PubMed Health⌕ Search

Biomedical subjects

D Hauri

Publications and source records attributed to D Hauri.

At least 145 records · Page 8Linked to original sources
PubMed1984

Transluminal dilatation of experimental hydronephrosis in dogs: acute and chronic effects, haemodynamic changes, and histological findings.

In the present study the feasibility and effectiveness of transureteral dilatation with a double-lumen balloon-tipped dilatation catheter was investigated. In 6 dogs with experimentally induced unilateral fibrotic stenosis and hydronephrosis a total of 13 dilatations were performed through a cutaneous ureteroneostomy. The stenosis diameter could markedly be distended from 1.7 +/- 0.9 to 4.8 +/- 1.6 mm (p less than 0.001). The pyelon size changed not significantly during the intervention. Follow-up urographies 1 week after dilatation revealed partial or total restenosis in all but 2 dogs. The stenosis diameter had decreased by 2.6 +/- 1.5 mm (p less than 0.01). The mean pyelon size changed only slightly (28.2 +/- 14.7 vs. 26.1 +/- 6.2 cm2). In the 2 dogs with persistent distension of the stenosis a reduction in pyelon size was achieved. Blood pressure during acute ureteral ligation showed no change. Follow-up studies after 1 week revealed a significant fall of the mean arterial pressure from 100 +/- 22 to 83 +/- 19 mm Hg (p less than 0.005), which was also seen at the long-term follow-up in 5 dogs 13 +/- 8 weeks after ureteral ligation. Histological analysis showed mild to severe inflammation and distension of the collecting system and mild to moderate inflammation, atrophy, and glomerular cysts in the renal parenchyma. Interestingly, the 2 dogs with a successful result of dilatation showed no relevant inflammation in the dilated stenotic segment. In conclusion, transureteral dilatation of experimental ureteral stenosis with a balloon catheter proved to have an impressive acute effect.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMed1983

A new concept of priapism based on the results of arteriography and cavernosography.

Four patients with priapism - 3 with idiopathic and 1 with post-traumatic etiologies - were examined by arteriography and cavernosography. The findings of these examinations as well as distinct clinical findings suggest that there are 2 different types of priapism. One is characterized by severe blood stasis within the corpora cavernosa with resulting compression of the deep arteries of the penis and reduction of arterial blood flow. In the other type, arterial flow into the corpora cavernosa and drainage into the veins are substantially increased. In this type, long-standing priapism does not seem to produce fibrosis of the corpora cavernosa with resulting impotence.

Adult↗
PubMed1983

Erection and priapism: a new physiopathological concept.

For normal erection two mechanisms are essential: the first provides increased arterial inflow, most probably this is obtained due to the activity of the intimal cushions within the arteriae helicinae and within the shunt vessels. The second mechanism uses increased arterial blood flow; this could be obtained due to the activity of the trabecular muscle fibers of the corpora cavernosa. In consequence, we would deal with two different types of priapism: one type--high-flow priapism--occurs at the level of the arteriae helicinae and the intimal cushions and provokes a high-flow situation, and the second type, with blood stasis in the corpora cavernosa, occurs at the level of the trabeculae due to persistent contraction of the smooth muscle fibers. The prognosis of the second type is much less favorable and should be cured by surgery within the first 48 h.

Humans↗
PubMed1983

[Vital complications in multicystic kidney degeneration (multicystic dysplasia)].

We present 2 cases from our clinic with complications due to unilateral multicystic dysplastic kidneys: 1 case with arterial hypertension, another case with a renal carcinoma in a multicystic dysplastic kidney. Compared with the 62 cases already published, these are the 2nd case of hypertension and the 3rd case of carcinoma in multicystic dysplastic kidneys. Because of such complications nephrectomy of multicystic dysplastic kidneys is indicated.

Adenocarcinoma↗
PubMed1983

[The trigone].

The embryologic genesis is important for understanding the structure of the trigone. Anatomy and innervation explain its function, thereby enabling us to differentiate the various forms of reflux.

Edema↗
PubMed1982

Arteriography of the penis in secondary impotence.

Twenty-four men aged 20-67 years (mean 42 years) were examined by selective arteriography for secondary impotence. The angiographic technique used as well as the normal anatomy and its variations are described. Arterial occlusive disease of vessels leading to the penis and the corpora cavernosa was found in 71% of the patients examined. This high incidence of arterial occlusive disease corresponds with the findings of other authors. The significance of these findings is discussed. In our limited experience of 3 patients, arterial anastomosis from the inferior epigastric artery to the corpora cavernosa has not been successful.

Adult↗
PubMed1982

[Incontinence following prostatectomy].

Urinary continence is guaranteed by many factors. The most important are an intact bladderneck and a normally operating proximal urethra. Predominantly the smooth muscular system is involved. The striated external sphincter is primarily not responsible for continence. At prostatectomy the bladderneck and a great part of the smooth muscles of the proximal urethra inevitably are removed. Postoperatively only a small distal segment of the posterior urethra continues to guarantee continence. This segment may be changed by the growth of the prostate and can be destroyed by an untrained operator. Then, urinary incontinence is the result.

Humans↗