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M A Reuter

Publications and source records attributed to M A Reuter.

14 recordsLinked to original sources
PubMed2006

[The low hydraulic pressure transurethral resection of the prostate results in 340 patients with great adenomas].

INTRODUCTION: the transurethral resection of prostate TURP is the elective treatment for the small and medium adenomas. In this study they analyse the effectiveness, the results and the postoperative morbidity in the resection of the great adenomas. PATIENTS AND METHOD: We study 340 patients with great adenomas and symptomatic infravesical obstruction that were operated with the low hydraulic pressure RTUP between August of 1999 and June of 2006. RESULTS: Average Age of the patients 69 years (range 51-89). Prostate volume by TRUS, 107 ml (70-204). PSA 7,94 ng/ml (0,71-26,4). Weight of the resected fragments: 74,5gr. (50-160), time of the intervention 65 min. (35-155), postoperative urethral catheterisation 1.7 days (1-8), suprapubic derivation 6.5 days (5-15), the duration of hospital stay after surgery were 8 days (7-16), peak flow pre-op. 11.2 ml/sec. (5-15,7), post-operative 19.7 ml/sec. (7-41,3). There were no cases of TURP syndrome in this group. Operative complications: Urinary infection without fever (bacteria >100.000) 95 patients (27.9%), bladder derivation by preoperative urinary retention 53 patients (15,6%). 18 patients (5,3%) with postoperative urinary retention. 11 patients (3,2%), with infection and fever >38 degrees C. 7 patients (2%) with postoperative bladder bleeding, 2 patients (0,6%) with urethral lesion. 1 patient (0.3%), with massive scrotal hematoma (after vasectomy). Control of the pre and post operative hemoglobin: Hemoglobin pre-op 15 g/dl (12-19,3), hemoglobin post-op 11,5 g/dl (7,6-16,4), difference of (- 3,5g/dl) 23,3%. In only 29 patients (8.5%) it was necessary to carry out a sanguineous transfusions (heterolog) of 2 to 4 EC (500 ml), the TRUS was 125 ml, weight of the fragments 90 gr. (52-140), the hemoglobin pre-op was 14,72g/dl and post-op of 8,8g/dl with a difference of (- 5,92g/dl) 40.2%. CONCLUSIONS: The video assisted low hydraulic pressure TURP, is an effective method in the surgical treatment of great prostate adenomas. The severe postoperative complications are little, and in 311 patients (91.5%) it was not necessary sanguineous transfusion. The stationary treatment and the urethral catheterisation is smaller in comparison with the open adenomectomy.

Aged↗
PubMed2002

Understanding of hazardous waste incineration through computational fluid-dynamics simulation.

Rotary kiln incinerators are widely used in the incineration of hazardous wastes of various types. However, the complex transport and chemical processes within the kiln system are still not well understood. The complete destruction of hazardous compounds depends very much on gas mixing behavior of different air and waste streams, the distribution of gas temperature and residence time within the kiln and the secondary combustion chamber (SCC). Due to large variations of waste types and difficulties in feed characterization (physical, chemical and thermal properties), the incineration process meets great challenges in a smooth operation, with substantial fluctuations of gas temperatures within the system. The temperature fluctuations lead to uncertainties in the process chemistry and difficulties in emission control. The newly enforced regulations from the European Union with stricter emission levels require a better understanding of the incineration process and improved process control for lower emissions and a better environmental impact. In order to get better understanding of the incineration process within the rotary kiln system, research was carried out to study the kiln behavior in relation to better process control. One of the focuses was on the process simulation by using Computational Fluid-dynamics (CFD) to characterize gas flow, temperature distribution and waste combustion in the rotary kiln incinerator. Temperature measurement of the operating rotary kiln incinerator at AVR-Chemie, located at the Rotterdam harbor in The Netherlands, was conducted to validate the CFD model and to provide the information to kiln operators at AVR. This paper will address the environmental issues related to the hazardous waste incineration, and summarize the results from the current research project for the simulation of gas flow and mixing, combustion heat transfer, and new ideas to use CFD simulation results for process control of an incineration plant.

Air Movements↗
PubMed1999

The development of urological endoscopy in America.

This article deals with the history of medicine in American urology, where endoscopy is a very important subject. The development of endoscopy in America unrolled in three phases: the acquisition of European techniques and instruments, realization of the ideas of American researchers, and original creations that forwarded endoscopy considerably. European instruments were acquired in the nineteenth century, culminating in the instruments developed by Max Nitze. When Wappler started the production of endoscopes in 1905, they were the basis for the development of numerous modifications and innovations such as electrosurgery, developed by Beer in 1910, with the Resonator created by Wappler; the resectoscope, invented by Stern and McCarthy in 1931; "cold light" using glass fibers for illumination, described by ACMI in 1960; the flexible fiber ureterorenoscope, described by Marshall in 1960; and fluorescence cystoscopy, introduced by I. M. Bush and W. F. Whitmore in 1964.

