Study Results
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Basic Information
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UNKNOWN
NA
1844 participants
INTERVENTIONAL
2011-06-30
2013-06-30
Brief Summary
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Detailed Description
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1. No local antibiotics (control group): In this group, individuals will be subjected to peri-operative intravenous\* antibiotics only
2. Gram positive antibiotic: In this group, gram positive (powdered vancomycin)+ will be applied to the site of surgery, before closure of the wound, along with peri-operative intravenous antibiotics\*
3. Gram positive and gram negative: In this group, gram positive (powdered vancomycin) will be instilled on the site of surgery, before closing the wound, and gram negative antibiotic (gentamycin mixed with bone cement)+ will be used, along with peri-operative intravenous antibiotics\* (only in cases of implant fixation).
* Intravenous antibiotic dosage: 1 pre-operative dose of Cefuroxime 1.5 gm and 2 post-operative doses of Cefuroxime 750 mg.
* Vancomycin and Gentamycin dosage: 500 mg of vancomycin powder will be used and in group 'c' gentamycin mixed with bone cement will be used along with vancomycin powder.
2. Sample size: Based on, finding at least 4% difference between the proportions of infections found in control (generally 5%, 4% in case of joint replacement) and case groups (1%) (proportions were assumed from literature and our institute records), a sample size of minimum 285 in each group (424 for joint replacement cases) will be considered for the observation to be significant at an alpha level of 0.05. This will give the study a minimum power of 80%.
Spine cases: Control = 143, Gram-P = 143; Trauma cases: Control = 143, Gram-P = 143; Joint replacement cases: Control = 424, Gram-P = 424, Gram-P+Gram-N = 424; Total = 1844; Where Control - Cases with intravenous antibiotic dose; Gram-P - Cases with intravenous antibiotic + local antibiotic (Vancomycin, acts against gram positive bacteria); Gram-N - Cases with intravenous antibiotic + local antibiotic (Vancomycin, acts against gram positive bacteria) + local Gentamycin cement (acts against gram negative bacteria).
3. Procedure: Sampling will be based on stratified procedure. The total sample will be divided into categories based on the type of surgery, which are spine, trauma and joint replacement. Subjects within each category will be randomly selected for the three antibiotic treatments. For this study, we will use computer software to generate restricted randomization to achieve balance between groups in size. Within this restricted randomization, single block random size will be used to ensure randomization within each group.
While joint surgery category will have all the three groups of cases (a, b and c), spine and trauma surgery category will have only two groups (a and b). Surgeries will be performed accordingly i.e. control group individuals will undergo mandated hospital policy requirements + perioperative intravenous antibiotic treatment and cases will undergo mandated hospital policy requirements + powdered vancomycin, or both vancomycin, just before the closure of the wound, and gentamycin as a mix with bone cement. Patients who exhibit both superficial and deep wood infection will be considered as infected and accounted for statistical analysis.
4. Analysis: Our main parameter of comparison is infection percentage among control and cases. Various factors like duration of surgery, tourniquet time, prior infections, blood transfusion, haemoglobin count, comorbidities, etc, will be considered while analysing for infection percentage. Infection proportions will be compared between different groups at a significance level of 0.05.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
SINGLE
Study Groups
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Vancomycin
Vancomycin
1 pre-operative dose of intravenous Cefuroxime (1.5 gm) and 2 post-operative doses of Cefuroxime (750 mg) + 500 mg of vancomycin instilled on surgical site before closure
Vancomycin and Gentamycin
Vancomycin and Gentamycin
1 pre-operative dose of intravenous Cefuroxime (1.5 gm) and 2 post-operative doses of Cefuroxime (750 mg) and 500 mg of vancomycin powder on surgical site before closure with gentamycin bone cement for joint replacement cases.
Intravenous Antibiotic
Cefuroxime
1 pre-operative dose of Cefuroxime (1.5 gm) and 2 post-operative doses of Cefuroxime (750 mg)
Interventions
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Vancomycin
1 pre-operative dose of intravenous Cefuroxime (1.5 gm) and 2 post-operative doses of Cefuroxime (750 mg) + 500 mg of vancomycin instilled on surgical site before closure
Vancomycin and Gentamycin
1 pre-operative dose of intravenous Cefuroxime (1.5 gm) and 2 post-operative doses of Cefuroxime (750 mg) and 500 mg of vancomycin powder on surgical site before closure with gentamycin bone cement for joint replacement cases.
Cefuroxime
1 pre-operative dose of Cefuroxime (1.5 gm) and 2 post-operative doses of Cefuroxime (750 mg)
Eligibility Criteria
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Inclusion Criteria
* All non infected spine patients
* Hemiarthroplasty, All upper limb plating of closed fractures
Exclusion Criteria
* Revision joint replacement surgeries
* Patients with suspicion of existing infection
10 Years
ALL
No
Sponsors
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Ganga Hospital
OTHER
Responsible Party
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Ganga Hospital
Principal Investigators
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Rajasekaran Shanmuganathan, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
Ganga Hospital
Locations
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Ganga Hospital, Orthopaedics Department
Coimbatore, Tamil Nadu, India
Countries
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Facility Contacts
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Other Identifiers
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U1111-1119-9648
Identifier Type: -
Identifier Source: org_study_id
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