An observational study in Septic Shock, sponsored by Avicenna Military Hospital. Completed at 3 sites in Morocco. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-13.
Sponsored by Avicenna Military Hospital · Observational
The ratio of the venous-arterial carbon dioxide partial pressure difference to the arteriovenous oxygen content difference (Pv-aCO₂/Ca-vO₂) may be a marker of anaerobic metabolism in patients with acute circulatory failure. This study aims to assess the prognostic value of the PvCO2-PaCO2/CaO2-CvO2 in the early phase of septic shock.
The ratio of the venous-arterial carbon dioxide partial pressure difference to the arteriovenous oxygen content difference (Pv-aCO₂/Ca-vO₂) may be a marker of anaerobic metabolism in patients with acute circulatory failure. This study aims to compare the kinetics of the PvCO2-PaCO2/CaO2-CvO2 ratio with a classic marker of anaerobic metabolism (arterial lactate) in the early phase of septic shock.
1,078 studies on the registry are indexed under Shock, Septic; 232 are open to participants now.
This study's enrollment of 30 is below the median of 108 across 406 observational studies indexed under Shock, Septic.
Browse Shock, Septic studies →Avicenna Military Hospital is the lead sponsor of 8 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Patients aged over 18 years presenting with septic shock, defined as sepsis with persistent hypotension requiring vasopressors to maintain a mean arterial pressure (MAP) ≥ 65 mmHg and lactatemia > 2 mmol/L despite adequate fluid resuscitation. Sepsis is defined by the presence of a suspected or confirmed infectious source associated with organ dysfunction (neurological, respiratory, renal, hepatic, or hematological). [Sepsis 3 criteria]
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Patients aged over 18 years presenting with septic shock, defined as sepsis with persistent hypotension requiring vasopressors to maintain a mean arterial pressure (MAP) ≥ 65 mmHg and lactatemia > 2 mmol/L despite adequate fluid resuscitation. Sepsis is defined by the presence of a suspected or confirmed infectious source associated with organ dysfunction (neurological, respiratory, renal, hepatic, or hematological). [Sepsis 3 criteria]
Exclusion Criteria:
Patients aged over 18 years presenting with septic shock. defined as sepsis with persistent hypotension requiring vasopressors to maintain a mean arterial pressure (MAP) ≥ 65 mmHg and lactatemia \> 2 mmol/L despite adequate fluid resuscitation.
Diagnostic Test: PvCO2-PaCO2/CaO2-CvO2 ratio
Patients diagnosed with septic shock will undergo serial measurements of arterial and venous blood gas analyses, arterial lactate levels, and calculation of the Pv-aCO₂/Ca-vO₂ ratio at predefined time points: H0 (baseline), H2, H6, H12, and H24. Calculation Formulas: 1. Arterial Oxygen Content (CaO₂):CaO2 = SaO2 × Hb × 1,34 + PaO2 × 0,0031 2. Venous Oxygen Content (CvO₂):CvO2 = SvO2 × Hb × 1,34 + PvO2 × 0,0031 3. Pv-aCO₂/Ca-vO₂ Ratio: P(v-a) CO2/C(a-v)O2=(PcvCO2-PaCO2)/(CaO2 -CcvO2).
Prognostic value of PvCO2-PaCO2/Ca O2-CvO2 in patients with septic shock
The ability of PvCO2-PaCO2/Ca O2-CvO2 to predict mortality in patients with septic shock. These biological values will be measure using arterial and central venous blood gaz.
Time frame: From patient inclusion (baseilie = H0) then at H2, H6, H 12 and H24 (H = hours)
Plan to share: Yes — Biological, hemodynamic and outcome data.
Supporting information: Study protocol, Statistical analysis plan, Clinical study report
Time frame: For 2 years after study completion.
Ran from Jan 2025 to primary completion in Jun 2026, 17 months.
Of 189 non-industry observational studies under Shock, Septic, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 47. This study's 17 months is below that.
Counting every sponsor, half of 202 studies reached it within 25 months; a quarter within 12 and three quarters within 47.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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Avicenna Military Hospital