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CompletedNCT00657566Updated May 22, 2018

SIS Multicenter Study of Duration of Antibiotics for Intraabdominal Infection

A Phase 3 interventional study of duration of antibiotics and duration of antibiotics in Peritonitis, sponsored by University of Virginia. Completed at 23 sites in 2 countries. Open to participants aged 16 Years and older. Per ClinicalTrials.gov, last updated 2018-05-22.

Sponsored by University of Virginia · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
518
Allocation
Randomized
Ages
16 Years and older
Sex
All
01

Study summary

The major hypothesis to be tested is that the treatment of intraabdominal infections that have been adequately treated operatively or by percutaneous techniques with three to five days of antibiotics will result in outcomes equivalent to the current standard where treatment is carried out until the patient has returned to normal (normal white blood cell count, temperature, and intestinal function), and that patients treated for three to five days will receive fewer days of antibiotics than the control group that has traditionally received seven to 14 days of treatment.

Read the detailed description

Overall, this is a prospective, randomized, single-blinded (analysis), fifteen-center study using intent to treat analysis. Patients will be identified and after informed consent is obtained, will be randomized to receive antibiotics for 3 to 5 days (4 ± 1 days) after the initial surgical or percutaneous intervention or antibiotics until two calendar days after the patient's white blood cell count, systemic temperature, and gastrointestinal function have normalized (maximum of 10 days). The primary endpoint is the composite rate of in-hospital death and/or recurrence of intraabdominal infection and/or occurrence of surgical site (wound) infection. Secondary endpoints include the occurrence of any infection at any site and infection with antibiotic-resistant pathogens. Patient data through the thirty days following the initial intervention or until hospital discharge (whichever is longer) will be tracked

02

Conditions studied

  • Peritonitis

Keywords

  • intraabdominal
  • peritonitis
  • sepsis
  • duration
  • antibiotics
03

In context

Peritonitis

185 studies on the registry are indexed under Peritonitis; 25 are open to participants now.

This study's enrollment of 518 is above the median of 95 across 118 interventional studies indexed under Peritonitis.

Browse Peritonitis studies →

Lead sponsor

University of Virginia is the lead sponsor of 653 studies on the registry; 134 are open to participants now.

Of its 60 completed or terminated interventional studies of FDA-regulated products, 41 (68%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
16 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • age ≥ 16 at some sites,(≥ 18 at UVA)
  • ability to obtain informed consent from the subject or surrogate
  • Presence of an intraabdominal infection requiring any duration of hospitalization and managed with open, laparoscopic, or percutaneous intervention.
  • A peripheral white blood cell count of > 11,000/mm and/or temperature ≥ 38.0 C with in 24 hours or gastrointestinal dysfunction sufficient to prevent intake of normal diet within 24hrs of initial operative or percutaneous intervention.
  • Adequate source control in the opinion of the local investigator and PI. Source control is defined as any procedure that stops the ongoing contamination of the peritoneal cavity and removes the majority of the contaminated intraperitoneal contents to the extent that no further acute interventions are felt to be necessary.

Exclusion criteria

Exclusion Criteria:

  • age \< 16 years at some sites(\< 18 at UVA)
  • Inability to obtain consent from the patient, parents, or surrogate
  • Lack of adequate source control in the opinion of the local investigator or overall PI ( Robert Sawyer)
  • High likelihood of death within 72 hours of initial intervention in the opinion of the local investigator or principal investigator
  • Lack of any clinical improvement within 72 hours of initial intervention in the opinion of the local investigator or principal investigator.
  • Planned relaparotomy
  • Perforated gastric ulcer or duodenal ulcer treated within 24hours of the onset of symptoms
  • Traumatic injury to the bowel (including iatrogenic or intra-operative) treated within 12 hours of injury
  • Non-perforated, non-gangrenous appendicitis or cholecystitis
  • Gangrenous appendicitis or peritonitis without confirmatory cultures or with cultures without bacterial or fungal growth
  • Ischemic or necrotic intestine without perforation and without positive bacterial or fungal cultures
  • Intraabdominal infection associated with active necrotizing pancreatitis
  • Primary (spontaneous) bacterial peritonitis
  • Intraabdominal infection associated with an indwelling continuous ambulatory peritoneal dialysis catheter.
  • Primary skin closure of an open surgical incision in the presence of diffuse, non-localized peritonitis. Laparoscopic port sites ≥ 2cm may be closed
  • Pregnancy
  • Prior enrollment in this study
  • Enrollment in another therapeutic trial
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
518 participants (actual)

Study arms

  • Active comparator
    1

    antibiotics received for up to two days following normalization of white blood cell count, temperature, and gastrointestinal function

    Other: duration of antibiotics

  • Experimental
    2

    4 +/- 1 days of antibiotics

    Other: duration of antibiotics

Interventions

  • Otherduration of antibiotics

    4 +/- 1 days of antibiotics

    Also known as: short course

  • Otherduration of antibiotics

    active comparator antibiotics given until 2 days after resolution of fever, elevated white blood cell count, and gastrointestinal dysfunction.

