PMC7301626_01
: This figure shows the patient wearing a face mask. The mask is connected to the Boussignac valve, which is supplied with oxygen through the tube. Note the presence of a Hepa filter to limit the aerosolization of the virus
42399_2020_349_Fig1_HTML.jpg
PMC7301626_01_42399_2020_349_Fig1_HTML.jpg
Fig1
HEPA filter was placed in front of the expiratory leak in order to limit the aerosolization in the room) (see Fig. 1). However, our patient, although willing to accept the treatment, did not tolerate it, with a daily use of the Boussignac valve for only 2-3 h per day.