Multiple ureteral tubation for stones

Multiple ureteral tubation is a technique for removal of ureteral calculi, involving 2 to 9 ureteral catheters that are left indwelling for 12 hours to 10 days. In 317 patients the technique has been applied for 7 upper third, 47 middle third and 263 lower third ureteral calculi, ranging in size up to 2.2 cm. in diameter. Satisfactory extractions were accomplished in 300 of 317 cases (95 per cent). Complications were encountered in 6.0 per cent of the patients, chiefly in the earlier cases when experience with the technique was being gained.