- The act or process of sucking. SEE ALSO: aspiration (1), aspiration (2). [L. sugo, pp. suctus, to suck]- Wangensteen s. a modified siphon that maintains constant negative pressure, used with a duodenal tube for the relief of gastric and intestinal distention. SYN: Wangensteen tube.
* * *suc·tion 'sək-shən n1) the act or process of sucking2 a) the act or process of exerting a force upon a solid, liquid, or gaseous body by reason of reduced air pressure over part of its surfaceb) force so exerted3) the act or process of removing secretions or fluids from hollow or tubular organs or cavities by means of a tube and a device (as a suction pump) that operates on negative pressuresuction vt to remove from a body cavity or passage by suction
* * *n.the use of reduced pressure to remove unwanted fluids or other material through a tube for disposal. Suction is often used to clear secretions from the airways of newly born infants to aid breathing. During surgery, suction tubes are used to remove blood from the area of operation and to decompress the stomach (nasogastric suction) and the pleural space of air and blood (chest suction).
* * *suc·tion (sukґshən) [L. sugere to suck] aspiration of gas or fluid by mechanical means.
Medical dictionary. 2011.