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Related Concept Videos

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Personal protective equipment (PPE) is unique clothing or equipment worn by an employee to minimize or prevent exposure to infectious agents. PPE creates a barrier between the employee and the infectious materials. PPE must be readily available in the patient care area. PPE includes gloves, gowns and aprons, masks and respirators, goggles, face shields, shoes, and headcovers:
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The sequence of removing or doffing PPE starts with the gloves, as they are the most contaminated. Next is removal of the face shield or goggles, as they would interfere with removing other PPE. Then remove the gown, followed by the mask or respirator. Perform hand hygiene between steps if hands become contaminated and immediately after removing all PPE. Generally, the outside front and sleeves of the isolation gown, the goggles or the mask, the respirator, and the face shield are contaminated.
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A Positive-Pressure Environment Disposable Shield (PEDS) for COVID-19 Health Care Worker Protection.

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During health crises, improvised personal protective equipment (PPE) poses infection risks. This study presents an affordable, disposable positive-pressure head isolation unit to enhance healthcare worker safety and prevent disease spread.

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Area of Science:

  • Healthcare Engineering
  • Infectious Disease Control
  • Medical Device Design

Background:

  • COVID-19 pandemic led to critical shortages of medical-grade personal protective equipment (PPE).
  • Increased demand and supply chain disruptions necessitated the use of untested, improvised PPE (iPPE) by healthcare providers.
  • Improvised PPE and item repurposing heighten risks of provider infection and nosocomial disease transmission.

Purpose of the Study:

  • To describe an inexpensive, rapidly constructible, disposable positive-pressure head isolation unit.
  • To provide a secondary barrier device to mitigate infection risks for healthcare workers (HCWs) and patients.
  • To offer a practical solution for preserving existing PPE and enhancing safety during pandemics.

Main Methods:

  • Development of a low-cost (under $5 USD) disposable positive-pressure head isolation unit.
  • Utilized readily available materials in healthcare settings for rapid construction.
  • Successful deployment in Taiwan during the 2003 SARS outbreak and the COVID-19 pandemic.

Main Results:

  • The described head isolation unit offers an inexpensive and effective secondary barrier.
  • Deployment demonstrated feasibility and utility during past outbreaks (SARS) and the COVID-19 pandemic.
  • The unit, when worn by HCWs with an air source, may offer superior protection in aerosol-generating environments compared to patient-placed coverings.

Conclusions:

  • The positive-pressure head isolation unit is a viable, cost-effective strategy to enhance HCW protection against airborne pathogens.
  • This intervention can reduce the risk of provider infection and nosocomial spread.
  • The design's adaptability and low cost make it suitable for widespread implementation during public health emergencies.