The phrase "active drainage" is correct and usable in written English.
It can be used in medical or engineering contexts to refer to a system or process that facilitates the continuous removal of fluids from a specific area.
Example: "The patient requires active drainage to prevent fluid accumulation in the surgical site."
Alternatives: "continuous drainage" or "dynamic drainage".
It was erythematous and fluctuant, but with no active drainage.
But the water that has kept Flag Fen preserved until now is seeping away, due in part to climate change but largely to active drainage and the sprawl of neighbouring Peterborough, which nearly reaches the borders of the site.
On the other hand, the northern portion of the tableland area is dissected by a number of short and deep consequent valleys acting during rainy seasons as active drainage lines.
New Verapaz was designed to meet housing needs for 244 affected (or potentially affected) families that lie within the 50 meter boundary of an active (or potentially active) drainage.
Other 3D effects were simplified; for example, the varying permeability due to the variable injection hole distance and the exact direction of the 27 active drainage holes in space (Fig. 19).
Eventual application of the active drainage system was evaluated too.
Citing the inherent danger of living in close proximity to natural drainages, Civil Protection and the National Assembly passed a law in 2003 prohibiting construction and development of land in close proximity (50 meters) to active (or potentially active) drainages (Viceministerio de Vivienda y Desarrollo Urbano de El Salvador 2013).
A novel active venous drainage perfusion circuit was designed to achieve effective venous return through small venous cannulas.
In chronic osteomyelitis, infection remains active, and periodic drainage to the surface via sinus tracts may occur.
Active control of drainage systems in arid irrigated regions is a developing concept that is currently being evaluated around the world.
In fact, visualisation of the underlying conditions (such as postoperative anastomotic leak, bowel obstruction, abscesses amenable to drainage, active or stricturing CD, fistulising or recurrent tumour) allows directed treatment, thus resulting in decreased rates of failed conservative management and higher likelihood of therapeutic success [4, 5].
