tailieunhanh - Báo cáo y học: "Myocardial Doppler velocities as a marker of prognosis in the ICU"

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: Myocardial Doppler velocities as a marker of prognosis in the ICU. | Available online http content 11 5 167 Commentary Myocardial Doppler velocities as a marker of prognosis in the ICU Jan Poelaert1 and Carl Roosens2 Department of Anesthesiology University Hospital Brussels Laarbeeklaan 101 1090 Brussels Belgium 2Department of Intensive Care Medicine Ghent University Hospital De Pintelaan 185 B-9000 Gent Belgium Corresponding author Jan Poelaert Published 26 October 2007 This article is online at http content 11 5 167 2007 BioMed Central Ltd Critical Care 2007 11 167 doi cc6129 See related research by Sturgess et al. http content 11 5 R97 Abstract Relatively simple measures of echocardiography and Doppler as left ventricular end-systolic area and volume should be taken in consideration when performing a Doppler echocardiographic examination as they could have both clinical and prognostic value. Echocardiography made an enormous technological evolution from M mode imaging in the sixties to two-dimensional colour pulsed and continuous wave Doppler echocardiography to come to some rather sophisticated items such as myocardial Doppler imaging colour Doppler analysis of flow velocities and speckle tracking. The prognostic potential of these new techniques has not yet been elucidated in particular in critically ill patients. In this issue of Critical Care Sturgess et al. retrospectively analyzed a cohort of intensive care unit patients with respect to outcome 1 . Doppler myocardial imaging is a newer cardiac ultrasound technique in which the Doppler signals are processed following reflection of ultrasound beams originating within the myocardium. With this technique pulsed Doppler signals are analyzed by performing spectral or power analysis allowing more extensive analysis of diastolic function when used in conjunction with transmitral and pulmonary venous Doppler flow pattern analysis. Although Isaaz et al. already described pulsed Doppler recordings of myocardial .