A post-operative patient shows erythema, considerable drainage, and a greenish hue. The nurse should take note of the most recent WBC and temperature readings.
Drainage
The natural or artificial removal of surface and subsurface water from a region with an excess of water is referred to as drainage. Most agricultural soils have adequate internal drainage to prevent severe waterlogging (anaerobic conditions that damage root growth), but many soils require artificial drainage to boost production or manage water supply. Sewerage and drainage systems existed in the Indus Valley civilization. Water and drainage services were available to all dwellings in the great cities of Harappa and Mohenjo-daro. Waste water was routed to covered gravity sewers that ran alongside main streets.
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