Laboratory performance of oronasal <scp>CPAP</scp> and adapted snorkel masks to entrain oxygen and <scp>CPAP</scp>

Landry, Shane A.; Mann, D.; Djumas, Lee; Messineo, Ludovico; Terrill, Philip I.; Thomson, Luke; Beatty, Caroline; Hamilton, Garun S.; Mansfield, Darren; Edwards, Bradley A.; Joosten, Simon A.

doi:10.1111/resp.13922

Cited by 9 publications

(8 citation statements)

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“…It should also be noted that only a few studies have been reported in the literature concerning the performance of the MM for alveolar recruitment as well as gas exchange when used as a CPAP device. In this context, Landry et al compared the performances of a snorkel mask and oronasal CPAP on two healthy male volunteers [ 41 ]. The experiments were conducted with controlled O 2 and a positive pressure delivery system.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the use of full-face snorkeling masks as non-invasive ventilation (NIV) devices for patient oxygenation (ventilation) has been reported [37][38][39]. In this case, a 3D-printed valve connects the mask to a standard non-invasive ventilation system working with either a bilevel or continuous positive airway pressure (BPAP or CPAP mode, respectively) [40,41]. Such a retrofitted device has been proposed to help non-critical patients, leaving the use of invasive ventilators for the most critical patient cases [40].…”

mentioning

confidence: 99%

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Overview of the User Experience for Snorkeling Mask Designs during the COVID-19 Pandemic

Profili

Dubois²,

Karakitsos

et al. 2021

Healthcare

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During the first wave of the COVID-19 pandemic, industries and academic institutes have collaborated to resolve the worldwide medical supply shortage issues. Innovative designs of 3D-printed items were proposed and developed by the maker community as a temporary solution to address the lack of personal protective equipment. An overview of global ongoing and past initiatives during the COVID-19 pandemic along with their challenges on retrofitting full-face snorkeling masks for healthcare applications such as splash-proof face shields, respirator masks and non-invasive ventilation systems are reported in this contribution. This study reviews these global initiatives and challenges. From our analysis, the present situation highlights the need to build solid networks between healthcare institutes and the different rapid prototyping initiatives. A clear feedback system needs to be implemented to facilitate effective collaboration between engineering (maker) and healthcare teams, to optimize the available human resources, and to achieve adequate product developments responding to the needs of healthcare workers.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Overview of the User Experience for Snorkeling Mask Designs during the COVID-19 Pandemic

Profili

Dubois²,

Karakitsos

et al. 2021

Healthcare

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show abstract

“…However, laboratory-based tests (using healthy volunteers) of this improvised solution found it to provide a viable emergency substitute in only limited contexts. The percentage of inspired oxygen was consistently lower, and the level of carbon dioxide accumulation was higher, with the adapted snorkel masque compared to a standard CPAP masque ( Landry et al., 2020 ; Noto et al., 2020 ). Furthermore, the use of higher delivery pressures resulted in excessive leakage from the forehead seal, which would present a risk of spreading aerosolised virus from an infected patient ( Landry et al., 2020 ).…”

Section: Resultsmentioning

confidence: 90%

Do responses to the COVID-19 pandemic anticipate a long-lasting shift towards peer-to-peer production or degrowth?

Dartnell

Kish

2021

Sustainable Production and Consumption

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The COVID-19 pandemic simultaneously triggered a sudden, substantial increase in demand for items such as personal protection equipment and hospital ventilators whilst also disrupting the means of mass-production and international transport in established supply chains. Furthermore, under stay-at-home orders and with bricks-and-mortar retailers closed, consumers were also forced to adapt. Thus the pandemic offers a unique opportunity to study shifts in behaviour during disruption to industrialised manufacturing and economic contraction, in order to understand the role peer-to-peer production may play in a transition to long-term sustainability of production and consumption, or degrowth. Here, we analyse publicly-available datasets on internet search traffic and corporation financial returns to track the shifts in public interest and consumer behaviour over 2019 – 2020. We find a jump in interest in home-making and small-scale production at the beginning of the pandemic, as well as a substantial and sustained shift in consumer preference for peer-to-peer e-commerce platforms relative to more-established online vendors. In particular we present two case studies – the home-made facemasks supplied through Etsy, and the decentralised efforts of the 3D printer community – to assess the effectiveness of their responses to the pandemic. These patterns of behaviour are related to new modes of production in line with ecological economics and as such add capacity to a broader prefiguration of degrowth. We suggest an adoption of a new “fourth wave” of DIY culture defined by enhanced resilience and degrowth to continue to add capacity to a prefigurative politic of degrowth.

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“… 1 , 2 , 3 In Le Havre hospital (France), between September and December 2020, around 30 patients were treated with bilevel home devices in CPAP mode using vented oronasal masks. In contrast with bench studies that reported high FiO 2 with oxygen flow rates < 30 L/min in optimal experimental conditions (i.e., low minute ventilation, good pulmonary compliance and no leakage), 4 , 5 many patients required O 2 flow rates > 70 L/min to maintain oxygen saturation (SpO 2 ) ≥ 90%. We hypothesised that due to the high respiratory demand of patients with severe Covid-19, a high O 2 flow rate would be required to reach adequate pressure levels with CPAP, thereby substantially increasing the oxygen flow rate needed to achieve a high FiO 2 .…”

mentioning

confidence: 85%

High O2 Flow Rates Required to Achieve Acceptable FiO2 in CPAP-Treated Patients With Severe Covid-19: A Clinically Based Bench Study

Lebret

Fresnel²,

Prieur

et al. 2021

Archivos de Bronconeumología (English Edition)

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Laboratory performance of oronasal CPAP and adapted snorkel masks to entrain oxygen and CPAP

Cited by 9 publications

References 1 publication

Overview of the User Experience for Snorkeling Mask Designs during the COVID-19 Pandemic

Overview of the User Experience for Snorkeling Mask Designs during the COVID-19 Pandemic

Do responses to the COVID-19 pandemic anticipate a long-lasting shift towards peer-to-peer production or degrowth?

High O2 Flow Rates Required to Achieve Acceptable FiO2 in CPAP-Treated Patients With Severe Covid-19: A Clinically Based Bench Study

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