Diagnostic Techniques, Urological↗
PubMed1992

Prostatic hyperplasia over 80 grams weight, is transurethral resection an adequate procedure? Results of a prospective study.

A prospective study of transurethral resection with continuous low pressure irrigation was undertaken to find out, whether large prostates can be operated transurethrally without undue risk. Since 1986, the beginning of the study, 121 prostates with adenomas over 80 grams weight (> 80 g group) were resected. The mean age of the patients was 70.1 years, the mean weight of the resected prostate tissue was 104 grams in 66 minutes. The postoperative mortality was below 1% (1 patient). 17 patients (14%) needed blood transfusion, 11 patients had peroperative hemodilution. Even with large prostate, considering the rather high mean age of the patients treated, there is no considerably elevated operating risk, when large prostates are resected transurethrally. It however has to be emphasized, that this is achieved only with continuous low pressure irrigation and the loop of a 28 Fr. standard resectoscope in combination with an automatically regulated electrosurgical unit.

Aged↗
PubMed1991

[Not Available].

Explore the source record for details and available documents.

Equipment and Supplies↗
PubMed1991

[Total transurethral electroresection of carcinoma of the prostate].

Transurethral resection of the prostatic carcinoma was performed here most completely at a time already when radical surgical prostatectomy was not a rather new procedure. The preliminary evaluation of 150 cases of all stages (T1-4) showed a 5 year survival rate of almost 80% with post-operative complications comparable to transurethral prostatectomy of the adenoma.

Aged↗
PubMed1989

[Transurethral low pressure prostatectomy. Technic, blood loss and water syndrome].

The new procedure for transurethral prostatectomy (TURP with physiologic low pressure irrigation and continuous aspiration of irrigant) reduces complication and mortality in respect to surgical prostatectomy: In 2.500 TURP clinical significant pulmonary embolism was not realised, mortality was 0.3%. The average blood loss was 238 cc. by a weight of 44.8 g, blood transfusion were necessary in only 4%. Low pressure TURP can be performed in most high risk patients, this is not true for open surgical prostatectomy, which has a rate of complications up to 25%. Postoperative recovery and late results are definitely improved by low pressure TURP, teaching is facilitated.

Aged↗
PubMed1983

[Diagnostic and surgical endoscopy of the ureter and kidney. Initial experiences with uretero-renoscopy].

The new method of uretero-renoscopy with rigid endoscopes has extended the possibilities for endoscopic diagnosis and procedures in the ureter and kidney. Our first experiences in 37 patients are absolutely positive even if one considers the initial difficulties passing the ostium. This method, introduced by E. Perez-Castro can be recommended to skilled endoscopists if the basic principles of endoscopy are strictly observed (no hard pushing of instruments, continuous optical and x-ray control with contrast medium and physiologic low pressure irrigation). This advice must be observed even more so in operative uretero-renoscopy, where instruments and techniques are still at an initial stage. It was possible to extract transurethrally nearly half of the ureteral calculi prepared for surgical procedure. Biopsy, coagulation and other methods used in connection with operative cystoscopy can be applied.

Adult↗
PubMed1982

Clinical value of different methods for determination of acid phosphatase in prostatic cancer.

The availability of a radioimmunoassay (RIA) and an enzyme immunoassay (EIA) for the prostate specific acid phosphatase required a study to compare these techniques with the conventional colorimetric assay. Our study is based on examinations of 188 normal persons and 136 patients with carcinoma of the prostate. The advantage of the immunologic methods - RIA and EIA - lies in their stable immunologic activity and their high specificity. However, RIA and EIA are not screening methods for incidental carcinoma because of their low sensitivity for stage-A tumors. Their good sensitivity at lower ranges of concentration makes them suitable for checking the course of a prostatic carcinoma during therapy. The level of prostatic acid phosphatase may allow conclusions about intra-or extracapsular growth of the prostatic carcinoma.

Acid Phosphatase↗
PubMed1981

[Antibacterial treatment of urinary tract infections with co-tetroxazin (sterinor)].

In 100 patients with urinary tract infections the new benzyl-pyrimidine/sulphonamide combination Co-tetroxazin (Sterinor) was tested concerning its in vitro and in vivo action. In spite of the heterogenous cases (pyelonephritis 16%, obstructions 15%, prostatitis respectively urethritis 12% and cystitis 53%) and the relatively high average age (about 40% above the age of 60) a high therapeutic success was achieved. The clinical symptomatology improved up to 96% (respectively 83% without anymore pathological findings). This in vivo action correlated very well with the in vitro action in the agar diffusion test: fully sensitive 79%, moderately sensitive 15% and resistant only 6%. It is worth mentioning that the in vivo results with Sterinor were obtained with only 1/3 of the usual substance load (dosis) of the other benzylpyrimidine/sulphonamide combinations. This is due to the more favourable pharmacokinetic properties. Particularly in chronic patients, multi-morbidity and in elder patients this is clinically relevant. With this proven comparable clinical effect Co-tetroxazin is to be specified therefore to be more effective pharmacologically.

Adult↗