Biomedical subjects
Publications and source records attributed to H Raatzsch.
In 1987 a total of 322 endourological procedures with punctual use of x-rays were performed at our ultrasonographic-radiological working table. The personal-dosimetric supervision of 4 surgeons who performed the interventions was analyzed in dependence of our local dosimetric realities. The radiation exposure of the surgeon and the possibilities of supervision and reduction of the exposition are presented.
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In a retrospective study of 303 patients with renal cell carcinomas the prognostic influence of the percutaneous transvasal embolization of the renal artery was demonstrated. In form of the life-table-method we compared statistically the survival rates of preoperatively or palliatively embolized patients with such ones who were only nephrectomized or treated only symptomatically. In the tumour stages T2 and T3 the preoperative percutaneous transvasal embolization leads to a clearly higher survival rate; in stage T2 statistically significant. After palliative embolization the improvement of the prognosis is evident compared with the inoperable patients who were treated only symptomatically. The prognosis after palliative preoperative percutaneous transvasal embolization and retarded nephrectomy is not worse than after preoperative percutaneous transvasal embolization and immediate nephrectomy. The effect of the preoperative and palliative embolization improving the prognosis should incite all partners who up to now objected to this therapeutic method to reconsider their therapy concept.
With the help of a prospective study of 100 patients, in whom an operation of the prostate was taken into consideration (TUR, adenomectomy, radical operation), the clinical value of the suprapubic sonography of prostate and urinary bladder is presented. The determination of the size of the adenoma and the residual urine is particularly dealt with. Clinical, transurethral and radiological examination methods served as reference methods, in addition to this the weight of the specimen. The study resulted in a high accordance between sonography and reference methods. The fully painless and undangerous suprapubic sonography and prostate and urinary bladder become an integrated constituent of the urological diagnostics and replaces a large part of hitherto performed transurethral examination methods.
The use of formaldehyde gas is an alternative for the sterilization of thermolabile instruments. A report is given on the effectivity of a sterilization medium the production of which is not dependent on any imports, and on the suitability of sterile packaging materials produced in the GDR for this process. In further studies the formaldehyde residue on catheters and tubing used in urology following sterilization is measured. The question of whether formaldehyde residue on catheters is of toxicological significance is examined.
Histomorphological studies on 40 prostatectomy and 122 lymphadenectomy preparations from patients with carcinoma of the prostate revealed the limits of prostate biopsy in assessing the volume of the tumour preoperatively, of capsule infiltration and of tumour histology in general. Multiple foci, the exclusion of dedifferentiated portions of a tumour and the lack of correlation between the histology of primary tumours and the degree of lymphogenous metastasis are limiting factors in the individual use of the histology of primary tumours for grading purposes. Our studies furthermore revealed the necessity for differentiated consideration of the category T3 and for intraoperative microscopic examination of resection margins in total prostatavesiculectomy.
During a twelve years period of treatment 519 strictures of the urethra were operated by means of several methods. Apart from a short analysis of the number of patients the results of the individual groups of treatment are evaluated and it is referred to the advantage of a urethroplasty at the same time with subcutaneous pedicle graft.
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It is reported on a new one stage urethroplasty which, using a subcutaneous pedicle graft, is based on the spontaneous formation of a tube of a urethra-skin-strip submerged into the depth. The procedure was tested on a clinical material of 140 cases and is recommended as method of choice in strictures of the urethra.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.