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Related Concept Videos

Personal Protective Equipment01:20

Personal Protective Equipment

2.0K
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:
2.0K
PPE Use in Healthcare Settings I: Donning01:22

PPE Use in Healthcare Settings I: Donning

1.4K
Donning PPE must be completed before contact with the patient. This process protects from infectious agents. The sequence and action included in each donning are critical, and the steps must be systematic to avoid exposure to pathogens. The institutional policy also needs to be followed while donning PPE. The pre-donning preparations are gathering equipment, inspecting the PPE equipment for tears, holes, or damage, removing jewelry, removing any garments below the elbows, and tying the hair...
1.4K
Administering Oxygen by Mask01:30

Administering Oxygen by Mask

1.2K
Administering Oxygen by Mask
Administering oxygen by mask is a common nursing intervention that provides supplemental oxygen to patients with respiratory distress or chronic lung conditions. This procedure involves delivering oxygen at a specified rate through a face mask connected to an oxygen source.
Equipment
The equipment necessary for this procedure includes:
1.2K
PPE Use in Healthcare Settings II: Doffing01:10

PPE Use in Healthcare Settings II: Doffing

1.3K
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.
1.3K
Transmission-based Precautions II: Airborne and Protective Environment01:25

Transmission-based Precautions II: Airborne and Protective Environment

1.7K
Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
1.7K
Oxygen Delivering System I: Nasal Cannula and Face Mask01:26

Oxygen Delivering System I: Nasal Cannula and Face Mask

967
The human body requires oxygen to function, and when the natural process of respiration is hindered, external devices, including the following, are needed to help deliver this vital gas.
Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
967

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Effects of Surgical Masks on Cardiopulmonary Function in Healthy Subjects
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Published on: February 12, 2021

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Quantitative Protection Factors for Common Masks and Face Coverings.

David Leith1,2, Christian L'Orange1, John Volckens1

  • 1Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado 80521, United States.

Environmental Science & Technology
|February 19, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a lab method to estimate mask protection factors without human volunteers. Finer fiber masks, like electret, offer superior filtration and moderate resistance, aiding pandemic risk communication.

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Area of Science:

  • Aerosol science and public health

Background:

  • Mask performance is crucial for mitigating infectious aerosol transmission.
  • Real-world mask effectiveness is complex, influenced by wearer behavior, facial anatomy, and environmental factors, making laboratory prediction challenging.

Purpose of the Study:

  • To develop a method for estimating mask protection factors without human volunteers.
  • To enable fair and efficient comparison of different mask types based on laboratory filtration efficiency measurements.

Main Methods:

  • Developed a laboratory-based approach to estimate protection factors by controlling variables like filtration efficiency, particle size, leakage, and ventilation.
  • Evaluated seven common mask types and a hypothetical 99% efficient mask using filtration efficiency measurements.

Main Results:

  • Mask performance varied significantly, with cotton masks limited by fiber size.
  • Masks with finer fibers, especially electret types, demonstrated excellent filtration efficiency and acceptable flow resistance.
  • The proposed method allows for objective comparison of mask performance under controlled conditions.

Conclusions:

  • Laboratory-based protection factor estimation is feasible and valuable for mask assessment.
  • Finer fiber materials, particularly electret fibers, are key to high-performance masks.
  • This research supports informed decision-making and risk communication during public health crises like the COVID-19 pandemic.