Department of Urology, Nippon Medical School Musashikosugi Hospital, Kanagawa, Japan.
Department of Radiology, Nippon Medical School Musashikosugi Hospital, Kanagawa, Japan.
Kobe J Med Sci. 2024 Jul 1;70(3):E77-E80. doi: 10.24546/0100490328.
We present a case involving a pregnant woman who needed transurethral lithotripsy for ureteral stent removal because of the stent encrustation.
A 34-year-old woman was diagnosed with calculous pyelonephritis, and a double-loop ureteral stent was placed in her right ureter, after which the pyelonephritis resolved. One week after her delivery, we attempted to remove the ureteral stent; however, the encrustation of the proximal and distal coils made it impossible. We then crushed the encrustation by transurethral lithotripsy and removed the ureteral stent successfully. The encrustation component was calcium phosphate, and the urinary pH during pregnancy and after delivery was 7.5.
Even in pregnant patients, patients placed ureteral stents for obstructive pyelonephritis with high urine pH might need to be replaced in the short term due to concerns regarding phosphate encrustation.
我们报告了 1 例因支架附着而需要经尿道碎石术取输尿管支架的妊娠患者。
1 名 34 岁女性因肾盂肾炎而放置双 J 型输尿管支架，肾盂肾炎治愈后取出支架。分娩后 1 周，我们尝试取出输尿管支架，但近端和远端线圈的附着使取管无法进行。我们随后通过经尿道碎石术粉碎附着，成功取出输尿管支架。附着成分是磷酸钙，妊娠和分娩后的尿 pH 值为 7.5。
即使是妊娠患者，如果由于磷酸盐附着的问题而使尿 pH 值升高，导致输尿管支架阻塞性肾盂肾炎，也可能需要短期更换支架。
