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Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
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Published on: September 6, 2024

Volatile emissions from compressed tissue.

Francesca Dini1, Rosamaria Capuano, Tillan Strand

  • 1Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy. dini@ing.uniroma2.it

Plos One
|July 23, 2013
PubMed
Summary
This summary is machine-generated.

Early detection of pressure ulcers is crucial. This study explored volatile organic compounds (VOCs) from compressed skin using an electronic nose, finding differences between healthy and hospitalized individuals, and compressed vs. uncompressed sites.

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Published on: January 29, 2011

Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Dermatology

Background:

  • Pressure ulcers affect nearly 20% of hospitalized patients, necessitating early risk identification.
  • Non-invasive methods using endogenous biomarkers could aid in early pressure ulcer detection.
  • Understanding volatile emissions from compressed tissue is key to developing predictive diagnostics.

Purpose of the Study:

  • To investigate differences in volatile emissions from compressed versus uncompressed human tissue.
  • To explore the potential of non-invasive methods for early pressure ulcer risk assessment.
  • To identify potential volatile biomarkers indicative of pressure-induced tissue changes.

Main Methods:

  • Collection of volatile emissions from compressed and uncompressed skin sites.
  • Analysis of collected volatiles using gas-chromatography-mass spectrometry (GC-MS).
  • Utilized a chemical sensor array, an electronic nose, for emission analysis.

Main Results:

  • Significant differences in volatile emissions were observed between healthy and hospitalized individuals.
  • Distinct differences in emissions were found between compressed and uncompressed tissue sites within each group.
  • While specific compression markers were not identified, compounds related to mechanical pressure were detected.
  • GC-MS revealed complex volatile organic compound (VOC) composition, suggesting suitability of non-selective sensors.

Conclusions:

  • Electronic nose arrays show promise for analyzing skin emissions from compressed tissues for bedside diagnostics.
  • Current electronic noses appear sensitive to total emission volume rather than specific VOC composition.
  • Further research requires long-term patient monitoring to identify VOC patterns signaling ulcer development.