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Table 2 Percentage of isolation of different pathogens by quantitative and semi-quantitative ETSA cultures and by both methods

From: Evaluation of semi-quantitative compared to quantitative cultures of tracheal aspirates for the yield of culturable respiratory pathogens – a cross-sectional study

Organism Isolated

By Quantitative Method

n (%)

By Semi-Quantitative Method

n (%)

By Both Method

n (%)

Acinetobacter species

22 (23.2)

23 (23.7)

22 (23.7)

Klebsiella pneumoniae

18 (19.0)

20 (21.0)

18 (19.4)

Pseudomonas aeruginosa

18 (19.0)

18 (18.6)

17 (18.3)

Staphylococcus aureus

18 (19.0)

17 (17.5)

17 (18.3)

Escherichia coli

7 (7.4)

7 (7.2)

7 (7.5)

Stenotrophomonas maltophilia

5 (5.3)

5 (5.2)

5 (5.4)

Serratia species

1 (1.1)

1 (1.0)

1 (1.1)

Streptococcus pneumoniae

2 (2.1)

2 (2.1)

2 (2.2)

Haemophilus influenzae

1 (1.1)

1 (1.0)

1 (1.1)

Molds

3 (3.2)

3 (3.1)

3 (3.2)

Total organisms isolated

95

97

93