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Fig. 2 | BMC Microbiology

Fig. 2

From: A prospective study on the pathogenesis of catheter-associated bacteriuria in critically ill patients

Fig. 2

Origin of catheter-associated bacteriuria. Black line: Threshold of detection of 102 CFU/mL that defines catheter-associated bacteriuria. Black bar: Bladder urine; grey bar: outer surface of the urinary catheter near the urinary meatus; hatched bar: urine from the collector bag. Figures 2a, b and c give an example of the dynamics of the occurrence of CA-bacteriuria of each group (a endoluminal, b early exoluminal, c late exoluminal) which reflects the dynamics in the whole group. CA-bacteriuria was defined as a number of microorganisms higher than or equal to 102 CFU/mL in at least one bladder urine sample. The origin of CA-bacteriuria was defined by comparing the dynamics of the occurrence of microorganisms in bladder urine, collector bag urine and urinary catheter swabs. a Endoluminal catheter-associated bacteriuria. Identification of microorganisms, first in collector bag urine and then in bladder urine. Morganella morganii in patient 76, first in collector bag urine on day 2 and then in bladder urine on day 12. The molecular comparison is given in Additional file 2 (See Supplementary Figures 14 and 16, Additional File 2). b Early exoluminal catheter-associated bacteriuria. Identification of microorganisms on the first day of catheterization in bladder urine with or without identification in urine from collector bags. Klebsiella pneumoniae in patient 22 on the first day of catheterization in bladder urine. It was also detected from day 1 in the collector bag and on the outer surface of the urinary catheter near the urinary meatus. The molecular comparison is given in Additional file 2 (See Supplementary Figure 17, Additional File 2). c. Late exoluminal catheter-associated bacteriuria. Identification of microorganisms after the first day of catheterization in bladder urine without a preliminary identification in urine from collector bags. Morganella morganii in patient 56 in bladder urine and collector bag urine on day 3. It was detected from day 1 on the outer surface of the urinary catheter near the urinary meatus. The molecular comparison is given in Additional file 2 (See Supplementary Figures 14 and 15, Additional File 2)

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