Polyurethane NG tube (Viasys Corflo), 8 Fr × 36 in (91 cm). This fine bore tube is appropriate for longer use (up to 4 weeks). Types of<unk>  tubes include: * Levin catheter, which is a single lumen, small bore NG tube. It is more appropriate for administration of medication or nutrition. * Salem Sump catheter, which is a large bore NG tube with double lumen. This avails for aspiration in one lumen, and venting in the other to reduce negative pressure and prevent gastric mucosa from being drawn into the catheter. * Dobhoff tube, which is a small bore NG tube with a weight at the end intended to pull it by gravity during insertion. The name "Dobhoff" refers to its inventors, surgeons Dr. Robert Dobbie and Dr. James Hoffmeister, who invented the tube in 1975.
Nasogastric intubation
Tracheal intubation
Basic airway management
Advanced airway management
Surgical airway management
Blind insertion airway device
Tracheotomy
Laryngeal mask airway