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  • Title: Management of acute ureteral obstruction in pregnancy utilizing ultrasound-guided placement of ureteral stents.
    Author: Jarrard DJ, Gerber GS, Lyon ES.
    Journal: Urology; 1993 Sep; 42(3):263-7; discussion 267-8. PubMed ID: 8379026.
    Abstract:
    Of 6,275 pregnancies seen at our institution over a two-year period, 5 patients required operative intervention for acute urinary obstruction unresponsive to medical management. Ultrasonography was able to definitively diagnose the presence of an obstructing calculus in 4 of 5 patients. Using ultrasound guidance, 7 indwelling ureteral stents were successfully placed with local anesthesia supplemented by intravenous sedation. Complications consisted of distal stent migration in 1 patient. This method of management was successful for symptomatic nephrolithiasis in a pregnant renal transplant patient. Endoscopic placement of ureteral stents under ultrasound guidance is an effective, safe method of urinary decompression, with no radiation risks imparted to the mother or fetus. Definitive therapy then can be safely deferred to the post-partum period.
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