S Willis

Summary

Affiliation: University Hospital
Country: Germany

Publications

  1. ncbi request reprint [Reconstructive surgery after anterior resection of the rectum]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen, Aachen
    Chirurg 75:13-20. 2004
  2. ncbi request reprint [Effect of biofeedback and electrostimulation on sphincter function in fecal incontinence]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Zentralbl Chir 129:211-5. 2004
  3. ncbi request reprint Does botulinum type-A toxin affect motor activity after proctocolectomy and ileal pouch-anal anastomosis? An experimental study in dogs
    S Willis
    Department of Surgery, Technical University Aachen, Aachen, Germany
    Eur Surg Res 36:165-71. 2004
  4. ncbi request reprint [Open colon surgery]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Chirurg 76:1073-81. 2005
  5. ncbi request reprint Defecation mechanisms after proctocolectomy and ileal pouch--anal anastomosis in dogs
    S Willis
    Department of Surgery, Technical University Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Int J Colorectal Dis 19:228-33. 2004
  6. ncbi request reprint [Assisted death in daily surgical practice--an interdisciplinary discussion with examples]
    S Willis
    Chirurgische Universitatsklinik und Poliklinik, RWTH Aachen
    Chirurg 74:844-51. 2003
  7. ncbi request reprint [Functional results and quality of life after proctocolectomy and ileal J-pouch-anal anastomosis for ulcerative colitis]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Zentralbl Chir 128:663-8. 2003
  8. ncbi request reprint Defecation mechanisms after anterior resection with J-pouch-anal and side-to-end anastomosis in dogs
    S Willis
    Department of Surgery, RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Int J Colorectal Dis 22:161-5. 2007
  9. ncbi request reprint [Leakages after surgery of the lower gastrointestinal tract]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Chirurg 75:1071-8. 2004
  10. ncbi request reprint Childbirth and incontinence: a prospective study on anal sphincter morphology and function before and early after vaginal delivery
    S Willis
    Department of Surgery, Technical University Aachen, Pauwelsstrasse 30, Germany
    Langenbecks Arch Surg 387:101-7. 2002

