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The human urinary system, also known as the urinary tract or renal system, consists of the kidneys, ureters, bladder, and the urethra. The purpose of the urinary system is to eliminate waste from the body, regulate blood volume and blood pressure, control levels of electrolytes and metabolites , and regulate blood pH .
A urinary tract infection (UTI) is an infection that affects a part of the urinary tract. [1] Lower urinary tract infections may involve the bladder ( cystitis ) or urethra ( urethritis ) while upper urinary tract infections affect the kidney ( pyelonephritis ). [ 10 ]
Endourology is the branch of urology that deals with the closed manipulation of the urinary tract. [19] It has lately grown to include all minimally invasive urologic surgical procedures. As opposed to open surgery, endourology is performed using small cameras and instruments inserted into the urinary tract.
A negative dipstick test does not exclude bacteriuria, as not all bacteria which can colonise the urinary tract are nitrate-reducing. The leukocyte esterase test indirectly detects the presence of leukocytes (white blood cells) in urine which can be associated with a urinary tract infection. In the elderly, the leukocyte esterase test is often ...
When it affects the lower urinary tract it is known as a bladder infection (cystitis) and when it affects the upper urinary tract it is known as a kidney infection (pyelonephritis). [9] Symptoms from a lower urinary tract infection include pain with urination, frequent urination, and feeling the need to urinate despite having an empty bladder. [8]
Urinary tract infections or cystitis are treated with antibiotics, many of which are consumed by mouth. Serious infections may require treatment with intravenous antibiotics. [25] Interstitial cystitis refers to a condition in which the bladder is infected due to a cause that is not bacteria. [26] [27]
This category reflects the organization of International Statistical Classification of Diseases and Related Health Problems, 10th Revision. Generally, diseases outlined within the ICD-10 codes R30-R39 within Chapter XVIII: Symptoms, signs and abnormal clinical and laboratory findings should be included in this category.
Risk factors include sexual intercourse, prior urinary tract infections, diabetes, structural problems of the urinary tract, and spermicide use. [2] [3] The mechanism of infection is usually spread up the urinary tract. [2] Less often infection occurs through the bloodstream. [1] Diagnosis is typically based on symptoms and supported by ...