Pulmonary vascular permeability index and global end-diastolic volume: are the data consistent in patients with femoral venous access for transpulmonary thermodilution: a prospective observational study
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  • 作者:Helena Berbara ; Sebastian Mair ; Analena Beitz ; Benedikt Henschel…
  • 关键词:Lung edema ; ARDS ; Extravascular lung water ; Pulmonary vascular permeability index ; Transpulmonary thermodilution ; Femoral venous catheter ; Hemodynamic monitoring ; Cardiac output ; Catheter site ; PiCCO
  • 刊名:BMC Anesthesiology
  • 出版年:2014
  • 出版时间:December 2014
  • 年:2014
  • 卷:14
  • 期:1
  • 全文大小:707 KB
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  • 刊物主题:Anesthesiology; Internal Medicine; Emergency Medicine; Intensive / Critical Care Medicine;
  • 出版者:BioMed Central
  • ISSN:1471-2253
文摘
Background Transpulmonary thermodilution (TPTD) derived parameters are used to direct fluid management in ICU-patients. Extravascular lung water EVLW and its ratio to pulmonary blood volume (pulmonary vascular permeability index PVPI) have been associated with mortality. In single indicator TPTD pulmonary blood volume (PBV) is estimated to be 25% of global end-diastolic volume (GEDV). A recent study demonstrated marked overestimation of GEDV indexed to body-surface area (BSA; GEDVI) when using a femoral central venous catheter (CVC) for indicator injection due to the additional volume measured in the vena cava inferior. Therefore, a correction formula derived from femoral TPTD and biometric data has been suggested. Consequence, one of the commercially available TPTD-devices (PiCCO; Pulsion Medical Systems, Germany) requires information about CVC site. Correction of GEDVI for femoral CVC can be assumed. However, there is no data if correction also pertains to unindexed GEDV, which is used for calculation of PBV and PVPI. Therefore, we investigated, if also GEDV, PBV and PVPI are corrected by the new PiCCO-algorithm. Methods In this prospective study 110 triplicate TPTDs were performed within 30?hours in 11 adult ICU-patients with PiCCO-monitoring and femoral CVC. We analyzed if the femoral TPTD correction formula for GEDVI was also applied to correct GEDV. Furthermore, we compared PVPIdisplayed to PVPIcalculated which was calculated as EVLWdisplayed/(0.25*GEDVdisplayed). Results Multiplication of GEDVIdisplayed by BSA resulted in GEDVcalculated which was not significantly different to GEDVdisplayed (1459 ± 365?mL vs. 1459 ± 366?mL) suggesting that correction for femoral indicator injection also pertains to GEDVdisplayed. However, PVPIdisplayed was significantly lower than PVPIcalculated (1.64 ± 0.57 vs. 2.27 ± 0.72; p--.001). In addition to a bias of -0.64 ± 0.22 there was a percentage error of 22%. Application of the correction formula suggested for GEDVI to PVPIdisplayed reduced the bias of PVPIdisplayed compared to EVLW/PBV from -0.64 ± 0.22 to -0.10 ± 0.05 and the percentage error from 22% to 4%. Conclusions Correction for femoral CVC in the PiCCO-device pertains to both GEDVIdisplayed and GEDVdisplayed, but not to PVPIdisplayed. To provide consistent information, PVPI should be calculated based on GEDVcorrected in case of femoral CVC.

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