Study for Testing and Reviewing Improvised PPE Effectiveness 3 (STRIPE-3)

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

10 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-05-01

Study Completion Date

2020-06-05

Brief Summary

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Personal protective equipment (PPE) is vital to ensuring staff safety during the COVID-19 pandemic. Properly designed, formal PPE (fPPE) is in increasingly short supply, and a series of improvised PPE (iPPE) designs have been widely circulated on the internet, particularly on social media. Groups have started to publicise these devices through websites and the lay press. Some are even using crowd-funding to finance the purchase of these systems with the intention of supplying NHS workers in place of approved systems.

It is not clear what degree of testing these systems have undergone. The investigators are already planning trials formally investigating the quality of seal offered by these improvised systems. Currently the team are investigating a designed based on a modified snorkel mask (STRIPE-1). In the current study the investigators wish to extend this investigation to consider the atmosphere within the mask.

This is an important question, as modifications to the snorkel design have changed the way gases mix within the system. This might increase the risk that the user will rebreathe expired gases, which will dilute the amount of oxygen available to them, and increase the carbon dioxide levels to which they are exposed. At extreme deviations, these might pose a potential health hazard over and above the risks posed by COVID-19 exposure via a poor mask seal.

This study will therefore recruit a convenience sample of 10, and request they wear two masks sequentially. These masks will comprise: a formally designed and tested commercial FFP3 mask, and one design of improvised PPE, based on the snorkel design available on the internet.

Each mask will be worn for a total of 40 minutes. In the first 20 minutes measurements will be taken with the user at rest. In the second 20 minutes measurements will be taken while the user undertakes light exercise.

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Detailed Description

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Conditions

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Healthy

Study Design

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Observational Model Type

CASE_CROSSOVER

Study Time Perspective

PROSPECTIVE

Interventions

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Snorkel-based improvised personal protective equipment

An improvised PPE design based on a full face snorkel mask mated to a heat-and-moisture exchange filter via a 3D printed adaptor.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Willing and able to give informed consent for participation in the study
* Healthy adults, male or female, aged 18 or more
* Clean-shaven at the point of testing
* Willing and able to undertake 20 minutes of light exercise e.g. stepping

Exclusion Criteria

* They have facial hair that would disrupt the seals of the mask
* They have significant facial injuries or malformations that preclude a good mask seal

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No