TABLE 2

Distribution of microorganisms detected by sonication fluid culture and tissue culturea

Microorganism(s)Sonication fluid culture (n = 150)Tissue culture (n = 79)P valueb
No.%No.%
Staphylococcus aureus42283341.80.034
CoNSc3422.71417.70.38
Pseudomonas aeruginosa15101113.90.28
Enterobacter sp.12833.80.19
Klebsiella pneumoniae85.356.30.09
Serratia marcescens74.756.30.59
Enterococcus sp.53.322.50.73
Streptococcus sp.42.7000.14
Corynebacterium sp.42.711.30.49
Bacillus sp.42.733.80.21
Escherichia coli32000.21
Acinetobacter baumannii3211.30.21
Chryseobacterium indologenes21.3000.3
Proteuss sp.21.3000.3
Candida sp.21.3000.3
Citrobacter sp.10.7000.46
Providencia sp.10.711.30.64
Burkholderia cepacia10.7000.46
Stenotrophomonas maltophilia10.7000.46
Gram-positive species856549620.43
Gram-negative species523426320.78
Polymicrobial flora2715105.50.001
  • a Description of agents identified among 180 subjects in the study.

  • b The microorganisms were described as frequencies and percentages and were compared using the Pearson chi-square test or Fisher's exact test, as appropriate. All tests were two sided, and P values of <0.05 were considered statistically significant.

  • c CoNS, coagulase-negative staphylococci.