Tuesday, July 3, 2012

Urinary Tract Infection (UTI)

A urinary tract infection (UTI) is a bacterial infection that affects part of the urinary tract. When it affects the lower urinary tract it is known as a simple cystitis (a bladder infection) and when it affects the upper urinary tract it is known as pyelonephritis (a kidney infection). Symptoms from a lower urinary tract include painful urination and either frequent urination or urge to urinate (or both), while those of pyelonephritis include fever and flank pain in addition to the symptoms of a lower UTI. In the elderly and the very young, symptoms may be vague or non specific.  - wikipedia

he most common causes of UTI infections (about 80%) are E. coli bacterial strains that usually inhabit the colon. However, many other bacteria can occasionally cause an infection (for example, Klebsiella, Pseudomonas, Enterobacter, Proteus, Staphylococcus, Mycoplasma, Chlamydia, Serratia and Neisseria spp.), but are far less frequent causes than E. coli. In addition, fungi (Candida and Cryptococcus spp.) and some parasites (Trichomonas and Schistosoma) also may cause UTIs; Schistosoma causes other problems, with bladder infections as only a part of its complicated infectious process. In the U.S., most infections are due to Gram-negative bacteria with E. coli causing the majority of infections.

Females have a higher risk for UTIs than most males, probably because of their anatomy; other risk factors for UTIs include any condition that may impede urine flow (e.g., enlarged prostate, congenital urinary tract abnormalities, and inflammation). Patients with catheters or those who undergo urinary surgery and men with enlarged prostates are at higher risk for UTIs.

Symptoms:
  • frequent urge to urinate, accompanied by pain or burning on urination. (dysuria)
  •  The urine often appears cloudy and occasionally dark, if blood is present. 
  • Women often have lower abdominal discomfort or feel bloated and experience sensations like their bladder is full.
  • abdominal pain
  • fever
  • Newborns and infants may develop fever or hypothermia, poor feeding, jaundice, vomiting, and diarrhea.

How to Diagnose UTI:
URINALYSIS
The best sample is a midstream sample of urine placed in a sterile cup because it usually contains only the pathogenic organisms instead of the transient organisms that may be washed from adjacent surfaces when the urine stream begins.
Other tests may be ordered to further define the extent of a UTI. They may include blood cultures, a complete blood count (CBC), intravenous pyelogram, a CT Scan or other specialized tests.

Treatment and Management:
  • Ciprofloxacin, Cefuroxime (antibiotics)
  •  Increase water intake
  • Buko juice, Eating cranberries or blueberries or drinking their unsweetened juice
  • Maintain proper hygiene
  • Prevent from drinking softdrinks/cola 
  • Prevent from eating junk foods
  • Lessen fatty, salty and sweet foods
  • Taking Vit. C, Eating pineapple
The following antibiotics are used to treat UTIs:
  • Beta-lactams, including penicillins and cephalosporins (for example, Amoxicillin, Augmentin, Keflex, Duricef, Ceftin, Lorabid, Rocephin, Cephalexin, Suprax, and others); many organisms have resistance to some of these drugs.
  • Trimethoprim-sulfamethoxazole combination antibiotic (for example, Bactrim DS and Septra); many organisms may show resistance.
  • Fluoroquinolones (for example, Cipro, Levaquin, and Floxacin) resistance is developing; also these should not be used in pregnancy or in the pediatric population.
  • Tetracyclines (for example, tetracycline, doxycycline, or minocycline) used most often for Mycoplasma or Chlamydia infections; like fluoroquinolones, they should not be used in pregnancy or by the pediatric population.
  • Aminoglycosides (for example, gentamycin, amikacin, and tobramycin) used usually in combination with other antibiotics to combat severe UTIs.
  • Macrolides (for example, clarithromycin, azithromycin, and erythromycin), used more often with some STD-caused urinary problems.
Complications:
Most UTIs cause no complications if they spontaneously resolve quickly (a few days) or if treated early in the infection with appropriate medications. However, there are a number of complications that can occur if the UTI becomes chronic or rapidly advances. Chronic infections may result in urinary strictures, abscesses, fistulas, and kidney damage. Rapid advancement of UTIs can lead to dehydration, kidney failure, sepsis, and death. Pregnant females with untreated UTIs may develop premature delivery and a low birth weight for the infant and run the risks of rapid advancement of the infection.

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