Initial pyuria (lat. pyuria initialis) is the appearance of pus in the urine in the first 24-48 hours after catheterization of the bladder.
Initial pyuria often develops after catheterization of the bladder and is considered a normal reaction of the body to irritation of the mucous membrane of the urinary tract by a foreign body.
Reasons for the development of pyuria initial:
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Mechanical damage to the mucous membrane of the urinary tract by a catheter.
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Infection in the urinary tract during catheterization.
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Reproduction of microorganisms on the surface of the catheter with subsequent penetration into the mucous membrane.
Initial pyuria, as a rule, does not require treatment with antibiotics and goes away on its own after removal of the catheter. However, in some cases it can progress to the development of a urinary tract infection.
Therefore, if initial pyuria persists for a long time after removal of the catheter, antibiotic therapy may be required.