Biomedical subjects

S B Urenkov

Publications and source records attributed to S B Urenkov.

29 records · Page 2Linked to original sources

PubMedDate not supplied

[The treatment of stones in the transplanted kidney].

The paper reports 3 cases of positive results achieved at extracorporeal lithotripsy for concrements in the transplanted kidney. To avoid such potential complications as subcapsular hematoma, rupture of the transplant, its ureter occlusion by the stone fragments, acute pyelonephritis, lithotripsy should be conducted in sparing regimen (low and moderate power, number of impulse per a session not more than 2000) under ultrasound control. In defective urine outflow from the transplant as a result of pretreatment obstruction by the stone or posttreatment obstruction by its fragments a drainage must be done by means of transcutaneous puncture nephrostomy.

Adolescent↗

PubMedDate not supplied

[The treatment of ureteral stricture in patients following kidney transplantation].

Ureteral strictures in kidney recipients are serious urological complications often responsible for the transplant rejection and sometimes for the recipient's death. The stricture-related slight and nonspecific symptoms often underlie its late diagnosis and inadequate treatment. Obligatory follow-up ultrasonic investigations promote early detection of ureteral stenosis. Eight kidney recipients with ureteral stricture initially underwent transcutaneous puncture nephrostomy preserving the transplant function and preventing aggravation of the condition. In view of threatening infection and weak reparative capacity of immunosuppressed patients, less traumatic transcutaneous interventions seem preferable in further treatment: bouginage, balloon dilatation or the stricture dissection followed by insertion of the inner stent. In uneffective transcutaneous surgery due to extended ureteral strictures or complete obstruction of the ureter it is valid to conduct pyeloureterostomy with the recipient's own ureter.

Female↗

PubMedDate not supplied

[Extracorporeal lithotripsy in certain forms of urolithiasis].

Therapeutic results of remote lithotripsy have been analyzed for 1016 patients with urolithiasis. The authors also focus on specific features of remote lithotripsy in anomalous stones, in nephroliths on the single and transplanted kidney, in location of the stone in the ureter. The efficacy of the procedure is reviewed in pediatric patients. Satisfactory results were achieved in 962 patients (95%). Remote lithotripsy is considered to be a valuable component of combined treatment of urolithiasis replacing successfully open surgery in 95% of the cases.

Adolescent↗

PubMedDate not supplied

[Extracorporeal lithotripsy in the treatment of urolithiasis].

The material gained in the urological clinic of the Moscow Regional Research Clinical Institute covers 2000 cases of uroliths treated with extracorporeal lithotripsy (ECL) for 4 years. Factors implicated in the treatment outcomes, measures to prevent ECL complications, recommendations for ECL regimens in different clinical forms are specified.

Adult↗

PubMedDate not supplied

[A familial form of nephrolithiasis in patients following kidney transplantation?].

Causes and mechanisms underlying nephrolithiasis after transplantation of the kidney differ much from known in other urological patients. We have found calculi in transplanted kidney in 5 of 939 surgical patients. Two cases of concrement formation in the transplant in the members of the same family aged 22 and 26 years we report as interesting. Our experience and literature data suggested family nature of the concrements. One of the patients underwent pyelolithotomy, the other impulse lithotripsy. Both the transplants function normally 5 years after kidney transplantation.

Adult↗

PubMedDate not supplied

[The treatment procedure in patients with a combination of kidney tumor and urolithiasis].

Renal carcinoma and urolithiasis combine rather rarely. Postnephrectomy patients often consult the urologist when the condition is serious because of complications resultant from uroliths in the contralateral kedney. In view of solitary kidney, progressive chronic pyelonephritis, associated chronic renal failure surgical treatment of the condition becomes risky and necessitates individual approach to choice of therapeutic policy and definition of indications to urolithiasis treatment in patients after nephrectomy for renal carcinoma. This includes the decision whether to perform nephrolithiasis before or after nephrectomy and whether to attempt any surgery in the absence of urolithiasis clinical symptoms.

Adult↗

PubMedDate not supplied

[The diagnosis and treatment of simple kidney cysts].

