Evaluation of a 'Hand-Held' Fluorescence Digital Imaging Device for Real-Time Advanced Wound Care Monitoring (SMH/UHN)
Currently, standard wound care practice is suboptimal at assessing wound remodeling and bacterial infection in real-time. An alternative and complimentary means of providing real-time imaging of connective tissue re-modeling and bacterial infection may greatly increase the early detection of infection thus leading to rapid therapeutic intervention. Our new device, PRODIGI(TM), images tissue and bacterial autofluorescence (without agents) and may provide this clinically-important capability.
In preliminary preclinical testing, the investigators have discovered that when wounds are illuminated by violet/blue light, endogenous collagen in the connective tissue matrix emit a characteristic green fluorescent signal, while most pathogenic bacterial species emit a unique red fluorescence signal due to the production of endogenous porphyrins. Therefore, with autofluorescence imaging, no exogenous contrast agents are needed during imaging, making this approach particularly appealing as a diagnostic imaging method for clinical use.
The investigators hypothesize that real-time imaging of tissue autofluorescence signals emanating from endogenous connective tissue (e.g. collagen) and pathogenic bacteria within complex wounds can be used to determine healing status (i.e., collagen re-modeling and wound closure), detect wound bacterial contamination and/or infection that is occult under standard clinical white light evaluation, and guide intervention and wound care.
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Evaluation of a 'Hand-Held' Fluorescence Digital Imaging Device for Real-Time Advanced Wound Care Monitoring (SMH/UHN)|
- providing wound healing status in real time based on collagen fluorescence as an indicator of wound closure [ Time Frame: Upon study completion ] [ Designated as safety issue: No ]
- detecting bacterial contamination and infection in wounds that is occult to conventional wound assessment methods (white light visualization and clinical signs and symptoms of wound infection) [ Time Frame: Upon study completion ] [ Designated as safety issue: No ]
- the ability of the device to provide real-time fluorescence image-guided targeting of swabbing for bacteriology testing [ Time Frame: Upon study completion ] [ Designated as safety issue: No ]
- utility of PRODIGI™ in guiding intervention [ Time Frame: Upon study completion ] [ Designated as safety issue: No ]
|Study Start Date:||July 2012|
|Estimated Study Completion Date:||July 2014|
|Estimated Primary Completion Date:||June 2014 (Final data collection date for primary outcome measure)|
|St. Michael's Hospital|
|Toronto, Ontario, Canada, M5B 1W8|
|Principal Investigator:||Ralph S DaCosta, PhD||University Health Network, Toronto|