As to the question of rules regarding when and where peaceful protests may be held, that's highly dependent on the specific location of the protest.
The venturi mask, also known as an air-entrainment mask (and sometimes by the brand name VentimaskÂ®), is a medical device to deliver a known oxygen concentration to patients on controlled oxygen therapy.
PROCEDURE FOR USING A MANUAL RESUSCITATION BAG VALVE MASK (BVM) âAMBU BAGâ A manual bag valve mask is used to deliver breaths manually when a student is unable to breathe on his or her own. This device may be used with a mask to cover the nose and mouth or with a special adaptor for a tracheostomy tube. POINTS TO REMEMBER