Land drainage (agriculture)

drainage /drain·age/ (drān´ij) systematic withdrawal of fluids and discharges from a wound, sore, or cavity.

capillary drainage that effected by strands of hair, surgical gut, spun glass, or other material of small caliber which acts by capillary attraction.

closed drainage drainage of an empyema cavity carried out with protection against the entrance of outside air into the pleural cavity.

manual lymph drainage the application of light rhythmic strokes, similar to those of effleurage, in the direction of the heart to increase the drainage of lymph from the involved structures.

open drainage drainage of an empyema cavity through an opening in the chest wall into which one or more rubber drainage tubes are inserted, the opening not being sealed against the entrance of outside air.

postural drainage therapeutic drainage in bronchiectasis and lung abscess by placing the patient head downward so that the trachea will be inclined below the affected area.

through drainage that achieved by passing a perforated tube through the cavity, so that irrigation may be effected by injecting fluid into one aperture and letting it escape out of another.

drain·age (dr

The removal of fluid or purulent material from a wound or body cavity.

drainage

[drā′nij]

Etymology: AS, drachen, teardrop

the removal of fluids from a body cavity, wound, or other source of discharge by one or more methods. Closed drainage is a system of tubing and other apparatus attached to the body to remove fluid in an airtight circuit that prevents environmental contaminants from entering the wound or cavity. Continuous bladder irrigation is drainage in which a body area is washed out by alternately flooding and then emptying it with the aid of gravity, a technique that may be used in treating a urinary bladder disorder. Open drainage is drainage in which discharge passes through an open-ended tube into a receptacle. Suction drainage uses a pump or other mechanical device to assist in extracting a fluid. See also postural drainage, tidal drainage.

drainage [drān´ij]

systematic withdrawal of fluids and discharges from a wound, sore, or cavity.

capillary drainage that effected by strands of hair, surgical gut, spun glass, or other material of small caliber which acts by capillary attraction.

closed drainage airtight or water-tight drainage of a cavity so that air or contaminants cannot enter; for example, drainage of an empyema cavity carried out by means of an intercostal drainage tube passing into an airtight receiving vessel.

open drainage drainage of a cavity through an opening in the chest wall into which one or more drainage tubes are inserted, the opening not being sealed against the entrance of outside air.

percutaneous drainage drainage of an abscess or collection of fluid by means of a catheter inserted through the skin and positioned under the guidance of computed tomography or ultrasonography.

postural drainage see postural drainage.

tidal drainage drainage of the urinary bladder by an apparatus that alternately fills the bladder to a predetermined pressure and empties it by a combination of siphonage and gravity flow.

drainage,

n the placement or creation of a pathway from a deep lesion to the surface of the body to provide an avenue for the body to expel the byproducts of an infection or inflammation.

drainage

systematic withdrawal of fluids and discharges from a wound, sore or cavity.

drainage angle

iridocorneal angle.

capillary drainage

that effected by strands of hair, catgut, spun glass, or other material of small caliber which acts by capillary attraction.

closed drainage

drainage of an empyema cavity carried out with protection against the entrance of outside air into the pleural cavity.

open drainage

drainage of an empyema cavity through an opening in the chest wall into which one or more rubber drainage tubes are inserted, the opening not being sealed against the entrance of outside air.

peritoneal drainage

drainage of the peritoneum; limited by the rapid formation of adhesions and can only be accomplished with lavage or through an open cavity.

suction drainage

a source of continuous or intermittent negative pressure is used to maintain drainage in various sites, particularly negative pressure in the pleural cavity. A syringe and valve, one-way valve, vacuum tube or underwater drain can be used for this purpose.

drainage systems

see drain.

tidal drainage

drainage of the urinary bladder by an apparatus that alternately fills the bladder to a predetermined pressure and empties it by a combination of siphonage and gravity flow.

drainage tubes

see drain.

drainage

Surgery 1 The withdrawal of fluids from a body cavity or region 2 Discharge, see there. See Percutaneous transhepatic biliary.

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