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英文誌(2004-)

Journal of Medical Ultrasonics

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2000 - Vol.27

Vol.27 No.10

Original Article(原著)

(1311 - 1317)

水腎症における血流動態の検討

Hemodynamics of Hydronephrosis Evaluated by Color Flow Imaging

池上 雅久1, 永野 哲郎1, 栗田 孝1, 西岡 伯2, 秋山 隆弘2, 能勢 和宏3, 片岡 喜代徳3

Masahisa IKEGAMI1, Tetsuro NAGANO1, Takashi KURITA1, Tukasa NISHIOKA2, Takahiro AKIYAMA2, Kazuhiro NOSE3, Kiyonori KATAOKA3

1近畿大学医学部泌尿器学教室, 2近畿大学堺病院, 3泉大津市立病院泌尿器科

1Department of Urology, Kinki University School of Medicine, 377-2 Onohigashi, Osakasayama-shi, Osaka 589-8511, Japan, 2Department of Urology, Kinki University Sakai Hospital, 2-7-1 Harayama, Sakai-shi, Osaka-fu 590-0132, Japan, 3Department of Urology, Izumiotsu Municipal Hospital, 16-1 Shimojo-machi, Izumiotsu-shi, Osaka-fu 595-0000, Japan

キーワード : Color flow imaging, Hydronephrosis, Power mode, Renal blood flow

Purpose We investigated the renal hemodynamics of patients with hydronephrosis by using color flow imaging to investigate the relation between severity of hydronephrosis and presence or absence of colic pain.
Method A group of 38 patients with hydronephrosis (42 kidneys, consisting of 18 right and 24 left kidneys) and a control group of 11 healthy subjects (6 right and 5 left kidneys) were enrolled in the study. Severity of hydronephrosis was calculated using the hydronephrosis index (HI). The control group was designated as group A; those with kidney pain and an HI of less than 0.7, as group B; those with no pain and an HI of less than 0.7, as group C; those with pain and an HI of 0.7 or more, as group D; and those with no pain and an HI of 0.7 or more, as group E. Color flow imaging equipment (SSD-2000, Aloka Inc.) and a 5.5 MHz probe were used. The resistive index (RI) (Vmax-Vmin)/Vmax) was used as a measure of vascular resistance of the segmental and the interlobar arteries.
Results The results showed that RI increased in those arteries in mildly hydronephrotic kidneys when patients had pain (HI less than 0.7). Pain was therefore a factor accounting for increase in RI in those arteries. RI increased significantly regardless of the presence or absence of pain in groups with an HI of 0.7 or more. Vascular pressure caused by hydronephrosis increased RI and reduced peripheral blood flow.