Central venous-to-arterial CO2 gap is a useful parameter in monitoring hypovolemia-caused altered oxygen balance Animal study /

Central venous-to-arterial CO2 gap is a useful parameter in monitoring hypovolemia-caused altered oxygen balance Animal study /

Monitoring hypovolemia is an everyday challenge in critical care, with no consensus on the best indicator or what is the clinically relevant level of hypovolemia. The aim of this experiment was to determine how central venous oxygen saturation (ScvO2) and central venous-to-arterial carbon dioxide di...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: Kocsi Szilvia
Demeter Gábor
Érces Dániel
Nagy Enikő
Kaszaki József
Molnár Zsolt
Dokumentumtípus: Cikk
Megjelent: 2013
Sorozat:CRITICAL CARE RESEARCH AND PRACTICE 2013
Tárgyszavak:
Klinikai orvostan
doi:10.1155/2013/583598

mtmt:2424566
Online Access:http://publicatio.bibl.u-szeged.hu/30165
Leíró adatok
Tartalmi kivonat:Monitoring hypovolemia is an everyday challenge in critical care, with no consensus on the best indicator or what is the clinically relevant level of hypovolemia. The aim of this experiment was to determine how central venous oxygen saturation (ScvO2) and central venous-to-arterial carbon dioxide difference (CO2 gap) reflect hypovolemia-caused changes in the balance of oxygen delivery and consumption. Anesthetized, ventilated Vietnamese minipigs (n = 10) were given a bolus followed by a continuous infusion of furosemide. At baseline and then in five stages hemodynamic, microcirculatory measurements and blood gas analysis were performed. Oxygen extraction increased significantly, which was accompanied by a significant drop in ScvO2 and a significant increase in CO2 gap. There was a significant negative correlation between oxygen extraction and ScvO 2 and significant positive correlation between oxygen extraction and CO2 gap. Taking ScvO 2 < 73 % and CO2 gap >6 mmHg values together to predict an oxygen extraction >30%, the positive predictive value is 100%; negative predicted value is 72%. Microcirculatory parameters, capillary perfusion rate and red blood cell velocity, decreased significantly over time. Similar changes were not observed in the sham group. Our data suggest that ScvO 2 < 73 % and CO2 gap >6 mmHg can be complementary tools in detecting hypovolemia-caused imbalance of oxygen extraction. © 2013 Szilvia Kocsi et al.
Terjedelem/Fizikai jellemzők:7
ISSN:2090-1305

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