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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: Validation of continuous cardiac output technologies: consensus still awaited. | Available online http ccforum.eom content 13 3 159 Commentary Validation of continuous cardiac output technologies consensus still awaited Maurizio Cecconi and Andrew Rhodes Department of General Intensive Care St George s Hospital Tooting London SW17 0QT UK Corresponding author Andrew Rhodes arhodes@sgul.ac.uk Published 26 June 2009 This article is online at http ccforum.com content 13 3 159 2009 BioMed Central Ltd Critical Care 2009 13 159 doi 10.1186 cc7909 See related research by Marque et al. http ccforum.com content 13 3 R73 Abstract An ability to measure cardiac output in a continuous and non-invasive fashion is eagerly awaited in the field of intensive care practice. Modern technologies purport to be able to do this but the design of studies that validate the manufacturers claims is by no means straightforward. It is imperative that the scientific community describes and agrees on a set of principles that will enable us to design and then review and assess future validation studies so that new technologies can be fairly assessed and compared with their competitors. In recent years there has been a move toward technologies that monitor cardiac output continuously and in a less invasive fashion than the pulmonary artery catheter 1-3 . This has brought many new challenges to the fore that perhaps had not previously been considered. One of these challenges pertains to how we validate the accuracy and precision or in other words the utility of the new devices. Difficulty arises because previous studies assessing intermittent techniques compared the measurement of cardiac output at a discrete time point against a reference gold standard . The statistical methodologies used to analyze these data are well described 4 5 . This is not the case for studies assessing continuous monitoring of cardiac output. Marque and colleagues 1 present an interesting study that highlights some of these issues. In their study they demonstrate that Bioreactance Cheetah Medical Inc. .
