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Query: UMLS:C0403608 (ureter)
 9,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In 16 patients who had been operated on according to Andersen-Hynes an electrostimulation of the upper urinary passages was carried out. One electrode consisting of a carbon filament was induced into the pelvis of the ureter, a second one with an at least 100 times larger contact surface than in the carbon electrode was placed on the skin. When the motor activity was restored (usually on the 9th to 12th day after operation) the electrostimulation was discontinued. The advantage of the method presented consists in the fact that the electrostimulation takes place in physiologically established time intervals. The presence of a feedback allows to discontinue the electrostimulation in such cases in which the restored independent contractions of the ureter transgressed the given level of 1 mV.
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PMID:[Development and assessment of an artificial pacemaker of the ureter with feedback]. 349 81

Obstruction in the pyeloureteral region is often combined with an obstacle of an anatomical or functional character in the distally located parts of the ureter. The authors treated by operation 80 patients with congenital hydronephrosis in the period from 1986 to 1991. An additional distally located stricture of the ureter was found during intraoperative catheterization in 10 cases. In 9 of 10 cases the obstacle was at a distance of 1.7-2.0 cm from the pelvioureteral junction. Due to the small distance between the strictures the affected segment could be resected and an Andersen-Haynes anastomosis formed. The authors believe that the presence of double obstructions indicates marked dysplastic changes of the ureteral wall. In view of this, the use of optic magnification, microsurgical instruments, and ultrathin suturing material in the formation of the anastomosis is recommended. In 3 children operated on by the above discussed method the postoperative course was uneventful. A clinical case is given in illustration. It is suggested in the discussion that the indications for retrograde pyelography may be widened so as to identify additional strictures of the ureter at the diagnostic stage.
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PMID:[Surgical correction of multiple ureter obstructions in children]. 826 61

113 hydronephrosis children underwent Andersen-Hynes operation, 62 Calp de Werd operation. The ureteropelvic segment was examined morphologically. 3 macroscopic variants of ureteral structure and 5 variants of leiomyocyte presence in the muscular lining of the ureter are defined. Long-term follow-up results (1-10 years) are available. Resection gave positive results in 80%, graft plastic repair was effective in 92% of cases.
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PMID:[The choice of the type of operation in hydronephrosis in children]. 892 28

A new surgical technique is presented for treatment of affected ureter of the lower half of the double kidney consisting in lumbotomy, mobilization of the kidney and both ureters, followed by cutting off the ureter of the lower half of the double kidney from the pelvis and removal of the ureter. The ureter of the upper half is crossed at the distance of 5 cm from the pelvis and anastomosed with the pelvis of the lower half of the double kidney, its distal part is sutured with the lower part pelvis by Andersen-Hynes. As a result, two wide anastomoses of the proximal and distal parts of the ureter of the upper half of the double kidney with pelvis of its lower half is created. Drainage of the connected urethra is conducted separately with nephrostomic drainage, intubator and stent. Such surgical aid allows urine flow from both halves of the double kidney along one unaffected ureter of its upper half. Two women were operated by the above technique: a 53-year-old woman had iatrogenic lesion of the ureter of the lower half of the double kidney causing its extended defect; the other 21-year-old woman had a vesicoureteral reflux to the lower half of the kidney. Urodynamics of the upper urinary tract recovered in both the patients. Thus, upper ureteropyeloureteroanastomosis in complete doubling of the upper urinary tract and obstruction of the ureter of the lower half of the kidney reestablishes adequate urine outflow in the above anomaly by the unaffected ureter.
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PMID:[Upper ureteropyeloureteroanastomosis in obstruction of the ureter of the lower half of the double kidney]. 1864 74