Pressure-Regulated Ventilator Splitting (PReVentS): A COVID-19 Response Paradigm from Yale University

Micha Sam Brickman Raredon; Clark Fisher; Paul Heerdt; Ranjit Deshpande; Steven Nivison; Elaine Fajardo; Shamsuddin Akhtar; Thomas Raredon; Laura E. Niklason

a. Use a disposable PEEP valve (eg. Disposable PEEP valve from Ambu Inc.), that has adjustable PEEP from 1.5 -20 cmH2O, with a 30mm connector. These valves are typically attached to the outflow of a bag valve mask assembly to apply PEEP to patients undergoing mask ventilation ( Figure 3 ). b. Cut flexible 1-5/8" ID tubing to 3-3/4" length, and attach to 1-1/2" reducing connector and fasten with ziptie. c. Cut 1" ID tubing to 2-3/4" length and attach to other end of reducing connector. d. Set PEEP valve to desired value, and then insert valved end of PEEP valve into the flexible 1-5/8" tubing (see Figure 5 for final valve insertion step). Fasten with ziptie if desired. e. Repeat these steps 3 more times, to produce a total of 4, in-line pressure-gated valves. f. Setting of pressure-gated valve values is described below. . CC-BY-NC-ND 4.0 International license It is made available under a author/funder, who has granted medRxiv a license to display the preprint in perpetuity.