TABLE 1.
Surgical Outcomes of Tubular Ureteroplasty. Representative data from Pigs 1–5.
| Animal | Ureteroplasty approach and stent strategy | Ultrasonography (hydronephrosis grade) | Complications and management | Terminal outcomes | |||
|---|---|---|---|---|---|---|---|
| 2 weeks | 4 weeks | 8 weeks | 12 weeks | ||||
| Pig 1 | Transperitoneal + double pigtail stent for 8 weeks | No | 2 | 2 | 4 | Stent migration into the bladder at 4 weeks post-op. New stent reinserted until 8 weeks timepoint. | Stricture found in central neotissue. Bulk scaffold extruded into distal ureteral lumen |
| Pig 2 | Retroperitoneal flank + double pigtail stent for 12 weeks | 1 | 2 | 1 | 1 | Subcutaneous fistula formation at 2 weeks | Fistula formation in central neotissue |
| Pig 3 | Retroperitoneal flank + double pigtail stent for 8 weeks | No | 2 | 2 | 4 | None | Stricture found in central neotissue. Bulk scaffold extruded into distal ureteral lumen |
| Pig 4 | Retroperitoneal flank + double pigtail stent for 8 weeks | No | 1 | 1 | 4 | None | Stricture found in central neotissue. |
| Pig 5 | Retroperitoneal flank + double pigtail stent for 8 weeks | No | 1 | 1 | 4 | None | Stricture found in central neotissue. Bulk scaffold extruded into implant site. |