%0 Journal Article
%T Measurement of Anterior-Posterior Diameter of Inferior Vena Cava by Ultrasonography: A Non-Invasive Method for Estimation of Central Venous Pressure
%A R. Nafisi-Moghadam
%A H.R. Mansourian
%J Iranian Journal of Radiology
%D 2007
%I Tehran University of Medical Sciences
%X Background and Objective: The assessment of blood volume is now one of the most commonly needed interventions in the first line of care and severe ill patients. Measuring central venous pressure (CVP) is an invasive method, most frequently used in clinical practice for the assessment of volume status. The di-ameter of the inferior vena cava (IVC) is a parameter to estimate central venous pressure. The purpose of this study was to determine whether measurement of the anterior-posterior diameter of the IVC by ultra-sonography, correlates with CVP. Materials and Methods: It was a descriptive and pro-spective study on 50 patients; CVP was measured in supine position by CVP manometer. Anterior ¨C pos-terior IVC diameter was assessed by ultrasonography during inspiration and expiration. Results: The mean of CVP during inspiration and ex-piration was 11.31+5.59, 12.20 + 5.65cmH2o, respec-tively. The mean of inspiratory and expiratory IVC diameter was 7.71+3.56, 11.97+3.28 mm, respectively. There was significant relation between CVP and IVC diameter in the inspiration (r=0.664, p<0.0001) and expiration (r=0.495, p=0.001). The relation between these two variables was linear. Conclusion: Result of this study showed that IVC di-ameter measurement by ultrasonography can be used to estimate the mean of CVP.
%U http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/3166.pdf&amp;manuscript_id=3166