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Biomedical subjects

R Tscholl

Publications and source records attributed to R Tscholl.

54 records · Page 3Linked to original sources
PubMed1976

Investigation of urine transport in the ureter of the pig by x-ray videodensitometry. II. The effect of an increasing obstruction on velocity, rhythm, and efficiency of the contraction waves.

The effect on an increasing acute obstruction on the motility of the ureter was analyzed by means of X-ray videodensitometry. The mean wave velocity decreases and the efficiency of the individual contraction is reduced. The lumen of the ureter is no longer closed completely and an increasing fraction of the urine bolus flows backward. The regurgitation can be seen cineradiographically and assessed semiquantitatively by densitometry.

Absorptiometry, Photon↗
PubMed1975

[Priapism--pathogenesis and therapy].

Priapism can occur when pathologic stimuli (e.g. lesions of the cervical spinal cord) cause prolonged erection, and when normal stimuli under pathologic circumstances (e.g. sickle cell disease, leukemia) produce prolonged erection. As any priapism eventually leads to permanent impotentia coeundi, immediate therapy is absolutely indicated. All unspecific procedures are useless and merely waste time. The priapism in connection with hematologic diseases must be countered by conservative specific therapy (sickle cell disease by blood transfusions; leukemias by cytostatic drugs). All other forms of priapism must be treated by surgery as soon as possible. The operation of choice today perineal bilateral shunt between the corpus cavernosum and the corpus spongiosum

Anemia, Sickle Cell↗
PubMed1975

The physical properties of polyglycolic acid sutures (Dexon) in sterile and infected urine.

In a series of in vitro tests the time-dependent alteration of the resistance to breaking and of the extensibility of catgut and of polyglycolic acid sutures (Dexon) was examined. The threads were incubated in sterile and infected urine up to 10 days at 36 C. In the sterile urine environment Dexon dissolved on the 6th day and in the infected urine on the 3rd day. Catgut did not dissolve at all in the sterile urine and in the infected urine it dissolved only on the 8th day. In view of these results the use of Dexon in the urine environment may cause some concern, especially in an infection exists.

Bacteriuria↗
PubMed1975

[The effect of long term antibacterial treatment following prostatic surgery. A comparative study in 96 patients].

In a prospective, randomized study in 96 patients undergoing prostatic surgery (92 patients) and extensive transurethral bladder surgery (4 patients) all patients received postoperative antibiotics for five days. Following this the patients were divided into two groups. Group A received Bactrim for three months and Group B received a placebo for three months. Urine cultures were carried out six times during this three month period. In Group A, 13 patients (25%) were infected preoperatively and 9 patients (17%) postoperatively. In group B, 10 patients (22.8%) were infected preoperatively and 9 patients (20.5%) postoperatively. There was no significant difference between the results in the two groups. These and other results allow the following conclusions: 1. Routine postoperative long term treatment with antibacterial substances has no significant effect on the postoperative urinary tract infection. 2. Long term preoperative indwelling catheter treatment increases the incident of postoperative urinary tract infection. This can be prevented by operating patients early following the first urinary retention. It is confirmed that there is an increased risk of persistent urinary tract infection in patients with neurogenic bladder disturbances, preoperative ureteral dilatation, diabetes mellitus and various other complications.

Catheters, Indwelling↗