Remote Wound Monitoring of Chronic Ulcers

Sonja A. Weber, Niall Watermann, Jacques Jossinet, J. Anthony Byrne, Jonquille Chantrey, Shabana Alam,

Karen So, Jim Bush, Sharon O’Kane, and Eric T. McAdamsIEEE TRANSACTIONS ON INFORMATION TECHNOLOGY IN

BIOMEDICINE, VOL. 14, NO. 2, MARCH 2010Presenter:陳麒文

OutlineOutline

Intro Current wound assessment Development of a new impedance-based

wound-mapping system Clinical assessment of the technique Conclusion

IntroductionIntroduction

Cost Cost equivalent to 4% of the total National Health Service

Some measurement is required to communicated inform on necessary dressing changes

improve the quality of care and give vital support and confidence to the patients and their families

Current wound assessment-1Current wound assessment-1

tracing the wound on transparency film with a fine-tipped pen, and analyzing the traced area manually by “counting squares,” or digitally by means of a planimeter or digitizer

taking a scaled photograph of the wound

Current wound assessment-2Current wound assessment-2

Unfortunately, given the general awkwardness of the position of chronic wounds, it is generally not possible for the patient to perform the measurement him/herself

dressing removal in itself can interfere with healing

Current wound assessment-3Current wound assessment-3

noncontact photographic technique (planimetry) eliminates the increased risk of contamination or wound interference associated with direct-contact methods

change in camera angle can change the calculated area by around 10% due to the curved nature of most of the body’s surfaces [M. Flanagan, “Wound measurement: Can it help us to monitor progression

in healing?,” J. Wound Care, vol. 12, pp. 189–194, 2003]

Hardware overview of the wound-mapping system

(Left) Prototype ImpediMap device. (Right) Early electrode array.

Q&AQ&A