Biomedical subjects

G Weyand

Publications and source records attributed to G Weyand.

7 recordsLinked to original sources

PubMed2002

[Anal sphincter-CT and dorsal sphincteropexy - a new approach in therapy of obstructive defecation disorder].

The dysplasia of anal sphincter represents an obstructive defecation disorder. The disease is known as "anterior displaced anus" in pediatric surgery. An anorectal malformation with missing dorsal osseous fixation of the sphincter complex is the underlying cause. Beyond clinical symptoms and examination result (anterior displaced anus with palpable dorsal gap) the defect can be visualized by computered tomography. A surgical correction is possible by the simple intervention of dorsal sphincteropexy. In our trial with 48 patients (male n = 12, female n = 36, mean age 51 +/- 17 years, follow-up in 39 patients) a significant improvement of defecation could be achieved in 46 % of the patients. In correlation to a good clinical outcome a significant reduction in the defecation score was observed. 10 % of the patients had only small changes in symptoms. However, the proportion of dissatisfied patients was relatively high with 44 %. In this group patients with long-standing chronic constipation and laxative abusus were found more often and the rate of previous anal or abdominal surgery was quite higher. Dissatisfied patients showed a higher variation in symptoms of pelvic floor disorders (e. g. anal pain syndrome) besides the rectal evacuation disorder. In addition to the heterogenity of symptoms chronic alterations of pelvic floor structures might create worse results in patients with chronic constipation. In spite of a lot of publications dealing with the functional anatomy of the pelvic floor only a few investigations on the dorsal sphincter dysplasia in patients with rectal evacuation disorder are found in the literature. Further investigations on this disorder are necessary.

Adolescent↗

PubMed2002

[Anal pressures after stapler hemorrhoidectomy - a prospective analysis of 33 patients].

PURPOSE: Determination of the effects of staplerhemorrhoidectomy as a new method of surgery, type of staplers and way of anal retraction on anal pressures. PATIENTS AND METHODS: In 33 patients (mean age 56 ys.) with third degree hemorrhoids who underwent staplerhemorrhoidectomy in the Marienhospital Gelsenkirchen between 1998 and 1999, anal resting and squeezing pressures were measured before and after the operation. On an average the postoperative examination was performed 47 days after operation. RESULTS: Anal resting pressures decreased significantly from 69 (23) to 58 (18) mmHg (p < 0.01) in contrast to the anal squeezing pressures (171 (60) and 170 (58) mmHg). There was a relatively greater decrease in anal resting pressure using a Parks' retractor in comparison to the use of a vaginal speculum. The decrease of resting pressure did not depend on the type of stapler used (Ethicon(c) SDH 33, n = 14 and Autosuture(c) CEEA 31, n = 19). CONCLUSION: Hemorrhoidectomy using a circular stapler leads to a significant reduction of the anal resting pressure, whereas squeezing pressures remain constant. The reduction is more pronounced if a Parks' retractor is used.

Adult↗

PubMed2002

[Sigmoidoperianal fistula associated with diverticulitis and Cul de Sac situation--diagnostics and therapy].

We report on the case of a 64-year-old female patient who presented herself in our outpatient clinic because of a perianal fistula with recurrent abscesses. We describe the step diagnostics and the surgical treatment of the causal sigmoido-perianal fistula with diverticulitis and Cul de sac situation. Clinical examination, fistulography, colonoscopy and MRT were part of the precise representation and preparation for the high anterior rectosigmoidal resection with simultaneous rectopexy according to Sudeck which were performed without complications. The sigmoidoperianal fistula must be taken into account as a differential diagnosis of a recalcitrant high perianal fistula.

Abscess↗

PubMed1996

[Defecation flowmetry. A new study technique for evaluating the evacuation function of the rectum].

In a prospective study carried out on 78 patients with chronic constipation (31, with slow transit, 47 with obstructive defecation disorders) the evacuation function of the rectum during defecation was assessed by defecoflowmetry. These patients were compared to a control group of normal volunteers (n = 32). The following parameters were evaluated: defecation and retention volume, defecation fraction, defecation time, maximum flow, mean flow rate and time to maximum flow. As expected, there was no difference in evacuation function between the group of patients with slow transit and the control group. Significant differences, however, existed between the two types of constipation, as well as between obstructive defecation disease and controls, regarding all parameters mentioned above. Evacuation function depends neither on rectal neck pressure nor on intrarectal pressure. In patients with obstructive defecation disorders, three subgroups were discernable: one with prolonged time of defecation and satisfactory evacuation, one with prolonged time of defecation and poor evacuation, and one small group of patients who were not able to defecate. Each group is based on a different underlying pathomechanism. We conclude that changes in evacuation function of the rectum refer either to volume or to time of defecation, or to both. Changes are found only in obstructive type constipation, not in slow transit constipation. Therefore, defeconflowmetry as a dynamic procedure can be used in screening for the classification of chronic constipation.

