In regards to endotracheal suctionning protocol, how far can we insert the French catheter? I can’t find the answer anywhere in the protocol book, companion document or BLS standards.

Question: The latest Base Hospital Memorandum from April 6th says we are to withhold suction via an endotracheal or tracheostomy tube unless using a closed system suction unit. Does this mean we are to withhold suction ONLY via endotracheal or tracheostomy tube? Can we suction an airway full of vomit or blood?