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

14 juli 2026 uppdaterad 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.

Studieöversikt

Status

Avslutad

Betingelser

Detaljerad beskrivning

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.

Studietyp

Observationell

Inskrivning (Faktisk)

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

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

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

Vuxen
Äldre vuxen

Tar emot friska volontärer

Nej

Testmetod

Icke-sannolikhetsprov

Studera befolkning

İntubated icu patients who diagnosed with sepsis

Beskrivning

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

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

Vad mäter studien?

Primära resultatmått

Resultatmått	Åtgärdsbeskrivning	Tidsram
Correlation of the central venous-arterial carbon dioxide difference with 28-day mortality Tidsram: 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

Sekundära resultatmått

Resultatmått	Åtgärdsbeskrivning	Tidsram
Predictive accuracy of perfusion parameters and APACHE II score for 28-day mortality Tidsram: 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

Samarbetspartners och utredare

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Sponsor

Gaziosmanpasa Research and Education Hospital

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

1 mars 2025

Primärt slutförande (Faktisk)

20 september 2025

Avslutad studie (Faktisk)

13 januari 2026

Studieregistreringsdatum

Först inskickad

25 december 2025

Först inskickad som uppfyllde QC-kriterierna

14 juli 2026

Första postat (Faktisk)

17 juli 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)