Table 3 Pathogenic bacterial characteristics of elderly bedridden patients with hip fracture and lower respiratory tract infection

Sputum specimen delivery rate

74 (73.27%)

21 (45.65%)

22 (95.65%)

31 (96.88%)

< 0.001

Number of positive sputum culture cases, N = 74

67 (90.54%)

21 (100%)

18 (81.81%)

28 (90.32%)

0.456

 Number of bacterial positive cases

62 (83.78%)

17 (81.0%)

17 (77.3%)

28 (90.3%)

0.374

 Number of fungal positive cases

50 (67.57%)

10 (47.6%)

14 (63.64%)

26 (83.87%)

0.022

 Bacterial species (> 2 species)

24 (32.43%)

10 (47.6%)

7 (31.82%)

7 (22.58%)

0.166

Bacteria combined with fungi

49 (66.22%)

9 (42.86%)

14 (63.64%)

26 (83.87%)

0.009

 Number of G⁻ bacilli cases, N = 67

54 (80%)

19 (90%)

14 (80%)

21 (76%)

0.813

  Klebsiella pneumonia strains

17 (25.37%)

2 (9.52%)

8 (44.44%)

7 (25%)

0.042

   Drug-resistant bacteria

1

0

1

0

-

  Other enterobacteriaceae strains

17 (25.37%)

6 (28.57%)

4 (22.22%)

7 (25%)

0.939

   Drug-resistant bacteria

2

1

0

1

-

  Pseudomonas aeruginosa strains

12 (17.91%)

1 (4.76%)

2 (11.11%)

9 (32.14%)

0.045

   Drug-resistant bacteria

3

1

1

1

-

  Stenotrophomonas maltophilia strains

9 (13.43%)

2 (9.52%)

1 (5.56%)

6 (21.43%)

0.319

   Drug-resistant bacteria

2

0

0

2

-

  Acinetobacter baumannii strains

7 (10.45%)

2 (9.52%)

3 (16.67%)

2 (7.14%)

0.536

   Drug-resistant bacteria

3

1

1

1

-

  Other Acinetobacter

2 (2.99%)

1 (4.76%)

1 (5.56%)

0 (0)

0.506

Number of G⁺ coccus cases, N = 67

15 (22.39%)

6 (28.57%)

5 (27.78%)

4 (14.29%)

0.404

 Staphylococcus aureus strains

4 (5.94%)

1 (4.76%)

2 (11.11%)

1 (3.57%)

0.675

  Drug-resistant bacteria

3

0

2

1

-

 Staphylococcus haemolyticus strains

5 (7.46%)

2 (9.52%)

1 (5.56%)

2 (7.14%)

1.000

  Drug-resistant bacteria

1

0

1

0

-

 Staphylococcus epidermidis strains

3 (2.97%)

3 (6.52%)

0 (0)

0 (0)

0.318

  Drug-resistant bacteria

1

1

0

0

-

 Other strains

3 (4.48%)

0 (0)

2 (11.11%)

1 (3.57%)

0.349

  Drug-resistant bacteria

2

0

1

1

-

Number of G⁻ coccus (Moraxella catarrhalis) cases, N = 67

2 (2.99%)

0 (0%)

2 (11.1%)

0 (0)

0.069

Number of enzyme-resistant bacteria

16 (23.88%)

6 (28.57%)

3 (16.67%)

7 (25%)

0.789

 Number of fungal cases, N = 67

50 (74.63%)

11 (52.4%)

17 (94.4%)

22 (78.6%)

0.009

  Candida albicans strains

35 (52.24%)

11 (52.4%)

12 (66.7%)

12 (42.9%)

0.288

  Candida glabrata strains

11 (16.42%)

2 (9.5%)

3 (16.7%)

6 (21.4%)

0.645

  Candida tropicalis strains

8 (11.92%)

0 (0)

2 (11.11%)

6 (21.43%)

0.049

  Candida krusei strains

6 (8.96%)

0 (0)

5 (27.8%)

1 (3.6%)

0.005

  Candida rotundifolia strains

1 (1.49%)

0 (0)

1 (5.6%)

0 (0)

0.269

  Aspergillus fumigates strains

1 (1.49%)

0 (0)

0 (0)

1 (3.6%)

1.000

 Number of enzyme-resistant fungi

2 (2.99%)

0 (0)

2 (7.14%)

-