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Table 4 Microbiological culture results of PSB and BALF samples obtained from patients in the HS, stable COPD and AECOPD groups

From: Quantitative analysis of pathogens in the lower respiratory tract of patients with chronic obstructive pulmonary disease

n (%)

HS

Stable COPD patients

AECOPD patients

(n = 33)

(n = 34)

(n = 32)

PSB

BALF

PSB

BALF

PSB

BALF

No isolated or Normal flora

29 (87.9)

29 (87.9)

20 (58.8)

15 (44.1)

9 (28.1)

8 (25.0)

Staphylococcus aureus

1 (3.0)

1 (3.0)

2 (5.9)

4 (11.8)

3 (9.4)

3 (9.4)

Klebsiella pneumoniae

1 (3.0)

1 (3.0)

1 (2.9)

3 (8.8)

4 (12.5)

4 (12.5)

Streptococcus pneumoniae

2 (6.0)

2 (6.0)

4 (11.8)

5 (14.7)

3 (9.4)

4 (12.5)

Pseudomonos aeruginosa

0

0

2 (5.9)

2 (2.9)

4 (12.5)

5 (15.6)

Haemophilus influenzeae

0

0

2 (5.9)

3 (8.8)

6 (18.8)

5 (15.6)

Moraxella catarrhalis

0

0

1 (2.9)

2 (2.9)

2 (6.3)

2 (6.3)

Others a

0

0

1 (2.9)

2 (2.9)

1 (3.1)

1 (3.1)

  1. aOther isolated bacteria including Acinetobacter baumanii, Escherichia coli, and Streptococcus hemolyticus. HS, Healthy subjects