Urinary Tract Infection (UTI)
Kumud P Mehta
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Urinary Tract Infection (UTI) - Introduction
Urinary tract infection is a bacterial invasion of kidneys and the urinary tract. It is designated as pyelonephritis or upper UTI when the infection involves mainly renal parenchyma and pelvicalyceal system. Lower UTI involves infection of urinary bladder and urethra.

Causes
UTI is predominantly caused by enterococci like certain strains of E.Coli and other gram negative bacilli such as Proteus, Klebsiella, and Pseudomonas, which are uropathogenic. It is rarely caused by tubercular bacilli.

In children below the age of 3-4 years, UTI is associated with underlying congenital anomalies such as posterior urethral valves, PUJ obstruction, vesicoureteral reflux (VUR), bladder diverticuli or ureteroceles etc.


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