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Evaluation of a 'Hand-Held' Fluorescence Digital Imaging Device for Real-Time Advanced Wound Care Monitoring (SMH/UHN) (SMH/UHN)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01650571
Recruitment Status : Completed
First Posted : July 26, 2012
Last Update Posted : August 28, 2017
Cancer Care Ontario
Information provided by (Responsible Party):
University Health Network, Toronto

Brief Summary:

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.

Condition or disease
Surgical Wounds

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Study Type : Observational
Actual Enrollment : 7 participants
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)
Actual Study Start Date : October 2012
Actual Primary Completion Date : October 2016
Actual Study Completion Date : October 2016

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. providing wound healing status in real time based on collagen fluorescence as an indicator of wound closure [ Time Frame: Upon study completion ]

Secondary Outcome Measures :
  1. 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 ]
  2. the ability of the device to provide real-time fluorescence image-guided targeting of swabbing for bacteriology testing [ Time Frame: Upon study completion ]
  3. utility of PRODIGI™ in guiding intervention [ Time Frame: Upon study completion ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
20 patients with wounds resulting from general abdominal surgery will be entered into this trial, based on statistical power-based calculations for sample size determined in collaboration with the UHN Biostatistics Group (assuming one wound per patient).

Inclusion Criteria:

  1. > 18 years of age
  2. males and females
  3. receiving care as in-patient at St. Michael's Hospital
  4. presenting with abdominal wounds resulting from general surgery with known or unknown infection status.

Exclusion Criteria:

  1. treatment with an investigational drug within 1 month before study enrolment
  2. any contra-indication to routine wound care and/or monitoring
  3. inability to consent

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01650571

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Canada, Ontario
St. Michael's Hospital
Toronto, Ontario, Canada, M5B 1W8
Sponsors and Collaborators
University Health Network, Toronto
Cancer Care Ontario
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Principal Investigator: Ralph S DaCosta, PhD University Health Network, Toronto
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Responsible Party: University Health Network, Toronto Identifier: NCT01650571    
Other Study ID Numbers: 12-5024-A
First Posted: July 26, 2012    Key Record Dates
Last Update Posted: August 28, 2017
Last Verified: August 2017
Additional relevant MeSH terms:
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Wounds and Injuries
Surgical Wound