How prevalent is cystitis?

Ann Intern Med. 1993 Sep5;119(6):454-60.

A reassessment of the importance of "low-count" bacteriuria in young women with acute urinary symptoms.

Kunin CM , White LV, Hua TH.

Department of Internal Medicine, Ohio State University, Columbus 43210-1240.

Objectives:

To determine whether a statistical association exists between "low-count" bacteriuria (> 10(2) to 10(4) colony-forming units/mL) and acute urinary symptoms in young women.

Design:

Prospective, case-control study.

Setting:

Gynecology clinic at a student health center.

Patients:

Women with or without urinary or vaginal symptoms.

Measurements:

History of urinary infections and sexual activity. Quantitative determination of bacteriuria and pyuria and bacterial species; urine leukocyte esterase test; specific gravity; creatinine levels; vaginal leukocytes; and in-vitro culture of urine.

Results:

The Frequency of recent sexual activity, pregnancies, and contraceptive practices was not statistically different between women with acute urinary symptoms and asymptomatic controls. Escherichia coli and Staphylococcus saprophyticus were the only microorganisms statistically associated with urinary symptoms and pyuria (P< 0.001). Low counts of these organisms were found in 10.2% of asymptomatic women. As the bacterial count increased, the association between these organisms and symptoms increased, and a step-wise increase occurred in the Frequency and magnitude of pyuria, but the specific gravity and urine creatinine levels remained unchanged. Escherichia coli, even at low counts, grew well in the patients' own urine. Pyuria (> 20 leukocytes/mm3) was present in 19.6% of asymptomatic women and was associated with vaginal leukorrhea.

Conclusions:

"Low-count" bacteriuria was statistically more frequent among young women with urinary symptoms than among asymptomatic controls. The low counts could not be explained by dilution of the urine or failure of the bacteria to grow well in the patients' urine. These findings suggest that the infection was not established in the bladder urine and that "low-count" bacteriuria might be an early phase of urinary tract infection.

Please click on the required question.

• 1  How is urine produced?
• 2  What is cystitis?
• 3  How prevalent is cystitis?
• 4  What is honeymoon cystitis?
• 5  What are Frequency and nocturia?
• 6  How prevalent are Frequency and nocturia?
• 7  What is urinary incontinence?
• 8  What is stress incontinence of urine?
• 9  What is urgency, urge incontinence and the urge syndrome?
• 10 What causes stress and urge incontinence?
• 11 What is dribbling incontinence?
• 12 How prevalent is urinary incontinence?
• 13 What is the urethral syndrome?
• 14 How can I record my bladder problems and monitor the effects of treatment?
• 15 What simple measures are available to reduce urinary incontinence?
• 16 What are pelvic floor exercises?
• 17 How successful are pelvic floor exercises?
• 18 What is bladder training?
• 19 How effective is bladder training?
• 20 Are there any alternatives to bladder training for urgency symptoms?
• 21 If simple measures do not suffice, what else is available for the treatment of urinary stress incontinence?
• 22 What are urodynamic studies?
• 23 Where can I obtain further information about bladder problems?
• 24 Support Groups.

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