Nasogastric tubes

Tube	Sizes	Length	Lumen	Function	Material	Comments
Salem-sump	6-18 F	60-122 cm	Double	Gastric decompression	PVC	Second lumen vents to atmosphere to prevent suctioning of tube to gastric mucosa. Radio opaque line along its length.
				Medication delivery
				Enteral feeding
Levin tube	8-20 F	122 cm	Single	Gastric decompression	PVC	Markings at 45, 55, 65, 75 cm. Radio opaque line along its length.
				Medication delivery
				Enteral feeding
Ryle's tube	8-20 F	105 cm	Single	Gastric aspiration	PVC	Markings at 50, 60, 70 cm. Radio opaque line along its length. Weighted end.
				Enteral feeding
Enteral feeding tubes (Examples: Abbot Nutrition enteral feeding tube; Cook Endoscopy NJFT; Corpak Medical Systems CORFLO tubes; Covidien tubes; Teleflex Medical tubes)	3.5-12 F	31-240 cm	Single to triple	Enteral feeding	Polyurethane, silicone, PVC	Various features may be present: Stylet used for <12 F tubes to stiffen the tube for insertion and confirm placement radiographically Radio opaque markers each cm Weighted tip to allow propulsion into duodenum by peristalsis Magnets to facilitate jejunal placement Suture loops to allow endoscopic placement

PVC: polyvinyl chloride.

Graphic 52488 Version 2.0