Study: NCT02466698

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Intestinal Lavage
Description: A nasojejunal tube and fecal management system will be inserted. Intestinal lavage with PEG is initiated and increased to a goal rate of 400cc/hour to a total of 8L of PEG. In the absence of an ileus, lavage should be initiated at 200cc/hr. Tolerance is confirmed if the rectal effluent volume is ≥50% of the lavage volume over the first 6 hours and no emesis has developed. If the consulting surgical service suspects a significant ileus, the lavage is initiated at 100cc/hr. If tolerance is confirmed the lavage rate is increased in a stepwise fashion. Antibiotic regimen will consist of Vancomycin 500mg via nasojejunal every 6 hours and Metronidazole 500 mg IV three times daily for 14 days. PEG will be held for 2 hours after administration of Vancomycin.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: Vancomycin
Description: Patients will receive standard antibiotic treatment for severe CDI. This includes an antibiotic regimen of Vancomycin 500mg orally every 6 hours and Metronidazole 500mg IV three times daily for 14 days. The standard medical care group (active comparator group) will receive the same antibiotic doses as the experimental arm of the study For both arms, indications to escalate treatment to surgical intervention will ultimately be based on the clinical assessment by the surgical service. An absolute indication for surgery is perforation. Other indications such as toxic megacolon, worsening peritonitis or biochemical profile lavage are relative indications that vary according to clinician and individual patient characteristics.

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Vancomycin
Description: Patients will receive standard antibiotic treatment for severe CDI. This includes an antibiotic regimen of Vancomycin 500mg orally every 6 hours and Metronidazole 500mg IV three times daily for 14 days. The standard medical care group (active comparator group) will receive the same antibiotic doses as the experimental arm of the study For both arms, indications to escalate treatment to surgical intervention will ultimately be based on the clinical assessment by the surgical service. An absolute indication for surgery is perforation. Other indications such as toxic megacolon, worsening peritonitis or biochemical profile lavage are relative indications that vary according to clinician and individual patient characteristics.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: PEG
Description: Polyethylene glycol 3350, 8L in 48 hours, via a nasojejunal tube will be used to facilitate intestinal lavage.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: Metronidazole
Description: Patients will receive standard antibiotic treatment for severe CDI. This includes an antibiotic regimen of Vancomycin 500mg orally every 6 hours and Metronidazole 500mg IV three times daily for 14 days. The standard medical care group (active comparator group) will receive the same antibiotic doses as the experimental arm of the study For both arms, indications to escalate treatment to surgical intervention will ultimately be based on the clinical assessment by the surgical service. An absolute indication for surgery is perforation. Other indications such as toxic megacolon, worsening peritonitis or biochemical profile lavage are relative indications that vary according to clinician and individual patient characteristics.

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Metronidazole
Description: Patients will receive standard antibiotic treatment for severe CDI. This includes an antibiotic regimen of Vancomycin 500mg orally every 6 hours and Metronidazole 500mg IV three times daily for 14 days. The standard medical care group (active comparator group) will receive the same antibiotic doses as the experimental arm of the study For both arms, indications to escalate treatment to surgical intervention will ultimately be based on the clinical assessment by the surgical service. An absolute indication for surgery is perforation. Other indications such as toxic megacolon, worsening peritonitis or biochemical profile lavage are relative indications that vary according to clinician and individual patient characteristics.