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Renal and carotid vascular resistance assessed with Doppler sonography
Author(s) -
Ohta Yuko,
Fujii Koji,
Ibayashi Setsuro,
Matsumura Kiyoshi,
Tsuchihashi Takuya,
Kitazono Takanari,
Ooboshi Hiroaki,
Kamouchi Masahiro,
Hirakata Hideki,
Ogata Toshiyasu,
Kuroda Junya,
Iida Mitsuo
Publication year - 2008
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.20444
Subject(s) - medicine , carotid arteries , vascular resistance , cardiology , pulse pressure , blood pressure , circulatory system , renal artery , ultrasound , doppler ultrasound , creatinine , common carotid artery , doppler sonography , kidney , artery , radiology
Purpose Resistance index (RI) is widely used for the evaluation of circulatory resistance and atherosclerosis with Doppler sonography, but differences in RI among vascular beds have not been fully elucidated. The present study was designed to evaluate the relationship between renal and carotid artery RI and to compare their relative risk factors for an increase in RI. Methods One hundred eighty‐five inpatients who underwent sonographic assessment of the renal and carotid arteries were enrolled in the study. Results Multivariate analyses revealed that age, pulse pressure (PP), and serum glucose level were positively correlated, whereas diastolic blood pressure (DBP) and creatinine clearance were negatively correlated with the RI of the interlobar arteries. Sex (male) and PP correlated positively, whereas DBP correlated negatively with the RI of the common carotid artery (CCA). The RI of the interlobar arteries was positively associated with that of the CCA, even after adjustment for major cardiovascular risk factors. Conclusions These findings suggest that RI of the renal and carotid arteries increase in parallel to a certain extent. On the other hand, risk factors for the increase of RI of the carotid and renal arteries differed in part, suggesting that specific control of respective risk factors may also be needed to prevent vascular damage in each vascular bed. © 2007 Wiley Periodicals, Inc. J Clin Ultrasound, 2008