    Also known as: long course

06

What researchers measure

Primary outcomes

  1. The primary endpoint will be percentage failure conditioned by assigned duration of antibiotic therapy (intent to treat analysis).

    Time frame: 30 days

Secondary outcomes

  1. Failure rate for clinically evaluable patients receiving the appropriate duration of antibiotics

    Time frame: 30 days

  2. failure rate for microbiologically evaluable patients

    Time frame: 30 days

  3. rate of need for reintervention in the abdomen

    Time frame: 30 days

  4. rate of surgical site infection

    Time frame: 30 days

  5. rate of death within 30 days

    Time frame: 30 days

  6. duration of hospitalization

    Time frame: 30 days

  7. rate of intraabdominal or surgical site failure due to antimicrobial-resistant pathogens

    Time frame: 30 days

  8. rate of any subsequent infection at a site other than the abdomen or the surgical site

    Time frame: 30 days

  9. rate of infection at a non-abdominal, non-surgical site with a resistant organism

    Time frame: 30 days

  10. rate of Clostridium difficile infection

    Time frame: 30 days

07

Study locations

23 sites
  • Maricopa Medical Center-Phoenix
    Phoenix, Arizona 85008, United States
  • University of California Davis
    Sacramento, California, United States
  • University of California San Diego
    San Diego, California, United States
  • University of California San Francisco
    San Francisco, California, United States
  • University of Miami
    Miami, Florida 33136, United States
  • Univestity of Kansas
    Kansas City, Kansas, United States
  • Louisville-VA
    Louisville, Kentucky 40121, United States
  • Louisville-University Hospital
    Louisville, Kentucky 40202, United States
  • Johns Hopkins
    Baltimore, Maryland 21205, United States
  • Brigham and Womens
    Boston, Massachusetts 02115, United States
  • Univeristy of Michigan
    Ann Arbor, Michigan 48502, United States
  • Washington Universtiy
    Saint Louis, Missouri 63110, United States
  • Wake Forest University
    Winston-Salem, North Carolina, United States
  • Case Western
    Cleveland, Ohio 44106, United States
  • Ohio State University
    Columbus, Ohio, United States
  • Pittsburgh VA
    Pittsburgh, Pennsylvania 15206, United States
  • University of South Carolina
    Columbia, South Carolina, United States
  • Universtiy of Texas San Antonio
    San Antonio, Texas 78229, United States
  • University of Virginia
    Charlottesville, Virginia 22903, United States
  • Medical College of Virginia-Virginia Commonwealth University Hospital
    Richmond, Virginia 23298, United States
  • University of Washington-Harborview
    Seattle, Washington 98104, United States
  • University of Washington - University Hospital
    Seattle, Washington 98195, United States
  • St Michael's
    Toronto, Ontario, Canada
08

References and documents

Publications

  • Hedrick TL, Evans HL, Smith RL, McElearney ST, Schulman AS, Chong TW, Pruett TL, Sawyer RG. Can we define the ideal duration of antibiotic therapy? Surg Infect (Larchmt). 2006 Oct;7(5):419-32. doi: 10.1089/sur.2006.7.419. PubMed 17083308 ↗
  • Sawyer RG, Claridge JA, Nathens AB, Rotstein OD, Duane TM, Evans HL, Cook CH, O'Neill PJ, Mazuski JE, Askari R, Wilson MA, Napolitano LM, Namias N, Miller PR, Dellinger EP, Watson CM, Coimbra R, Dent DL, Lowry SF, Cocanour CS, West MA, Banton KL, Cheadle WG, Lipsett PA, Guidry CA, Popovsky K; STOP-IT Trial Investigators. Trial of short-course antimicrobial therapy for intraabdominal infection. N Engl J Med. 2015 May 21;372(21):1996-2005. doi: 10.1056/NEJMoa1411162. Erratum In: N Engl J Med. 2018 Feb 15;378(7):686. doi: 10.1056/NEJMx180006. PubMed 25992746 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 22, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00657566
Lead sponsor
University of Virginia
Collaborators
National Institute of General Medical Sciences (NIGMS)
Responsible party
Robert Sawyer, MD (PI, National Institute of General Medical Sciences (NIGMS)) — Principal investigator
First posted
Apr 14, 2008
Start date
Sep 2008
Primary completion
Aug 2013
Completion
Aug 2014
Last update
May 22, 2018

Study contacts

Robert G Sawyer, MD
principal investigator · University of Virginia

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2018. You cannot join it, but the record below documents what was studied.

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