The authors have gained the experience of diagnosis and treatment of renal cysts in 182 patients. The disease was asymptomatic in 12 patients. The final diagnosis was established after ultrasound scanning in 98.35% of cases. At 3-92 month follow-up the recurrences arose in 26 (15.75%) from 165 patients subjected to transcutaneous puncture with administration of 96% alcohol for 10-15 min without draining. Another puncture was carried out in 9 (5.56%) patients. The recurrences were seen in all the 11 patients in whom aspiration was not followed by alcohol administration. 7 cases needed repeat puncture. The authors advocate transcutaneous puncture sclerotherapy with the use of 96% alcohol for treatment of symptomatic and large cysts of the kidneys.

Adolescent↗

PubMedDate not supplied

[Transurethral resection in patients with benign prostatic hyperplasia complicated by chronic calculous prostatitis].

Combination of benign prostatic hyperplasia (BPH) with chronic calculous prostatitis aggravates clinical symptoms of BPH and complicated its treatment. Pronounced dysuria, persistent pain are highly resistant to conventional chemotherapy. Prostatic stones promoted emergence of sclerotic and purulent complications impeding surgical treatment of BPH. Unsatisfactory results of transurethral resection (TUR) in BPH with chronic calculous prostatitis are attributed to impossibility to remove all the concrements. Visual control in TUR cannot localize the stones. Deep resection of the prostate at the site of expected stone location elevates the risk of enuresis and impairment of prostatic capsule. Surgical treatment of 16 patients has demonstrated that removal of all the concrements and prevention of the complications are possible under transrectal ultrasound control.

Aged↗

PubMedDate not supplied

[A comparative evaluation of the use of pyeloureterostomy and ureterocystostomy in treating the urological complications following kidney transplantation].

Ureteral stricture and necrosis after allotransplantation of the cadaver kidney were corrected in 14 and 7 patients, respectively. 12 patients have undergone ureterocystostomy, 9 patients--pyeloureterostomy with the recipient's ureter. Shortly after ureterocystostomy anastomosis insufficiency developed in 7 out of 12 patients, after pyeloureterostomy in 1 of 9 patients (p < 0.05). Secondary complications led to the transplants' rejection in 5 of 12 and 1 of 9 patients, respectively (p < 0.05). 2 patients died due to septic complications after ureterocystostomy. Long after surgery stricture in anastomosis and distal ureter occurred in 3 recipients after ureterocystostomy; after pyeloureterostomy (6 months and 2 years) nephrectomy was conducted in 2 cases because of clinical manifestations of pyelonephritis. It is inferred that pyeloureterostomy with the recipient's ureter is preferable to ureterocystostomy in the treatment of ureteral necrosis and stricture following transplantation of the kidney.

Cystostomy↗

PubMedDate not supplied

[The treatment of obliterations of the posterior urethra in men].

The paper presents the analysis of treatment results for 345 patients with posterior urethra obliteration treated in 1981-1996. Of the various methods used, endoscopic operations proved most effective and safe. Two-stage recanalization of the posterior urethra is more sparing than plastic surgery as it does not employ traumatic approach, is shorter, is accompanied but less blood loss, makes postoperative complications less frequent. A novel treatment (endoscopic recanalization of the urethra under transrectal control) is much less traumatic, makes complications rare. Open plastic operations on the urethra should be made only in cases when obliteration of the posterior urethra is combined with urinary fistulas and when femur bones deformation induces urethral deviation.

Adolescent↗

PubMedDate not supplied

[Use of stent-nephrostomy in the treatment of renal transplant urologic complications by percutaneous surgical techniques].

Ureteral complications including stricture of the ureter and necrosis of the ureter with urinoma are the most frequent urological complications after renal transplantation. About 1-12% of recipients suffer from these complications. Percutaneous techniques allow correction of ureteral complications by less traumatic than open surgical operations and sufficiently effective method. Ureteral complications were registered in 20 cases (3.6%) out of 561 renal transplantations carried out in our institute from 1990 to 1995. Only in 5 cases open surgical correction was necessary, 15 patients after percutaneous nephrostomy underwent bougienage and/or balloon dilatation of ureter with further antegrade stenting. In all percutaneous operations special stent-nephrostoma developed in our department was used. Use of the stent-nephrostoma with its further transformation into the ureteral stent has some substantial advantages versus routine stent procedure.

Follow-Up Studies↗