@article{WagnerEikenHaubitzetal.2019,
  author    = {Wagner, Johanna and Eiken, Barbara and Haubitz, Imme and Lichthardt, Sven and Matthes, Niels and L{\"o}b, Stefan and Klein, Ingo and Germer, Christoph-Thomas and Wiegering, Armin},
  title     = {Suprapubic bladder drainage and epidural catheters following abdominal surgery—a risk for urinary tract infections?},
  series = {PLoS ONE},
  volume    = {14},
  journal   = {PLoS ONE},
  number    = {1},
  doi       = {10.1371/journal.pone.0209825},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-177731},
  pages     = {e0209825},
  year      = {2019},
  abstract  = {Background Epidural catheters are state of the art for postoperative analgesic in abdominal surgery. Due to neurolysis it can lead to postoperative urinary tract retention (POUR), which leads to prolonged bladder catheterization, which has an increased risk for urinary tract infections (UTI). Our aim was to identify the current perioperative management of urinary catheters and, second, to identify the optimal time of suprapubic bladder catheter removal in regard to the removal of the epidural catheter. Methods We sent a questionnaire to 102 German hospitals and analyzed the 83 received answers to evaluate the current handling of bladder drainage and epidural catheters. Then, we conducted a retrospective study including 501 patients, who received an epidural and suprapubic catheter after abdominal surgery at the University Hospital W{\"u}rzburg. We divided the patients into three groups according to the point in time of suprapubic bladder drainage removal in regard to the removal of the epidural catheter and analyzed the onset of a UTI. Results Our survey showed that in almost all hospitals (98.8\%), patients received an epidural catheter and a bladder drainage after abdominal surgery. The point in time of urinary catheter removal was equally distributed between before, simultaneously and after the removal of the epidural catheter (respectively: ~28-29\%). The retrospective study showed a catheter-associated UTI in 6.7\%. Women were affected significantly more often than men (10,7\% versus 2,5\%, p<0.001). There was a non-significant trend to more UTIs when the suprapubic catheter was removed after the epidural catheter (before: 5.7\%, after: 8.4\%). Conclusion The point in time of suprapubic bladder drainage removal in relation to the removal of the epidural catheter does not seem to correlate with the rate of UTIs. The current handling in Germany is inhomogeneous, so further studies to standardize treatment are recommended.},
  language  = {en}
}
@article{LichthardtWagnerLoebetal.2020,
  author    = {Lichthardt, Sven and Wagner, Johanna and L{\"o}b, Stefan and Matthes, Niels and Kastner, Caroline and Anger, Friedrich and Germer, Christoph-Thomas and Wiegering, Armin},
  title     = {Pathological complete response due to a prolonged time interval between preoperative chemoradiation and surgery in locally advanced rectal cancer: analysis from the German StuDoQ|Rectalcarcinoma registry},
  series = {BMC Cancer},
  volume    = {20},
  journal   = {BMC Cancer},
  number    = {1},
  doi       = {10.1186/s12885-020-6538-8},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-229334},
  year      = {2020},
  abstract  = {Background Preoperative chemoradiotherapy is the recommended standard of care for patients with local advanced rectal cancer. However, it remains unclear, whether a prolonged time interval to surgery results in an increased perioperative morbidity, reduced TME quality or better pathological response. Aim of this study was to determine the time interval for best pathological response and perioperative outcome compared to current recommended interval of 6 to 8 weeks. Methods This is a retrospective analysis of the German StuDoQ|Rectalcarcinoma registry. Patients were grouped for the time intervals of "less than 6 weeks", "6 to 8 weeks", "8 to 10 weeks" and "more than 10 weeks". Primary endpoint was pathological response, secondary endpoint TME quality and complications according to Clavien-Dindo classification. Results Due to our inclusion criteria (preoperative chemoradiation, surgery in curative intention, M0), 1.809 of 9.560 patients were suitable for analysis. We observed a trend for increased rates of pathological complete response (pCR: ypT0ypN0) and pathological good response (pGR: ypT0-1ypN0) for groups with a prolonged time interval which was not significant. Ultimately, it led to a steady state of pCR (16.5\%) and pGR (22.6\%) in "8 to 10" and "more than 10" weeks. We were not able to observe any differences between the subgroups in perioperative morbidity, proportion of rectal extirpation (for cancer of the lower third) or difference in TME quality. Conclusion A prolonged time interval between neoadjuvant chemoradiation can be performed, as the rate of pCR seems to be increased without influencing perioperative morbidity.},
  language  = {en}
}
@article{PelzWagnerLichthardtetal.2018,
  author    = {Pelz, J{\"o}rg O. W. and Wagner, Johanna and Lichthardt, Sven and Baur, Johannes and Kastner, Caroline and Matthes, Niels and Germer, Christoph-Thomas and Wiegering, Armin},
  title     = {Laparoscopic right-sided colon resection for colon cancer - has the control group so far been chosen correctly?},
  series = {World Journal of Surgical Oncology},
  volume    = {16},
  journal   = {World Journal of Surgical Oncology},
  number    = {117},
  doi       = {10.1186/s12957-018-1417-3},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-176186},
  year      = {2018},
  abstract  = {Background: The treatment strategies for colorectal cancer located in the right side of the colon have changed dramatically during the last decade. Due to the introduction of complete mesocolic excision (CME) with central ligation of the vessels and systematic lymph node dissection, the long-term survival of affected patients has increased significantly. It has also been proposed that right-sided colon resection can be performed laparoscopically with the same extent of resection and equal long-term results. Methods: A retrospective evaluation of a prospectively expanded database on right-sided colorectal cancer or adenoma treated at the University Hospital of Wuerzburg between 2009 and 2016 was performed. All patients underwent CME. This data was analyzed alone and in comparison to the published data describing laparoscopic right-sided colon resection for colon cancer. Results: The database contains 279 patients, who underwent right-sided colon resection due to colorectal cancer or colorectal adenoma (255 open; 24 laparoscopic). Operation data (time, length of stay, time on ICU) was equal or superior to laparoscopy, which is comparable to the published results. Surprisingly, the surrogate parameter for correct CME (the number of removed lymph nodes) was significantly higher in the open group. In a subgroup analysis only including patients who were feasible for laparoscopic resection and had been operated with an open procedure by an experienced surgeon, operation time was significantly shorter and the number of removed lymph nodes is significantly higher in the open group. Conclusion: So far, several studies demonstrate that laparoscopic right-sided colon resection is comparable to open resection. Our data suggests that a consequent CME during an open operation leads to significantly more removed lymph nodes than in laparoscopically resected patients and in several so far published data of open control groups from Europe. Further prospective randomized trials comparing the long-term outcome are urgently needed before laparoscopy for right-sided colon resection can be recommended ubiquitously.},
  language  = {en}
}