suction

suction (suk´shun)

The act or process of sucking. See also aspiration (1) , aspiration (2) . [L. sugo, pp. suctus, to suck]
posttussive s.a s. sound heard on auscultation over a pulmonary cavity at the end of a cough.
Wangensteen s.a modified siphon that maintains constant negative pressure, used with a duodenal tube for the relief of gastric and intestinal distention.Wangensteen tube;

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