Biomedical subjects

M Künkel

Publications and source records attributed to M Künkel.

5 recordsLinked to original sources

PubMed1993

[Laparoscopic surgery in urology. Problems--possibilities--perspectives].

To date, there have been few indications for laparoscopic surgery in modern urology. The operations already tried have posed a challenge because they require skills with this new technique that cannot be acquired by just performing this type of surgery, because of the few operations possible in urology. Thus, a cooperative arrangement was made with the surgical department in our hospital to form an interdisciplinary team consisting of a surgeon and a urologist; the team performed all laparoscopic surgery on a rotational base. Within a few months' time, this gave us sufficient experience with this new type of surgery to be able to perform even large urological operations laparoscopically.

Animals↗

PubMed1990

[Long-term results following percutaneous reanastomosis of complete ureteral occlusion].

The combination of percutaneous access to the kidney with ureterorenoscopy makes reanastomization of completely occluded ureters possible. The method has proved primising in cases where excessive previous surgery means that reintervention at the same site can be expected to be difficult. Up to now, 20 patients with complete ureteral occlusion have been successfully operated upon by endoscopic means, and 11 of them have been followed-up for more than 6 months (av. 26.1 +/- 13.4 months). In all these patients, the reanastomized ureter has remained patent.

Adult↗

PubMed1990

[Long-term results following percutaneous pyeloplasty].

Since 1982, 201 patients have undergone percutaneous incision for congenital or secondary obstruction of the pyeloureteral junction, and 171 of them have now been followed up for up to 63.3 months (12.5 +/- 11.5 months on average). All preoperative data, such as clinical and laboratory findings and results of i.v. urography and isotope nephrography, were usually controlled 6 months postoperatively. Depending on the degree of preoperative hydronephrosis, we found good and very good results in 78% of the patients followed up. Results were better in patients who had had primary stenoses, and younger patients had better outcomes than older ones. The treatment turned out during follow-up to be more successful for short stenoses than for longer ones. When pelvic or high ureteral stones were present the long-term results were less good. There were 16 patients with recurrences of obstruction, 15 of whom underwent another, this time successful, percutaneous pyeloplasty. Only 1 patient required open plastic surgery after three unsuccessful attempts at endoscopic surgery. We conclude that percutaneous pyeloplasty as we perform it is a safe endoscopic procedure that can produce reproducibly good long-term results comparable to those of open plastic surgery for primary pyeloureteral obstruction. In the case of secondary stenoses, however, a percutaneous approach should always be tried first, if in any way possible.

Adolescent↗

PubMed1987

[Percutaneous reanastomosis of a transplanted kidney].

A case of a successful percutaneous reanastomosis of a transplanted kidney is reported. The kidney had already been operated on several times. The kidney-ureter anastomosis was occluded. Using a combination of ureteroscopy and the percutaneous technique, the old anastomosis was bypassed and a new one was made.

Adult↗

PubMed1987

[Percutaneous pyeloplasty. Indications, technic, results].

The indication for and technique of the percutaneous operation of strictures at the ureteropelvic junction in 117 patients are discussed. The results in 66 followed up cases are presented in detail. The new method was found superior to open surgery in cases of secondary (acquired) stenoses and a success rate of 89% can be expected. The results of its use for congenital stenoses are not as good (73%), however, if this simple and safe technique does fail, open plastic surgery can still be performed.

Adolescent↗