Want this question answered?
The medical term for the inner diameter of a tube is "lumen."
The central hollow tube of an artery is known as the arterial lumen. Lumen is the general term for the hollow part of any tubular structure.
NG (nasal) generally have smaller lumen. An OG (oral) has a larger lumen size. They shouldn't be interchanged. Check the lumen sizes.
Suction lumen, Balloon, delivery lumen, airway suction port, gas delivery port
It is a two lumen tube that removes gastric contents. One lumen is a suction and the other is an air vent. The air vent never clamps or connects to the suction.
lumen - the central opening within a tube or hollow organ.
An Ewald tube is a large lumen tube usually placed in the orogastric tract. It is used in overdose and bariatric patients
the lumen of a sieve tube
body tube
Esophageal tracheal combitube (ETC). The ETC is a double-lumen tube, combining the function of an esophageal obturator airway and a conventional endotracheal airway.
The lumen is the opening of the tube through which the "stuff" made by the gland exits. Some of that stuff (secretions) has hardened.
Ventricles & central canal of spinal cord