Evaluation of intrarenal blood flow by Doppler ultrasonography immediately after extracorporeal shock wave lithotripsy on hydronephrotic kidney.
Extracorporeal shock wave lithotripsy (ESWL) is an effective and relatively noninvasive mode of treatment for urinary calculi. The aim of this study was to test whether therapeutic ESWL induces changes in renal parenchymatous blood flow and to evaluate shock wave side effects on the renal parenchyma. A total of 45 patients who underwent ESWL for ureteropelvic stone between January 2002 and July 2003 were included in this prospective study. Color Doppler sonography before and 30 minutes after ESWL showed no significant morphologic change. Resistive index (RI) was used to estimate renovascular resistance. The RI significantly increased in obstructed hydronephrotic kidneys. However, no significant change was observed in both treated and untreated kidneys before and after treatment. Hydronephrotic kidneys do not have a higher risk of post-ESWL renovascular resistance interference. The measurement of changes in RI with Doppler ultrasonography may provide useful information for clinical diagnosis of renal tubulointerstitial and vascular damage.
Juan
Yung-Shun
YS
Department of Urology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung, Taiwan.
Chuang
Shu-Mien
SM
Wu
Wen-Jeng
WJ
Shen
Jung-Tsung
JT
Li
Ching-Chia
CC
Wang
Chii-Jye
CJ
Huang
Chun-Hsiung
CH
D000328:Adult; D000368:Aged; D006801:Humans; D006869:Hydronephrosis / Q000503:physiopathology / Q000628:therapy*; D008096:Lithotripsy; D008875:Middle Aged; D011446:Prospective Studies; D012079:Renal Circulation; D018608:Ultrasonography, Doppler; D014655:Vascular Resistance