tailieunhanh - Báo cáo y học: "Fast-track microcirculation analysis"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Fast-track microcirculation analysis. | Available online http content 11 6 426 Letter Fast-track microcirculation analysis Paul WG Elbers Department of Anesthesia Intensive Care Medicine and Pain Management St Antonius Hospital Nieuwegein The Netherlands Corresponding author Paul WG Elbers paulelbers@ Published 21 December 2007 This article is online at http content 11 6 426 2007 BioMed Central Ltd Critical Care 2007 11 426 doi cc6182 See related research by De Backer et al. http content 11 5 R101 The recently published report How to evaluate the microcirculation 1 should be praised for standardizing analysis of human microcirculation data. This standardization will enable better comparison between studies. Having worked extensively with both orthogonal polarization spectral OPS and sidestream dark field SDF imaging and most analysis software I feel the proposed analysis is extremely useful but is also equally time consuming. Despite advances in computer analysis current practice is still predominantly manual. I therefore wish to make a comment that may greatly simplify the procedure. The report suggests determining the microvascular flow index MFI the perfused vessel density PVD and the percentage of perfused vessels PPV . For the MFI a grid is used dividing the screen into four quadrants and the vessels are scored according to observed flow 0 none 1 intermittent 2 sluggish 3 continuous. For the PVD and the PPV three equidistant horizontal and vertical lines are drawn and a different score is used absent intermittent present for details see 1 . I propose using the same grid for the MFI the PPV and the PVD. Dividing the MFI quadrants into four sections more effectively creates the PPV and PVD lines see Figure 1 . Each vessel is then scored according to the MFI criteria. The PPV and the PVD are calculated as usual. Vessels with MFI scores of 2 or 3 are classified as having flow present. Finally the MFI is calculated as ordinary. I used this method .