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Impact of rectal washout on bacterial contamination caused by transrectal access for natural-orifice transluminal endoscopic surgery (NOTES)
ISRCTN ISRCTN70107172
ClinicalTrials.gov identifier
Public title Impact of rectal washout on bacterial contamination caused by transrectal access for natural-orifice transluminal endoscopic surgery (NOTES)
Scientific title Impact of rectal washout on bacterial contamination caused by transrectal access for natural-orifice transluminal endoscopic surgery (NOTES): a randomized controlled trial
Acronym NOBACT II
Serial number at source N/A
Study hypothesis The null-hypothesis states that the probability of bacterial contamination caused by transrectal access measured by a swab of the circular stapler’s center rod is the same for experimental intervention and control intervention. The alternative hypothesis states that the experimental interventions and the control intervention perform differently in terms of primary efficacy endpoint.
Lay summary Not provided at time of registration
Ethics approval Ethics Committee of the University of Heidelberg approved on 25/05/2011, (ref: S-396/2010)
Study design Prospective randomized controlled patient-blinded surgical trial with three parallel study groups
Countries of recruitment Germany
Disease/condition/study domain Patients undergoing sigmoid resection or left hemicolectomy
Participants - inclusion criteria 1. Given indication for sigmoid resection or left hemicolectomy with primary anastomosis in the proximal rectum
2. Age > 18 years
3. Written informed consent
Participants - exclusion criteria 1. American Society of Anesthesiology patient (ASA) classification IV and V
2. Emergency operation (obstruction, bleeding, peritonitis)
3. Hand-sutured anastomosis
4. Ileus, colitis, pelvic infection
5. Reoperation
6. Anastomosis < 6cm from the anus
7. Ongoing antibiotic therapy
8. Iodine allergy
9. Hyperthyreosis
Anticipated start date 01/12/2011
Anticipated end date 01/12/2012
Status of trial Ongoing
Patient information material Not available in web format, please use the contact details below to request a patient information sheet
Target number of participants 69
Interventions Experimental intervention:
1. Rectal washout with 5% povidon iodine using an applicator
2. Rectal washout with sodium chloride (NaCl) using an applicator

Control intervention:
Rectal washout with NaCl using an irrigation syringe
Primary outcome measure(s) Bacterial contamination at the circular stapler’s center rod following experimental intervention (rectal washout with 5% povidone iodine using an applicator) and control intervention
Secondary outcome measure(s) 1. Bacterial contamination at the circular stapler’s center rod following experimental intervention (rectal washout with NaCl using an applicator)
2. Bacterial count and routine cultures at rectal mucosa, center rod, small pelvis
3. Exploratory analyses
Sources of funding University of Heidelberg (Germany)
Trial website
Publications
Contact name Dr  Beat  Mueller
  Address Klinik für Allgemein-, Viszeral- und Transplantationschirurgie
Universität Heidelberg
Im Neuenheimer Feld 110
  City/town Heidelberg
  Zip/Postcode 69120
  Country Germany
  Tel +49 (0) 6221 56 8641
  Email beat.mueller@med.uni-heidelberg.de
Sponsor University of Heidelberg (Germany)
  Address Klinik für Allgemein-, Viszeral- und Transplantationschirurgie
Universität Heidelberg
Im Neuenheimer Feld 110
  City/town Heidelberg
  Zip/Postcode 69120
  Country Germany
  Email markus.buechler@med.uni-heidelberg.de
  Sponsor website: http://www.uni-heidelberg.de/index_e.html
Date applied 05/10/2011
Last edited 15/11/2011
Date ISRCTN assigned 15/11/2011
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