Collaborators

Detail Information

Publications27

  1. ncbi request reprint [Reconstructive surgery after anterior resection of the rectum]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen, Aachen
    Chirurg 75:13-20. 2004
    ..The transverse coloplasty pouch may allow pouch reconstruction in patients in whom this is currently impossible, but long-term follow-up is not yet available...
  2. ncbi request reprint [Effect of biofeedback and electrostimulation on sphincter function in fecal incontinence]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Zentralbl Chir 129:211-5. 2004
    ..Therefore it should be the first choice in the therapy of idiopathic fecal incontinence. A training period of 3 months seems to be sufficient...
  3. ncbi request reprint Does botulinum type-A toxin affect motor activity after proctocolectomy and ileal pouch-anal anastomosis? An experimental study in dogs
    S Willis
    Department of Surgery, Technical University Aachen, Aachen, Germany
    Eur Surg Res 36:165-71. 2004
    ..Botulinum type-A (BTA) toxin has been shown to specifically block acetylcholine release in the intestinal wall. Therefore this study investigated the effect of BTA on small intestinal and J-pouch motility after IPAA...
  4. ncbi request reprint [Open colon surgery]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Chirurg 76:1073-81. 2005
    ..Standardized indication and operational techniques enable low perioperative mortality and complication rates that make open colon resection usually un-problematic even in very old patients...
  5. ncbi request reprint Defecation mechanisms after proctocolectomy and ileal pouch--anal anastomosis in dogs
    S Willis
    Department of Surgery, Technical University Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Int J Colorectal Dis 19:228-33. 2004
    ..The role of intrinsic pouch motility after ileal pouch-anal anastomosis (IPAA) during defecation is still speculative...
  6. ncbi request reprint [Assisted death in daily surgical practice--an interdisciplinary discussion with examples]
    S Willis
    Chirurgische Universitatsklinik und Poliklinik, RWTH Aachen
    Chirurg 74:844-51. 2003
    ..The present study compiles viewpoints of physicians, ethicists, theologians, jurist, politicians, and journalists...
  7. ncbi request reprint [Functional results and quality of life after proctocolectomy and ileal J-pouch-anal anastomosis for ulcerative colitis]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Zentralbl Chir 128:663-8. 2003
    ..Ileal pouch-anal anastomosis is the surgical standard in the therapy of ulcerative colitis. It was the aim of the present study to evaluate functional long-term results and correlate them with quality of life...
  8. ncbi request reprint Defecation mechanisms after anterior resection with J-pouch-anal and side-to-end anastomosis in dogs
    S Willis
    Department of Surgery, RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Int J Colorectal Dis 22:161-5. 2007
    ..Colonic J-pouch-anal anastomosis or colonic side-to-end anastomosis is the reconstruction of choice after low anterior resection. However, the mechanisms of defecation after both reconstruction forms are still speculative...
  9. ncbi request reprint [Leakages after surgery of the lower gastrointestinal tract]
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen
    Chirurg 75:1071-8. 2004
    ..Therefore they are proposed in risk patients and intraoperatively difficult anastomoses...
  10. ncbi request reprint Childbirth and incontinence: a prospective study on anal sphincter morphology and function before and early after vaginal delivery
    S Willis
    Department of Surgery, Technical University Aachen, Pauwelsstrasse 30, Germany
    Langenbecks Arch Surg 387:101-7. 2002
    ..However, only few and incongruent data on the incidence and pathogenesis of postpartum incontinence are available. This study examined the effects of vaginal delivery on anal continence prospectively...
  11. ncbi request reprint Evaluation of anastomotic microcirculation after low anterior rectal resection: an experimental study with different reconstruction forms in dogs
    S Willis
    Department of Surgery, RWTH Aachen, Aachen, Germany
    Tech Coloproctol 10:222-6. 2006
    ....
  12. ncbi request reprint Comparison of colonic J-pouch reconstruction and straight coloanal anastomosis after intersphincteric rectal resection
    S Willis
    Chirurgische Universitätsklinik und Poliklinik der RWTH Aachen, Germany
    Langenbecks Arch Surg 386:193-9. 2001
    ..In view of the often poor prognosis of the patients, it is the reconstruction of choice after ultra-low resections of the rectum...
  13. ncbi request reprint Does loperamide affect motor activity after proctocolectomy and ileal pouch-anal anastomosis? An experimental study in dogs
    S Willis
    Department of Surgery, Technical University Aachen, Germany
    Int J Colorectal Dis 16:182-7. 2001
    ..Loperamide thus does not significantly affect intestinal motility after ileal pouch-anal anastomosis. The reduction in stool frequency seems to be due to antisecretory effects in the first line...
  14. ncbi request reprint Experimental studies on small intestinal pouch motility and evacuation
