A force created by the action of sucking.
The aspiration of a gas, liquid, or solid by reducing air pressure over its surface. Pressure then forces the material into the vacuum. Suction has a number of uses in medicine. For example, nasogastric suction is the removal of a gas, liquid, or solid from the stomach or small intestine by insertion of a tube through the nose. This procedure is performed in situations such as the removal of toxic substances, decompression of the stomach or small intestine, and preparation for gastrointestinal operations.
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.
The use of a reduction in pressure to clear away fluids or other material through a tube. Suction is used to remove blood from the site of a surgical operation and to clear the airways in the earliest stage of resuscitation.
The drawing of fluids or solids from a surface, using negative pressures.
The extraction of undesired fluid or semi-fluid substances from the body using a syringe and a hollow needle, or alternatively, through the use of an intestinal tube and a mechanical pump.