Abstract
Sixty consecutive percutaneous nephrostomies were attempted in 37 patients with a 97-per cent success rate. The patients ranged in age from three to seventy-three years. Twenty-eight attempted nephrostomies were bilateral and 32 unilateral. When possible, the percutaneous nephrostomies were converted into internal ureteral stents by antegrade techniques. In each case of apparent complete ureteral obstruction, the area was successfully negotiated, and an indwelling ureteral stent was placed. In 2 patients, combined antegrade and retrograde techniques were required for successful internal stent placement. There was one failure because of a subcapsular hematoma resulting from multiple punctures with an l8-gauge needle. One major complication occurred when a segmental branch of the renal artery was injured by the nephrostomy catheter.
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