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About
This study seeks to test if the study drug (voriconazole), when applied topically to a burn wound on the skin will help to reduce pain.
Full description
This single-center, prospective, randomized, double-blind, controlled pilot study conducted at San Antonio Military Medical Center will evaluate the effectiveness of topical voriconazole for pain relief at autogenous skin donor sites compared to a topical placebo application. The patients will act as their own control. All participants and investigators in the study will be blinded to the treatment arm utilized on each of the patient's donor sites (voriconazole versus placebo). Patients, who are scheduled for skin grafting and have met the inclusion criteria for this study, will be invited to enroll in the study. Only those patients who have been planned for skin graft sites that are approximately symmetrical in size will be allowed to enroll in the study. The donor site wounds will be studied using a paired design consisting of voriconazole or the placebo applied topically to same-patient matched donor sites. Patients will be queried via the pain assessment tool as to perceived pain at timed intervals. Dialysate samples will be collected via microdialysis probes at matching timed intervals in order to measure levels of oxidized linoleic acid metabolites shown in previous studies to be present in peripheral nerves.
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Inclusion criteria
1.1 Subject must be at least 18 years of age and no older than 60 years of age of either gender and in good general health.
1.2 Subject has sustained burn wounds of less than 30 percent of the total body surface area, in order to minimize the systemic effects on wound healing and the risk of infection (both of which increase with increasing burn size).
1.3 Subject has sustained Burn or trauma/orthopedic wounds do not involve the harvesting area.
1.4 Subject has sustained burn or trauma/orthopedic wounds that, in the judgment of the attending surgeon, require excision and grafting of sufficient extent to justify two donor sites of equal and symmetrical size on non-dependent body surfaces areas. Note: Only two donor sites will be studied, however if the subject requires more than two donor sites, they will not be excluded.
1.5 The scheduled excision and grafting procedure is the first such operation for the subject during this hospitalization and injury.
1.6 Subject agrees to participate in follow-up evaluations (Post Op Day 0-3 and one follow up appointment between Post Op day 30-45 for Donor site evaluation and photos of both donor sites.
Exclusion criteria
2.1 Critical illnesses such as those requiring ventilator support, or having a systemic infection or hemodynamic instability, defined as a mean arterial pressure less than 60 for an extended period of time or requiring vasoactive medications to support blood pressure.
2.2 Patients unable to accurately communicate pain secondary to medical illness, altered mental status, spinal cord injury, and known current narcotic drug use.
2.3 Patients unable to make his/her own decision for the informed consent. (Not seeking consent from the legal authorized representative; self consent only).
2.4 Major acute or chronic medical illnesses that could affect wound healing (e.g. peripheral vascular disease, blood clotting disorder).
2.6 Cellulitis or other infection of the potential donor sites.
2.7 Donor site has been previously harvested for grafting.
2.8 Donor site crosses a joint.
2.9 Any Corticosteroid use that could interfere with wound healing thus OLAM levels.
2.10 Subjects with greater than 30% total body surface area burns.
2.11 Pregnancy or lactation. (Beta HCG pregnancy test completed prior to operative procedure, not part of study) In the event that we have a record of a hysterectomy, no pregnancy test will be done, and the subject will be assumed NOT to be pregnant.
2.12 Prisoners.
2.13 Subjects having any contraindications for voriconazole. The contraindications are 1) known hypersensitivity to voriconazole; and 2) Coadministration of terfenadine, astemizole, cisapride, pimozide, quinidine or sirolimus, rifampin, carbamazepine, long acting barbiturates, high dose ritonavir, rifabutin, ergotamine, dihydroergotamine, oral contraceptives or St. John's Wort. A one week washout shall be determined for the above listed medications prior to allowing entry into the study.
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0 participants in 2 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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