A study of female urinary tract infection caused by urodynamic investigation.
OBJECTIVE
The purpose of this study was to assess the prevalence of female urinary tract infection before and after urodynamic investigation and to identify the risk factors for urinary tract infection after urodynamic investigation.


METHODS
Eight hundred twenty-two consecutive incontinent women were recruited. All women were "double-screened" and treated for urinary tract infection before urodynamic investigation: first by mid stream urine culture 4 to 6 weeks before investigation and then by reagent strips for urine leukocytes and nitrites at the time of investigation. The investigation was postponed until the urinary tract infection had been treated. All women then received a standard urodynamic investigation.


RESULTS
The prevalence of urinary tract infection before urodynamic investigation was 5.1% (95% CI, 3.6-6.6), and the prevalence after the investigation was 8.4% (95% CI, 6.5-10.3). Three independent risk factors were identified: age >or=70 years (odds ratio, 1.99; 95% CI, 1.14-3.48), previous continence surgery (odds ratio, 1.90; 95% CI, 1.05-3.43), and urinary tract infection before urodynamic investigation (odds ratio, 3.13; 95% CI, 1.43-6.83). The 3 most common uropathogens in the urinary tract infections after the urodynamic investigation were Escherichia coli (46.3%), Enterococcus spp (16.4%), and Enterococcus faecalis (11.9%).


CONCLUSIONS
Despite a stringent screen-and-treat protocol before urodynamic investigation, patients still experienced urinary tract infection.
Yip
Shing-Kai
SK
Departments of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong. yipsk@cuhk.edu.hk
Fung
Kitty
K
Pang
Man-Wah
MW
Leung
Peter
P
Chan
Daniel
D
Sahota
Daljit
D
D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D016015:Logistic Models; D008875:Middle Aged; D015995:Prevalence; D011336:Probability; D011379:Prognosis; D011446:Prospective Studies; D018570:Risk Assessment; D012720:Severity of Illness Index; D016482:Urinalysis; D014546:Urinary Catheterization; D014549:Urinary Incontinence / Q000175:diagnosis*; D014552:Urinary Tract Infections / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D014563:Urodynamics