Author: Andrew R Plummer; Jonathan l du Bois; Siu Man Lee; Patrick Magee; Jens Roesner; Harinderjit S Gill
Title: The BathRC model: a method to estimate flow restrictor size for dual ventilation of dissimilar patients Document date: 2020_4_17
ID: cnkldzw9_79
Snippet: A key part of this contribution is that the model is simple to implement, for example as a spreadsheet. An example is provided at the link on the first page. This allows clinicians to estimate the flow restriction needed to match patient requirements. The challenge remains, however, to source a flow restrictor which is medically acceptable, and ideally adjustable. The 3D printed designs that are emerging need to be proven to be inert, sterilisabl.....
Document: A key part of this contribution is that the model is simple to implement, for example as a spreadsheet. An example is provided at the link on the first page. This allows clinicians to estimate the flow restriction needed to match patient requirements. The challenge remains, however, to source a flow restrictor which is medically acceptable, and ideally adjustable. The 3D printed designs that are emerging need to be proven to be inert, sterilisable, and durable in the breathing system environment. The fixed restrictor used in this study -in fact a non-return valve -is medically approved, and provided around 10% differentiation between the two loops. Two or more could be used in series to provide a greater restriction, but an adjustable flow restrictor would be far easier to use.
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