Y-V angioplasty of the ureteropelvic junction

If the obstruction of the ureteropelvic junction is not relieved by the above surgery, it is often necessary to reconstruct the new opening of the fistula to obtain a good normal drainage of the renal pelvis. Although there are many methods of pyeloplasty, the basic point is to use the wide wall of the renal pelvis to repair the lumen diameter of the stenosis, and at the same time to achieve the reduction of the renal pelvis cavity at the lowest part of the ureter. Make the fistula mouth funnel-shaped (Fig. 7.6.3.3.2-0-1). Surgical technique generally uses cutting the junction of the renal pelvis and the ureter, re-synchronizing after trimming, or not cutting the joint, and only using the various renal pelvic wall flaps to supplement the part of the wall of the narrow segment. Such angioplasty is more complicated than those described above. If there are no technical problems, the surgical effect is more certain. Renal pyeloplasty has been used for the treatment of hydronephrosis for a hundred years, but by the middle of the 20th century, there have been new reports of methods, but there is no stereotype as the only treatment for stenosis of the ureteropelvic junction. This is due to the different extent of the disease, but the experience and application habits of each urologist are also important factors. The anastomosis of the ureter and ureter is cut off. Although it has the advantage of completely removing the dysplasia wall, it is suitable for the anastomosis of the ideal part after the cut, but also the hemorrhage of the ureter and ureter is serious, affecting the healing of the anastomosis, leading to surgery failure or urinary fistula. possibility. The anastomosis of the ureter and ureter is not cut off. Although some of the blood circulation and urinary tissue are preserved to facilitate the healing of the incision, when the stenosis is too long, the pedicled renal pelvic wall flap is difficult to repair and cannot be completely removed. Dysplasia, it is inevitable that postoperative peristaltic wave conduction is blocked. Although the two types of methods have shortcomings, they can be compensated by some technical improvements. For example, when the ureter is cut, the intrinsic blood vessels from the renal pelvis and the anastomotic branches of the upper ureter are preserved. The spiral pelvic wall flap can prolong the repair of the long ureteral stenosis. segment. Treatment of diseases: repeated pelvic ureteral malformations Indication The ureteropelvic junction YV angioplasty is applied to the ureteropelvic junction and the short ureteral stenosis. The renal pelvis enlargement is not obvious, and no partial pyeloplasty is required. Contraindications When the renal pelvis needs to be reduced or when there is a ectopic blood vessel under the kidney, the position needs to be exchanged. Surgical procedure After revealing the upper part of the renal pelvis and the ureter, the joint of the pelvis and ureter was completely freed, and the traction hook was pulled up to reveal the posterior wall of the renal pelvis, the fistula connection and the posterior wall of the upper ureter. First, a "V" shaped wall flap was made in the enlarged renal pelvis, and the tip was to the stenosis of the fistula, and the incisions on both sides reached the edge of the renal parenchyma. The "V" shaped valve width length depends on the length of the stenosis. The incision continues through the fistula junction to the ureter to the full length of the stenosis. The ureteral stent tube and the renal pelvic ostomy tube are placed, and then the "V" shaped tip of the renal pelvic wall flap is pulled down to the lowest portion of the ureteral incision. The two sides of the "V" shaped flap are then sutured to the expanded ureteral sidewall so that the stenosis is widened by the V-shaped renal pelvic wall.

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