Articles: bacteriuria-diagnosis.
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During the period from July to November 1984, 265 consecutive febrile infants younger than one year of age were evaluated in a pediatric emergency department. None had a source of infection on physical examination, and all were admitted with the diagnosis of "rule out sepsis." During the month of July, all patients with positive urine culture results had their urine sample collected by bag. In no instance was there a clinical diagnosis of urinary tract infection because of the presence of contaminant bacteria. ⋯ The technique utilized for collecting urine for culture in infants has a major impact on the incidence of urinary tract infection. The absence of pyuria is not a reliable indicator of the absence of urinary tract infection. Infants with urinary tract infection may have a transient loss in urine concentrating ability early in the course of their infection.
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Diagnosis and treatment of asymptomatic bacteriuria in pregnant patients can virtually eliminate pyelonephritis, the most common medical cause for antepartum hospitalization. However, the ever-increasing cost of the urine culture has led most clinicians away from routine urine screening. Uricult dip-slide paddles provide an inexpensive, efficient way to screen urine. ⋯ Detection of potential gram-positive pathogens is more difficult. A scheme is proposed that allows reliable, inexpensive surveillance in all pregnant patients. Hopefully, this algorithm will rekindle the obstetrician's interest in urine screening.
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Quantitative criteria distinguish bacterial infection (or colonization) of the urine from contamination. These criteria depend on the fact that the density of bacteria in infected urine is usually several orders of magnitude higher than the density of bacteria in contaminated urine. Most research on quantitative definitions of infection has concerned Gram-negative rod infections in women. ⋯ For acute dysuria and frequency, recent evidence supports the use of a colony count of 1 X 10(2) cfu/ml bacteria as the most useful criterion. For the diagnosis of catheter-associated urinary tract infection, the criterion of 1 X 10(5) cfu/ml has been used most commonly, although a lower threshold may be appropriate. Additional investigation is required to determine the most appropriate quantitative definition of infection in this and several other circumstances.
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The authors present the results of a bacteriological urine analysis of 1774 pregnant women controlled in the Gynecological Dispensary Pesćenica in Zagreb. In 2824 examined urine specimens sterile urinocultures were found in 67.6% and bacteriuria in 32.4%. Significant findings of bacteriuria were recorded in 10.5% and insignificant ones in 21.9% of the specimens. ⋯ Urine specimens were taken by the dip slide method. A rather high percentage of significant asymptomatic bacteriurias (10.5%) suggests the early detection and therapy in urinary infections as the best prevention of pyelonephritis gravidarum and gestosis. A routine bacteriological urine analysis in pregnant women should be one of the factors included in prenatal care.