carbon dioxide (EtCO₂), serum lactate concentration, and APACHE II score for 28-day all-cause mortality will be assessed using the area under the receiver operating characteristic curve (AUC-ROC) in patients with sepsis and septic shock. Each parameter will be evaluated separately for its discriminatory ability to predict mortality.	february 2025 to january 2026

Samarbeidspartnere og etterforskere

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

Sponsor

Gaziosmanpasa Research and Education 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. mars 2025

Primær fullføring (Faktiske)

20. september 2025

Studiet fullført (Faktiske)

13. januar 2026

Datoer for studieregistrering

Først innsendt

25. desember 2025

Først innsendt som oppfylte QC-kriteriene

14. juli 2026

Først lagt ut (Faktiske)

17. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)