Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: The contrast-enhanced Doppler ultrasound with perfluorocarbon exposed sonicated albumin does not improve the diagnosis of renal artery stenosis compared with angiography | Journal of Negative Results in BioMedicine BioMed Central Research Open Access The contrast-enhanced Doppler ultrasound with perfluorocarbon exposed sonicated albumin does not improve the diagnosis of renal artery stenosis compared with angiography Odila UN Teixeira Luiz A Bortolotto and Hélio Bernardes Silva Address Hypertension Unity Heart Institute InCor São Paulo Medical School Brazil Email Odila UN Teixeira - hipluiz@ Luiz A Bortolotto - hipluiz@ Hélio Bernardes Silva - hipluiz@ Corresponding author Published 20 September 2004 Received 26 March 2004 _k n__ n-I r-71-1 - - Accepted 20 September 2004 Journal of Negative Results in BioMedicine 2004 3 3 doi 1477-5751-3-3 This article is available from http content 3 1 3 2004 Teixeira et al licensee BioMed Central Ltd. This is an open-access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract There are no studies investigating the effect of the contrast infusion on the sensitivity and specificity of the main Doppler criteria of renal artery stenosis RAS . Our aim was to evaluate the accuracy of these Doppler criteria prior to and following the intravenous administration of perfluorocarbon exposed sonicated albumin PESDA in patients suspected of having RAS. Thirty consecutive hypertensive patients 13 males mean age of 57 10 years suspected of having RAS by clinical clues were submitted to ultrasonography US of renal arteries before and after enhancement using continuous infusion of PESDA. All patients underwent angiography and haemodynamically significant RAS was considered when 50 . At angiography it was detected RAS 50 in 18 patients 5 with bilateral stenosis. After contrast the examination time was slightly reduced by approximately 20 . In non-enhanced US the .