Adult↗

PubMed1996

The risk of infection of three synthetic materials used in rectopexy with or without colonic resection for rectal prolapse.

The incidence of infection was compared after the use of synthetic implants in abdominal rectopexy with (145 patients) and without (77 patients) synchronous colon resection. Three different materials were used, including polyvinyl alcohol (Ivalon) (n = 87), polyglactin (Vicryl) mesh (n = 109), and Gore-Tex (n = 26). In patients have colonic resection two (3.7%) pelvic infections occurred in the polyvinyl alcohol (Ivalon) group, one abdominal infection with polyglactin (Vicryl) and none with Gore-Tex. In the group without colonic resection, two patients (3.0%) developed infection after polyvinyl alcohol (Ivalon) insertion with one occurring after polyglactin (Vicryl) or Gore-Tex. Overall mortality was 0.4%. Follow-up ranged from 3 to 120 months. There were 3 (1.9%) cases of recurrent prolapse in 151 patients with full-thickness rectal prolapse.

Adult↗

PubMed1996

[Endo-anal and transperineal continence preserving closure techniques in surgical treatment of Crohn fistulas. A prospective long-term study of 186 patients].

UNLABELLED: Our aim was to review the results and to investigate the prognosis in a prospective study of aggressive surgical treatment in 186 patients (59% women, 41% men, age 18 to 65 years) treated during the past 9 1/2 years by conventional laying open of the fistula (n = 71), endorectal advancement flap repair (n = 89) and by fistulectomy without internal sphincterotomy (n = 37). 54 (29%) patients had intersphincteric, 57 (30.5%) transsphincteric, 10 (5.5%) suprasphincteric, 37 (20%) low rectovaginal and 28 (15%) had complex fistulas without internal opening. Four sphincter saving techniques were performed by the high and fistulas (n = 89) with primary occlusion of the intraanal ostium and endorectal mucosal flap (n = 29), endorectal advancement flap (n = 41), anodermal flap (n = 8) and transperineal repair with levator interposition (n = 11). Postoperatively 18 cases (20.2%) of suture leakage occurred, 27% in the mucosal flap group, 17.6% in the advancement flap group, 12.5% in the anodermal group, and 27% in the transperineal group. A complete primary healing of perianal wounds was noted in 73% of the patients within 6 months. The presence of rectal disease (n = 77) did not adversely influence the rate and duration of healing. Persistent or recurrent fistula occurs in 29 patients (15.6%), 22% in the sphincter saving group, 4% in the intersphincteric group and 32% in the complex type of fistulas. Disturbance of continence was observed in 9 patients (4.8%). Postoperatively, there was no significant change in resting anal pressure and maximum voluntary conctraction pressure in any fistula group (n = 104). CONCLUSION: The presented clinical and functional long term results of patients with Crohn's fistulas underline the importance of experience in the treatment of perianal fistula disease. A successful treatment depends primarily on an aggressive therapeutic strategy and the appropriate method of operation.

Adolescent↗

PubMed1995

[What is the role of the pubococcygeal and puborectal muscles in patients with obstructive defecation disorders? An electromyography study].

BACKGROUND: We believe that the M. levator ani plays little or no role in obstructed defaecation, and that the concept of "paradoxical" puborectalis muscle activity is misleading. The main aim of the study was to investigate the function of the pubococcygeal muscle during simulated defaecation and to compare this with the electromyographic activity of the puborectal muscle. METHODS AND RESULTS: In a prospective electromyographic study of 18 women (average age 53 years) with obstructive defecation disorder the activity of the pubococcygeal muscle and the puborectal muscle was investigated at rest, during contraction and straining. The control group consisted of 18 healthy women with an average age of 54 years. The function of the pubococcygeal muscle and the puborectal muscle was largely the same in both, study and control group. No statistically significant differences in the amplitude were found between the two groups at rest during contraction and maximum strain. CONCLUSION: We therefore conclude that the increase in activity of the voluntary muscle of the pelvic floor observed on electromyography during defaecation does not indicate automatically a pathologic condition but is a possible functional state at this moment.

Adult↗