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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT02168816
Other study ID # 206209
Secondary ID
Status Terminated
Phase Phase 2
First received
Last updated
Start date March 19, 2014
Est. completion date February 2, 2017

Study information

Verified date June 2018
Source Loyola University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The Infectious Diseases Society of America (IDSA) 2012 guidelines for the diagnosis and treatment of diabetic foot infections state that for the treatment of diabetic foot osteomyelitis "No data support the superiority of any specific antibiotic agent or treatment strategy, route, or duration of therapy." Traditionally, osteomyelitis has been treated with a long course of intravenous antibiotics, generally six weeks. Oral antibiotics with high bioavailability and adequate bone penetration have been shown in published studies to be effective for the treatment of osteomyelitis.

The investigators propose to conduct a prospective, single-center, randomized, open trial at Loyola University Medical Center (LUMC) comparing the efficacy of oral antibiotic therapy to intravenous (IV) antibiotic therapy for the treatment of diabetic foot osteomyelitis. The investigators hypothesize that oral antibiotic therapy is equivalent to IV antibiotic therapy. Bone/tissue cultures are obtained for all patients for clinical purposes and are sent to pathology for histologic examination and to the clinical microbiology laboratory for culture and susceptibility. Patients will receive six weeks of IV or oral antibiotic therapy depending upon their randomization group. Primary outcomes at six months clinical follow-up will include: (i) no evidence of bone infection and (ii) resolution of ulcer.


Description:

Currently, available literature is not adequate to determine the best agent, route, or duration of antibiotic therapy for the treatment of chronic osteomyelitis. The standard of therapy has been to treat patients with a parenteral antibiotic for four to six weeks. In a recent literature review by Spellberg et al. it was concluded that oral and parenteral antibiotic therapy have similar cure rates for the treatment of chronic osteomyelitis. Oral antibiotic therapy is associated with a lower risk to the patient due to avoiding the need of a central IV line. Additionally, oral therapy costs less than a course of IV antibiotics. Oral antibiotics with high bioavailability and good bone penetration include, fluoroquinolones, linezolid, trimethoprim/sulfamethoxazole (2 tabs bid), clindamycin and metronidazole. These antibiotics have been shown in recent studies to obtain levels in the bone that exceed the minimum inhibitory concentration (MIC) levels of the targeted organisms. According to the IDSA 2012 guidelines for the treatment of diabetic foot infections, the diagnosis of osteomyelitis can be made via plain radiographs or MRI imaging (more sensitive). A bone scan can be considered if an MRI cannot be done. The preferred method of diagnosis is by bone culture and histology. The guidelines also recommend surgical debridement to healthy tissue for diabetic foot infections followed by antibiotic therapy.

The Purpose of this study is to compare the efficacy of oral antibiotic therapy with intravenous antibiotic therapy for the treatment of diabetic foot osteomyelitis following surgical debridement. They hypothesis is that oral antibiotic therapy is equivalent to intravenous antibiotic therapy for the treatment of diabetic foot osteomyelitis.


Recruitment information / eligibility

Status Terminated
Enrollment 30
Est. completion date February 2, 2017
Est. primary completion date February 2, 2017
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- 18 years of age and older

- Diagnosis of Diabetes Mellitus (per past medical history documented in the patient medical record)

- Foot osteomyelitis (distal to ankle)

- Surgical debridement (in operating room)

Exclusion Criteria:

- Absolute neutrophil count (ANC) < 500

- Pregnant or lactating patients

- Patients with organisms resistant to oral therapy

- Internal hardware

- Definitive amputations (BKA)

- Limb ischemia [absent pedal pulses or ankle-brachial index (ABI) < 0.5]

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Intravenous Antibacterial Agent
Individuals in this arm receive an intravenous antibacterial agent. They are not assigned to specific medications. Individuals in this arm will receive an intravenous antibacterial agent as determined by their primary healthcare provider. This therapy is usually one of the following intravenous medications: (i) piperacillin/tazobactam (Zosyn), (ii) cefepime, (iii) metronidazole, (iv) aztreonam, (v) vancomycin, (vi) daptomycin, (vii) linezolid (Zyvox), and/or (viii) meropenem.
Oral Antibacterial Agent
Individuals in this arm receive an oral antibacterial agent. They are not assigned to specific medications. Individuals in this arm will receive an oral antibacterial agent as determined by their primary healthcare provider. This therapy is usually one of the following oral medications: (i) sulfamethoxazole/trimethoprim (SMX-TMP), (ii) clindamycin (Clindesse), (iii) linezolid (Zyvox), (iv) moxifloxacin (Avelox), (v) ciprofloxacin (Cetraxal), and/or (vi) metronidazole (Flagyl)

Locations

Country Name City State
United States Loyola University Medical Center Maywood Illinois

Sponsors (1)

Lead Sponsor Collaborator
Loyola University

Country where clinical trial is conducted

United States, 

References & Publications (6)

Bouazza N, Pestre V, Jullien V, Curis E, Urien S, Salmon D, Tréluyer JM. Population pharmacokinetics of clindamycin orally and intravenously administered in patients with osteomyelitis. Br J Clin Pharmacol. 2012 Dec;74(6):971-7. doi: 10.1111/j.1365-2125.2012.04292.x. — View Citation

Lazzarini L, Lipsky BA, Mader JT. Antibiotic treatment of osteomyelitis: what have we learned from 30 years of clinical trials? Int J Infect Dis. 2005 May;9(3):127-38. Review. — View Citation

Lipsky BA, Berendt AR, Cornia PB, Pile JC, Peters EJ, Armstrong DG, Deery HG, Embil JM, Joseph WS, Karchmer AW, Pinzur MS, Senneville E; Infectious Diseases Society of America. 2012 Infectious Diseases Society of America clinical practice guideline for the diagnosis and treatment of diabetic foot infections. Clin Infect Dis. 2012 Jun;54(12):e132-73. doi: 10.1093/cid/cis346. — View Citation

Pinzur MS, Gil J, Belmares J. Treatment of osteomyelitis in charcot foot with single-stage resection of infection, correction of deformity, and maintenance with ring fixation. Foot Ankle Int. 2012 Dec;33(12):1069-74. doi: DOI: 10.3113/FAI.2012.1069. — View Citation

Spellberg B, Lipsky BA. Systemic antibiotic therapy for chronic osteomyelitis in adults. Clin Infect Dis. 2012 Feb 1;54(3):393-407. doi: 10.1093/cid/cir842. Epub 2011 Dec 12. Review. — View Citation

Wukich DK, Armstrong DG, Attinger CE, Boulton AJ, Burns PR, Frykberg RG, Hellman R, Kim PJ, Lipsky BA, Pile JC, Pinzur MS, Siminerio L. Inpatient management of diabetic foot disorders: a clinical guide. Diabetes Care. 2013 Sep;36(9):2862-71. doi: 10.2337/dc12-2712. Review. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Number of Participants With Bone Infection Six months following completion of treatment, the researchers record evidence of bone infection for each participant. A negative diagnosis is made when there is (i) an absence of infection based on clinical examination and (ii) down-trending of inflammatory markers. Otherwise, a positive diagnosis is made. Six Months
Secondary Number of Participants With Ulcer Resolution Six months following completion of treatment, the researchers record whether each participant's ulcer has resolved. Six Months
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