Optimistic tension ventilation any of diverse sorts of mechanical ventilation by which gasoline is shipped in to the airways and lungs under constructive stress, manufacturing beneficial airway strain in the course of inspiration; it could be performed by way of either an endotracheal tube or a nasal mask. See also https://ventilation-installation78900.qodsblog.com/37682468/5-simple-techniques-for-ventilation-ductwork