    S Willis
    Department of Surgery, Technical University Aachen, Germany
    Int J Surg Investig 1:211-8. 1999
    ..The aim of the study was to investigate pouch motility and evacuation under standardised conditions with a minimum of external influence...
  15. doi request reprint Anorectal, bladder, and sexual function in females following colorectal surgery for carcinoma
    G Bohm
    Department of General and Visceral Surgery, Universitatsklinikum Aachen, Aachen, Germany
    Int J Colorectal Dis 23:893-900. 2008
    ..The aim of this study was to establish the incidence of potential postoperative anorectal, bladder, and sexual dysfunction in women following excision of rectal cancer with total mesorectal excision (TME)...
  16. ncbi request reprint [Fair allocation of reduced resources in the German health care system. The patient's view]
    C J Krones
    Klinik und Poliklinik für Chirurgie, RWTH Aachen
    Chirurg 78:543-7. 2007
    ..Reform plans of the state, backers, and care providers seem to neglect patients' needs. To analyse this problem by scientific means, inpatients were interviewed as to their views concerning fair allocation...
  17. ncbi request reprint [Current patient perceptions of the physician]
    C J Krones
    Klinik und Poliklinik für Chirurgie, RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen
    Chirurg 77:718-24. 2006
    ..To analyse this problem by scientific means, inpatients were interviewed in standardised fashion on current expectations, ideals, and experience with that relationship...
  18. ncbi request reprint Effect of artificial valves on intestinal adaptation in the short-bowel syndrome: an integrated study of morphological and functional changes in rats
    S Willis
    Department of Surgery, Technical University Aachen, Germany
    Eur Surg Res 32:111-9. 2000
    ..Therefore, in our study, artificial valves did not result in functional improvements after small intestinal resections...
  19. ncbi request reprint [Surgical treatment of high anorectal and rectovaginal fistulas with the use of transanal endorectal advancement flaps]
    S Willis
    Chirurgische Universitatsklinik und Poliklinik, RWTH Aachen
    Chirurg 71:836-40. 2000
    ..Sphincterotomy can be avoided in the repair of high anorectal or rectovaginal fistulas by use of rectal advancement flaps...
  20. doi request reprint Haemorrhoids - a collagen disease?
    S Willis
    Department of Surgery, Klinikum Ludwigshafen, Germany
    Colorectal Dis 12:1249-53. 2010
    ..Therefore the aim of this study was to analyse the quantity and quality of collagen formation in the corpus cavernosum recti in patients with III°/IV° haemorrhoids in comparison with persons without haemorrhoids...
  21. ncbi request reprint Mesh migration into the esophageal wall after mesh hiatoplasty: comparison of two alloplastic materials
    M Jansen
    Department of Surgery, University Clinic RWTH Aachen, Pauwelsstrasse 30, 52057, Aachen, Germany
    Surg Endosc 21:2298-303. 2007
    ..Hiatal mesh implantation in the operative treatment of gastroesophageal reflux disease has become an increasing therapy option. Besides clinical results little is known about histological changes in the esophageal wall...
  22. ncbi request reprint [Orthopedic/visceral surgery cooperation in pelvic tumors]
    B Schmidt-Rohlfing
    , , RWTH Aachen
    Chirurg 72:1407-12. 2001
    ..In view of the rarity of these tumours, treatment should be performed only at specialized centers where co-operation is ensured...
  23. ncbi request reprint [Multidisciplinary treatment of rectal cancer]
    A Geier
    Medizinische Klinik III, Universitatsklinikum, Rheinisch Westfälische Technische Hochschule Aachen
    Dtsch Med Wochenschr 131:1945-50. 2006
  24. ncbi request reprint [Update on incisional hernia. Parastomal hernia]
    R Kasperk
    Chirurgische Klinik und Poliklinik Universitätsklinikum der RWTH Aachen, Germany
    Chirurg 73:895-8. 2002
    ..Only with the last technique of abdominal wall reinforcement it is possible to achieve a recurrence rate of under 20%. The best type of mesh and the optimal implantation technique are still under discussion...
  25. ncbi request reprint [Defecation problems following radical perineal prostatectomy. A prospective study]
    R Kirschner-Hermanns
    Urologische Klinik, Universitatsklinikum, RWTH, Aachen
    Urologe A 42:677-84. 2003
    ..The true incidence of bowel symptoms prior to radical prostatectomy, as evaluated by a differentiated questionnaire, is unknown. We therefore performed a prospective study on patients who were scheduled for radical perineal prostatectomy...
  26. ncbi request reprint [Fecal incontinence]
    J Braun
    Chirurgische Klinik, Rotes Kreuz Krankenhaus, St Pauli Deich 24, 28199 Bremen, Germany
    Chirurg 75:871-81. 2004
    ....
  27. ncbi request reprint Effective dose in paediatric computed tomography
    C L Chapple
    Regional Medical Physics Department, Newcastle General Hospital, Newcastle upon Tyne, UK
    Phys Med Biol 47:107-15. 2002
    ..Measurements carried out on a second scanner and for alternative scan volumes indicated that the method could be generally utilized...