tailieunhanh - Báo cáo y học: "Variability science in intensive care – how relevant is it"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care cung cấp cho các bạn kiến thức về ngành y đề tài: Variability science in intensive care – how relevant is it? | Critical Care December 2004 Vol 8 No 6 van de Borne Commentary Variability science in intensive care - how relevant is it P van de Borne Department of Cardiology Erasme Hospital Brussels Belgium Correspondence P van de Borne pvandebo@ Published online 24 September 2004 This article is online at http content 8 6 414 2004 BioMed Central Ltd Related to Research by Seely et al. see page 513 Critical Care 2004 8 414-415 DOI cc2938 Abstract The article by Seely et al. in this issue of Critical Care highlights that variability portend prognosis. Numerous parameters interact to modify variability in intensive care. The commentary discusses why variability can nevertheless accurately estimate prognosis and how easily this can be implemented in the critically ill. Keywords heart rate intensive care prognosis variability In this issue of Critical Care Seely and Macklem 1 present a clear and concise overview of several methodologies used to characterize variability. Why is this report important First not only does it provide an opportunity to appreciate the principles of the analytical techniques but it also gives clues for interpreting the results. Those who are unfamiliar with this field of investigation as well as those who participated in the early time domain and spectral analysis studies but who were somewhat overwhelmed by the complexity of the more recent and elaborate multifractal and entropy analyses will appreciate this broad overview. Second the relevance and respective contribution of the various techniques are clearly highlighted. This is an important aspect of the overview because such information is scarce in the medical literature. Most people would be more interested in the height of the coastal waves that challenge their homes in bad weather than in the average sea level. However as with many other elaborate research techniques the practitioner may question the clinical relevance of cardiovascular variability and why should he or

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