Conţinutul numărului revistei |
Articolul precedent |
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59 0 |
SM ISO690:2012 POTTECHER, Julien, BELÎI, Adrian, HUNTZINGER, Julien, CHAUSSERET, Laurence, SOLTNER, Christophe, BEYDON, Laurent. Arteriovenous difference in O2 content, pulmonary venous O2 saturation, cardiac index: Are they equivalent in cardiac surgery? In: Annales Francaises d'Anesthesie et de Reanimation, 2008, vol. 27, pp. 957-961. ISSN 0750-7658. DOI: https://doi.org/10.1016/j.annfar.2008.09.021 |
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Annales Francaises d'Anesthesie et de Reanimation | ||||||
Volumul 27 / 2008 / ISSN 0750-7658 /ISSNe 1769-6623 | ||||||
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DOI:https://doi.org/10.1016/j.annfar.2008.09.021 | ||||||
Pag. 957-961 | ||||||
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Objective: To study the concordance of cardiac index (CI), mixed venous oxygen saturation (SvO2) and the arterial-mixed venous O2 content difference, i.e.: C(a-v)O2, postoperatively to cardiac surgery. We hypothesized that significant discrepancies would be measurable between C(a-v)O2 and SvO2, and CI, because the latter two indices encompass less metabolic components than the former. Design: Analysis of variables collected as part of routine care. Patients: Eighty anesthetized patients receiving mechanical ventilation after heart surgery. Measurements and results: Using linear regression of SvO2 versus C(a-v)O2 (Reg 1) and CI versus C(a-v)O2 (Reg 2), respectively we found that CI = 2.2 L min-1 m-2 and SvO2 = 70% were equivalent to C(a-v)O2 = 5 ml/100 ml. The error reflected by the vertical scatter of points around the regression line, once normalized was 3.24 times greater in Reg 2 than in Reg 1. Conclusions: The correspondence of CI, SvO2 and C(a-v)O2 values observed in a population of patients studied immediately after scheduled heart surgery match those reported in critically ill patients. SvO2 and furthermore CI induced a sizeable scatter of points around regression line. Accordingly, they appear as a lesser estimate of the flow/metabolism balance that may at best be inferred from C(a-v)O2. |
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Cuvinte-cheie Cardiac Surgical Procedures, Catheterization, Critical care, Investigative, monitoring, Physiologic, postoperative period, Swan-Ganz, techniques, Cathe´te´risation, Swan-Ganz, Monitorage, He´modynamique, Chirurgie cardiaque |
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