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Pulmonary resuscitators designed to provide respiratory support from regulated-pressure (usually 50 psi) oxygen or air supplies. These resuscitators typically consist of a standard mask, a connector that has an outlet appropriate to fit any standard mask (22 mm in diameter) or attach to an endotracheal or tracheostomy tube (15 mm in diameter), and control devices (e.g., automatic frequency and tidal volume settings, manual operation). Most of these resuscitators use internal batteries for control and display device operation. Pneumatic pulmonary resuscitators deliver high flow rates and high oxygen concentrations and avoid direct rescuer/patient contact; they may be used during emergencies involving pulmonary arrest if an oxygen cylinder, a piped wall outlet, or a breathing air supply is present.
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