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Colour Duplex imaging through wound dressings

M S Whiteley1, T R Magee, R Harris

  • 1Department of Surgery, Royal United Hospital, Bath, Avon, U.K.

European Journal of Vascular Surgery
|November 1, 1993
PubMed
Summary

Certain wound dressings can interfere with ultrasound imaging. Thin membrane dressings like Opsite and Tegaderm allow clear colour flow Duplex scanning of arteries, while others block signals.

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Area of Science:

  • Vascular Ultrasound
  • Medical Device Materials

Background:

  • Colour flow Duplex scanning is crucial for assessing infrainguinal grafts and native arteries.
  • Surgical wounds and ulcers often necessitate wound dressings that may impede ultrasound signal transmission.
  • Limited data exists on the impact of various wound dressings on colour flow Duplex ultrasound signals.

Purpose of the Study:

  • To evaluate the effect of commonly used wound dressings on the quality of colour flow Duplex ultrasound signals.
  • To identify wound dressing materials that permit adequate ultrasound transmission for vascular assessment.

Main Methods:

  • Ten normal superficial femoral arteries were scanned using colour flow Duplex ultrasound by a blinded operator.
  • Initial scans established baseline B-mode, colour flow, and Doppler signals.
  • Five different wound dressings were applied sequentially over the arteries in a random order, and signal quality was graded.

Main Results:

  • Primapore and Spyroflex dressings completely blocked ultrasound transmission.
  • Granuflex extra thin allowed B-mode imaging and Doppler waveforms but suboptimal colour flow.
  • Opsite and Tegaderm, thin membrane dressings, provided excellent B-mode and colour flow images with clear Doppler signals.

Conclusions:

  • The choice of wound dressing significantly impacts the feasibility of colour flow Duplex scanning.
  • Thin membrane dressings (Opsite, Tegaderm) are recommended for patients requiring both wound management and vascular ultrasound assessment.
  • Using ultrasound-transmissive dressings can eliminate the need for removal during vascular assessments, improving patient convenience and procedural efficiency.

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