https://scholars.lib.ntu.edu.tw/handle/123456789/543921
標題: | Renal hemodynamics in patients with obstructive uropathy evaluated by duplex doppler sonography | 作者: | Chen J.-H. YEONG-SHIAU PU SHIH-PING LIU Chiu T.-Y. |
公開日期: | 1993 | 卷: | 150 | 期: | 1 | 起(迄)頁: | 18-21 | 來源出版物: | Journal of Urology | 摘要: | Duplex Doppler sonography was performed to differentiate varied degrees of obstructive uropathy by demonstrating the intrarenal arterial impedance in terms of pulsatility index and resistive index. We evaluated 56 kidneys in 28 normal subjects and 53 kidneys in 27 patients with unilateral or bilateral obstructive uropathy. The degrees of renal obstruction were determined by clinical criteria, such as excretory urography, antegrade pyelography and/or retrograde ureteral catheterization. There was excellent positive correlation between pulsatility index and resistive index values (correlation coefficient 0.77, p <0.001). In patients with obstructive uropathy there were significant differences in pulsatility index and resistive index values between the 33 obstructed and 20 nonobstructed kidneys (p <0.001 for both indexes). Significant differences were also found between the obstructed kidneys and the kidneys of normal subjects (p <0.001 for both indexes) even after controlling for the age factor (p <0.001). No difference was found between the nonobstructed kidneys of the patient group and those of normal subjects (p = 0.58 and 0.45 for pulsatility and resistive indexes, respectively). The resistive index values correlated well with the degrees of obstruction (p <0.001). The mean resistive index values for mildly and significantly obstructed kidneys were 0.64 ± 0.08 and 0.74 ± 0.05, respectively. More than 93.3% of the significantly obstructed kidneys had resistive index values greater than or equal to 0.70. The obstruction may be significant and demands surgical intervention when the resistive index reaches that value. In contrast, with resistive index values of less than 0.70 renovascular resistance is minimally altered and obstruction may be mild. The results can be applied clinically to help justify the indications for surgical intervention to relieve symptoms of obstructive uropathy. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027190425&doi=10.1016%2fS0022-5347%2817%2935386-7&partnerID=40&md5=96b6810f3ff91e007ae681cda29e68c1 https://scholars.lib.ntu.edu.tw/handle/123456789/543921 |
ISSN: | 0022-5347 | DOI: | 10.1016/S0022-5347(17)35386-7 | SDG/關鍵字: | adult; aged; article; clinical article; controlled study; Doppler flowmetry; human; hydronephrosis; intravenous urography; kidney blood flow; kidney vascular resistance; obstructive uropathy; priority journal; prostate hypertrophy; pulsatile flow; pyelography; renal artery; retroperitoneal cancer; ureter catheterization; ureter stricture; urolithiasis |
顯示於: | 醫學系 |
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