Division of Critical Care Medicine, Department of Internal Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
Turk J Med Sci. 2020 Jun 23;50(4):860-869. doi: 10.3906/sag-1909-58.
BACKGROUND/AIM: FloTrac/Vigileo is a noncalibrated arterial pressure waveform analysis for cardiac index (CI) monitoring. The aim of our study was to compare the CI measured by the 4th generation of FloTrac with PiCCO in septic shock patients.
We simultaneously measured the CI using FloTrac (CIv) and compared it with the CI derived from transpulmonary thermodilution (CItd) as well as the pulse contour-derived CI using PiCCO (CIp).
Thirty-one septic shock patients were included. The CIv correlated with CItd (r = 0.62, P < 0.0001). The Bland-Altman analysis showed a bias of 0.14, and the limits of agreement were –1.62–1.91 L/min/m2 with a percentage error of 47.4%. However, the concordance rate between CIv and CItd was 93.6%. The comparison of CIv with CIp (n = 352 paired measurements) revealed a bias of -0.16, and the limits of agreement were –1.45–1.79 L/min/m2 with a percentage error of 44.8%. The overall correlation coefficient between CIv and CIp was 0.63 (P < 0.0001), and the concordance rate was 85.4%.
The 4th generation of FloTrac has not acceptable agreement to assess CI; however, it has the ability to tracked changes of CI, when compared with the transpulmonary thermodilution method by PiCCO.
背景/目的：FloTrac/Vigileo 是一种非校准的动脉压力波形分析，用于监测心指数（CI）。我们的研究目的是比较第四代 FloTrac 与 PiCCO 在感染性休克患者中的 CI 测量值。
我们同时使用 FloTrac（CIv）测量 CI，并将其与经肺热稀释法（CItd）得出的 CI 以及通过 PiCCO 获得的脉搏轮廓衍生 CI（CIp）进行比较。
共纳入 31 例感染性休克患者。CIv 与 CItd 相关（r = 0.62，P < 0.0001）。Bland-Altman 分析显示存在 0.14 的偏差，一致性界限为-1.62-1.91 L/min/m2，百分比误差为 47.4%。然而，CIv 与 CItd 的符合率为 93.6%。CIv 与 CIp 的比较（n = 352 对配对测量）显示存在-0.16 的偏差，一致性界限为-1.45-1.79 L/min/m2，百分比误差为 44.8%。CIv 与 CIp 之间的总体相关系数为 0.63（P < 0.0001），符合率为 85.4%。
第四代 FloTrac 评估 CI 的一致性不可接受；然而，与 PiCCO 的经肺热稀释法相比，它具有监测 CI 变化的能力。
