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Related Concept Videos

Pulse Oximetry01:24

Pulse Oximetry

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Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
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Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
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Special considerations while measuring oxygen saturation01:19

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Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
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Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
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Feasibility to Measure Tissue Oxygen Saturation Using Textile-Integrated Polymer Optical Fibers.

Tarcisi Cantieni1, O da Silva-Kress2, M González3

  • 1Institute of Complementary and Integrative Medicine, University of Bern, Bern, Switzerland. tarcisi.cantieni@unibe.ch.

Advances in Experimental Medicine and Biology
|December 17, 2022
PubMed
Summary
This summary is machine-generated.

This study demonstrates the feasibility of using textile-integrated near-infrared spectroscopy (NIRS) to monitor tissue oxygen saturation (StO2) for preventing pressure injuries (PI). Wearable NIRS textiles effectively detect hypoxia, a key factor in PI development.

Keywords:
HypoxiaNIRSPressure injuryStO2

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Area of Science:

  • Biomedical Engineering
  • Textile Science
  • Medical Devices

Background:

  • Tissue oxygen saturation (StO2) is critical in pressure injury (PI) development, as hypoxia leads to tissue necrotization.
  • Pressure-induced occlusion of blood circulation reduces StO2, causing hypoxia and subsequent PI, which are painful, slow to heal, and costly.
  • Early detection of hypoxia via near-infrared spectroscopy (NIRS) is essential for PI prevention.

Purpose of the Study:

  • To investigate the feasibility of a wearable NIRS device for long-term monitoring of StO2.
  • To develop a NIRS device integrated into textiles, ensuring it is comfortable and does not exert pressure.
  • To assess the efficacy of textile-based optical fibers for NIRS measurements.

Main Methods:

  • Investigated textile light emitters (LEs) and detectors (LDs) using knots and loops on a phantom.
  • Quantified light coupling efficiency of LEs and LDs based on loop configurations and fiber counts.
  • Validated the textile NIRS device through phantom inclusions mimicking hypoxia and in-vivo arm occlusion tests.

Main Results:

  • Textile knots and loops demonstrated comparable light coupling efficiency, with optimal performance at 3 loops per fiber.
  • Increased loops per fiber enhanced efficiency for both LEs and LDs.
  • The textile NIRS system successfully identified hypoxic inclusions in phantoms and showed expected StO2 decreases during in-vivo arm occlusion.

Conclusions:

  • Optical fibers integrated into textiles are feasible for creating wearable NIRS devices.
  • This technology holds promise for continuous, non-invasive StO2 monitoring to prevent pressure injuries.
  • Textile-based NIRS offers a comfortable and effective solution for hypoxia detection in PI prevention strategies.