A. Rectal Tube.
B. Ryle’s naso-gastric tube.
D. Tri lumenal tube.
The surgical tube shown in the picture above represents Ryle’s naso-gastric tube.
A nasogastric tube is a narrow bore tube passed into the stomach via the nose. It is used for short- or medium-term nutritional support, and also for aspiration of stomach contents – eg, for decompression of intestinal obstruction
A wide bore tube is used if drainage is needed; otherwise, a finer bore tube is used. Fine bore feeding tubes (gauge less than 9) cause less discomfort and less risk of rhinitis, pharyngitis or oesophageal erosion.