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Biomedical subjects

R Hohenfellner

Publications and source records attributed to R Hohenfellner.

At least 253 records · Page 14Linked to original sources
PubMed1978

The free peritoneal transplant as substitute for the urinary bladder wall.

In 13 rabbits the fundus of the bladder was resected and the defect repaired by a free peritoneal transplant from the lateral abdominal wall. One animal died postoperatively of purulent peritonitis. In the remaining animals the transplant healed with no signs of irritation. The mean reduction of bladder capacity per body weight between the 5th and 18th postoperative week was only 13 per cent. Histologic tests after 5 weeks showed a germinating epithelium on the transplant which was replaced by a fibromuscular lamina after 10 weeks. The successful results of these animal experiments seem to justify the clinical use of free peritoneal transplants. The good healing tendency and matrix function of this tissue permit transplantation of the peritoneum wherever intraoperative defects occur or suture dehiscence may be expected.

Animals↗
PubMed1978

[The continent colon-conduit stoma].

A conduit occlusor is presented consisting of a tube surrounded by foam rubber and covered by a latex membrane, with a polyurethane cap attached to the other end. A valve imbedded in the cap allows voluntary urine drainage. This atraumatic, pneumatic, non-invasive occlusor device was used quite succesfully in 3 volunteers who had had a colon conduit urinary diversion. The device was well-tolerated, leakage was effectively prevented. Further experience, however, will be necessary for final evaluation.

Humans↗
PubMed1978

[Inguinovaginal sling operation in the treatment of female urinary incontinence (author's transl)].

Sling operation have long occupied an established position in the treatment of severe female urinary incontinence and recidivous incontinence. The inguino vaginal sling operation as modified by Narik and Palmrich is described and the operation results for 73 female patients are differentially evaluated. A precise preoperative urodynamic clarification and a previous or simultaneous hysterectomy are prerequisites for satisfactory operation results. In certain instances, this surgical procedure represents a possible method for the restoration of continence even in the case of neurogenic bladder dysfunction.

Female↗
PubMed1977

Long-term followup of children with colon conduit urinary diversion and ureterosigmoidostomy.

Sixty-four children underwent colon conduit urinary diversion because of a neurogenic bladder owing to myelomeningocele and 39 children required a ureterosigmoidostomy because of bladder exstrophy. The average length of followup was 4.6 years after colon conduit and 5.6 years after ureterosigmoidostomy. Colon conduit diversion was secondary in 3 children and ureterosigmoidostomy was secondary in 5. Of the children with a colon conduit 9.4% and of those with ureterosigmoidostomy 12.8% had postoperative surgical complications. Late surgical complications were encountered after colon conduit in 14.5% and after ureterosigmoidostomy in 20%. Of the children with normal renal function preoperatively 8.3% showed late deterioration after colon conduit and 8.7% after ureterosigmoidostomy. Conversely, only 16.7% with impaired renal function preoperatively did not improve at long-term followup after colon conduit. Of the renoureteral units 91% were normal after colon conduit and 95.2% were normal after ureterosigmoidostomy. The colon conduit halted the preoperative pyelonephritis in 74% of 31 affected kidneys.

Adolescent↗
PubMed1977

Ultrasound litholapaxy of a staghorn calculus.

A method for removal of a staghorn calculus from the kidney through 1 channel of a U-tube nephrostomy is presented. An ultrasound lithotriptor provided a safe and quick alternative to surgical treatment.

Female↗
PubMed1977

Followup of irradiated prostatic carcinoma by aspiration biopsy.

Of 66 patients with irradiated prostatic carcinoma 53 were controlled regularly by repeat aspiration biopsy every 6 months. Local sterilization was achieved in 43 per cent but the results of combined radiotherapy (endocrine therapy plus irradiation) were only 8 per cent more favorable than those in patients treated by radiotherapy alone. Thus, endocrine therapy is not warranted before the radiation effect is evaluated. Post-radiation treatment should be determined by the clinical and bioptic findings.

Aged↗
PubMed1977

[Intraluminal balloon occlusion of the renal artery: clinical applications and observations (author's transl)].

A method permitting percutaneous catheterization and temporary balloon occlusion of the human renal artery with a 5-F-Swan-Ganz-Catheter is presented. When properly performed, the arterial occlusion is reliable, low in complications, and less traumatizing to the vessel than external clamp occlusion. The technique was employed in 112 patients for occlusion of the renal artery prior to tumor nephrectomy, for attaining stop-flow conditions for improved nephrophlebography, for preventing the reflux of emboli at transarterial embolisation of inoperable kidney tumors, or, combined with simultaneous hypothermic perfusion via the second lumen of the catheter, in extensive kidney surgery necessitating ischemia. Particularly this last range of application offers new possibilities for in-situ surgery of the kidney, as it renders dissection of the renal pedicle and cumbersome surface cooling of the kidney unnecessary.

Adenocarcinoma↗
PubMed1977

'Diagnostic overkill?' An analysis of 88 negative renal angiograms.

11.3% of 776 renal angiograms evaluated retrospectively displayed normal findings. The main reasons which had led to the misuse of angiography in our cases were: technically poor urograms, incorrect interpretation of anatomical variations and the lack of other examinations associated with the urogram. A diagnostic plan including all less invasive and dangerous procedures is proposed placing sonography in central position.

Evaluation Studies as Topic↗
PubMed1977

[Bladder carcinoma: therapeutic concept of the Urology Department of the University Hospital, Mainz].

A therapeutic concept based on tumor staging and grading is presented: T0N0M0 - urine cytology positive - cystoscopy every 3 months. Transitional cell carcinoma (90%): T(iS)N0M0 - carcinoma in situ - cystoscopic biopsy every 3 months. Cystectomy with commencing tumor infiltration. T1N0M0 (80% of all bladder tumors): T1N0M0G0 - TUR; cystoscopy every 3 months. T1N0M0G1-3 - TUR; control-TUR 6 weeks later with systematic biopsy. G3 with tumor recurrence - cystectomy. T2N0/N1M0; G1-2 - TUR; local chemotherapy (adriamycin). G3 - cystectomy; high voltage treatment in inoperable patients. T4NxMx - symptomatic-palliative therapy: TUR, urinary diversion. Squamous cell carcinoma (2-5%): as transitional cell carcinoma; with high voltage therapy adjuvant chemotherapy using bleomycine. Adenocarcinoma (2-3%): as transitional cell carcinoma; cystectomy including part of the anterior abdominal wall and umbilicus. Immunostaging (assessment of the immunocompetence) should be part of the diagnostic procedures and follow-up examination.

Adenocarcinoma↗
PubMed1977

[Pelvic lymphadenectomy as a staging operation for prostate carcinome (author's transl)].

As a staging operation for prostate carcinomas in clinical stages B (6/27) and C (21/27), 27 pelvic lymphadenectomies were performed. In stage B, a radical prostatectomy was performed; patients in stage C also received radiation. Preoperatively, lymphographic and histologic findings that were in agreement were available for only 74%. The immediate mortality was 0%, the postoperative morbidity 29%.

Abscess↗
PubMed1977

[Vesicorenal reflux (author's transl)].

Antireflux procedures show high efficiency and relatively few technical complications. A tabulated comparison between the intravesical procedure (Politano-Leadbetter) and the extravesical procedure (Lich-Grégoir) reveals an overall success rate of 80%. To simplify the nomenclature, the term primary refluxing ureter is suggested for cases with a freely draining IVP and primary obstructive ureter for a dye collumnating dilated ureter. The indication for antirefluxplasty is divided into urgent cases and those with secondary priority, with immunologic tests providing helpful criteria.

Child↗