Te absence of use had been related. Specialist software capable of helping residents to interpret PAC information effectively may improve the excellent of care provided to critically ill patients.Reference:1. Squara P, Dhainaut J, Lamy M, Perret C, Larbuisson R, Poli S, Armaganidis A, de Gournay J, Bleichner G: Personal computer assistance for hemodynamic evaluation. J Crit Care 1989, four:273?82.SAvailable on the net http://ccforum.com/supplements/5/SP156 Astragaloside IV web measured and calculated SvO2: do they alter clinical choices?P Myrianthefs, C Ladakis, G Fildissis, S Pactitis, A Damianos, V Lappas, G Baltopoulos Athens University, College of Nursing, ICU, KAT Hospital, Nikis two, Kifissia, Athens, Greece Introduction: Blood gas evaluation (BGA) and PA oximetry catheters (PAOC) utilised to ascertain mixed venous oxygen saturation (SvO2) are based on fundamentally diverse technologies and hence they normally generate discrepant values [1]. Straight measured SvO2 by the PAOC would be the criterion standard against which calculation of SvO2 from PvO2 by BGA is judged. Approaches: We investigated the accuracy of SvO2 determination in between BGA (AVL 995-Hb) and PAOC (Opticath, PA Catheter P 7110, Abbot) in 61 critically ill ICU patients. We had 244 couples’ of SvO2 values simultaneously determined by the two distinctive technologies. Final results: Results, descriptive statistics and correlation coefficients are shown the Table. The distinction amongst measured and calculated SvO2 was statistically important (P < 0.000). Conclusions: Calculation of SvO2 using BGA technology is always higher than PAOC SvO2 direct measurement by 1.6 . Although this difference is statistically significant (P < 0.00) the correlation between the two methods is quite high (r = 0.828, P < 0.01). BGA significantly overestimates SvO2 in comparison toTable Method Blood gas analysis Oximetric PA catheter X ?SEM 70.3 ?0.65 PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/20719582 68.7 ?0.61 P (t-test) 0.000 r* 0.828 R2 0.*Correlation is significant in the 0.01 level (2-tailed).PAOC. These benefits recommend that calculated SvO2 may possibly affect therapeutic decisions in comparison to directly measured SvO2 because the slope in the oxyhemoglobin dissociation curve is very steep within the usual SvO2 variety and thus smaller alterations within the determination of PvO2 will lead to somewhat huge changes in calculated saturation [1]. Also, minor calculated hemoglobin saturation differences in this steep part of the curve represent key variations in hemoglobin O2 carrying capacity. Reference:1. Bowton D, Scuderi P: Monitoring of mixed venous oxygenation. In Principles and Practice of Intensive Care Monitoring, Chapter 19. Edited by T Martin. McGraw-Hill, Inc, 1998:303?15.P157 Comparison of two thermodilution devices for postoperative care in sufferers with aneurysmal subarachnoid hemorrhageS Wolf, L Sch er, R Dietl, H Gumprecht, HA Trost, ChB Lumenta Department of Neurosurgery, Academic Hospital Munich-Bogenhausen, Technical University of Munich, Munich, Germany Objective: In the postoperative care of individuals with extreme aneurysmal subarachnoid hemorrhage, a pulmonary artery (PA) catheter is very recommended for guiding the suitable hyperdynamic volume management. We prospectively evaluated the accuracy of cardiac output (CO) measurements of a new device for continuous CO monitoring based on transpulmonary thermodilution detected inside a femoral artery line against the identified gold normal of a PA catheter. Methods: Ten patients presenting with high-grade aneurysmal subarachnoid hemorrhage were monitored in their postoper.