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Table 3 Comparison of the groups given monotherapy and dual therapy

From: Initial use of one or two antibiotics for critically ill patients with community-acquired pneumonia: impact on survival and bacterial resistance

 

Monotherapy (β-lactam)

Dual therapy

Parameters

Total population (n = 471)

Total population (n = 394)

β-lactam + Macrolide (n = 164)

β-lactam + Fluoroquino-lone (n = 230)

Variables at admission

    

Male, n (%)

301 (63.9)

274 (69.5)

110 (67.1)

164 (71.3)

Age in years, median [IQR]

60 [45; 75]

64 [48; 77]

64 [49; 79]

64 [47; 76]

Scores, n (%)

    

SAPSII*£

47 [34; 60]

39.5 [28; 57]

37 [28.5; 51]

43[28; 63]

SOFA score£

6 [4; 9]

6 [3; 9]

5 [3; 8]

7 [4; 10]

LOD score*£

5 [3; 7]

4 [2; 7]

3 [2; 5.5]

4 [2; 8]

Coma Glasgow Scale*£

8 [4; 15]

15 [8.5; 15]

15 [11;15]

14 [7; 15]

McCabe, n (%)

    

1

326 (69.2)

284 (72.4)

119 (73.5)

165 (71.7)

2

124 (26.3)

98 (25.0)

40 (24.7)

58 (25.2)

3

21 (4.5)

10 (2.6)

3 (1.9)

7 (3.0)

CURB-65,* n (%)

    

0

3 (0.6)

7 (1.8)

1 (0.6)

6 (2.6)

1

20 (4.2)

38 (9.6)

15 (9.1)

23 (10.0)

2

88 (18.7)

71 (18.0)

34 (20.7)

37 (16.1)

3

157 (33.3)

107 (27.2)

42 (25.6)

65 (28.3)

4

122 (25.9)

107 (27.2)

46 (28.0)

61 (26.5)

5

81 (17.2)

64 (16.2)

26 (15.9)

38 (16.5)

Co-morbidities (Knaus definitions), n (%)

Chronic hepatic failure£

23 (4.9)

17 (4.3)

3 (1.8)

14 (6.1)

Chronic heart failure

47 (10.0)

48 (12.2)

25 (15.2)

23 (10.0)

Chronic respiratory failure*£

65 (13.8)

86 (21.8)

52 (31.7)

34 (14.8)

Chronic renal failure

9 (1.9)

7 (1.8)

3 (1.8)

4 (1.7)

Diabetes

58 (12.3)

48 (12.2)

16 (9.8)

32 (13.9)

≥One co-morbidity*

153 (32.5)

161 (40.9)

75 (45.7)

86 (37.4)

Smokers (>20 pack-years), n (%)

114 (31.1)

97 (28.1)

41 (29.3)

56 (27.3)

Alcohol (>80 g/d)* n (%)

101 (27.6)

73 (21.2)

31 (22.1)

42 (20.5)

Sepsis, n (%)

458 (97.2)

383 (97.2)

158 (96.3)

225 (97.8)

Severe sepsis, n (%) *

395 (83.9)

360 (91.4)

146 (89)

214 (93.0)

Septic shock, n (%)*

146 (31.0)

152(38.6)

55 (33.5)

97(42.2)

Treatments, n (%) unless otherwise stated

Invasive ventilation*£

340 (72.2)

207 (52.5)

73 (44.5

134 (58.3)

Noninvasive ventilation*

40 (8.5)

58 (14.7)

27 (16.5)

31 (13.5)

Inotropes or vasoactive agents*£

189 (40.1)

191 (48.5)

67 (40.9)

124 (53.9)

Corticosteroids*

69 (14.6)

96 (24.4)

40 (24.4)

56 (24.3)

Hemodialysis/Hemofil-tration

23 (4.9)

31 (7.9)

11 (637)

20 (8.7)

Antibiotic therapy duration in days, median [IQR]*

7 [4; 13]

8 [4; 14]

7 [4; 13]

8 [4; 15]

Organisms, n (%)

    

Streptococcus pneumoniae* £

125 (26.5)

69 (17.5)

42 (25.6)

27 (11.7)

Staphylococcus aureus* £

65 (13.8)

25 (6.3)

5 (3.0)

20 (8.7)

Streptococcus spp.

22 (4.7)

9 (2.3)

2 (1.2)

7 (3.0)

Enterocococcus spp.

3 (0.6)

0 (0)

0 (0)

0 (0)

Hemophilus influenzae*

57 (12.1)

29 (7.4)

15 (9.1)

14 (6.1)

Klebsiella pneumoniae

16 (3.4)

8 (2.0)

3 (1.8)

5 (2.2)

Escherichia coli

23 (4.9)

10 (2.5)

2 (1.2)

8 (3.5)

Enterobacteriaceae spp.*

11 (2.3)

2 (0.5)

1 (0.6)

1 (0.4)

Serratia marescens

3 (0.6)

1 (0.3)

0 (0)

1 (0.4)

Proteus mirabilis

7 (1.5)

1 (0.3)

0 (0)

1 (0.4)

Pseudomonas aeruginosa

13 (2.8)

14 (3.6)

5 (3.0)

9 (3.9)

Legionella pneumophila*

1 (0.2)

9 (2.3)

5 (3.0)

4 (1.7)

Mycoplasma pneumoniae

0 (0)

0 (0)

0 (0)

0 (0)

Chlamydia pneumoniae

0 (0))

2 (0.5)

0 (0)

2 (0.9)

Mycobacterium tuberculosis £

3 (0.6)

6 (1.5)

5 (3.0)

1 (0.4)

Aspergillus fumigatus

0 (0)

3 (0.8)

2 (1.2)

1 (0.4)

Viruses*

6 (1.3)

15 (3.8)

7 (4.3)

8 (3.5)

Other

6 (1.3)

6 (1.5)

1 (06)

5 (2.2)

Multiple organisms*

62 (13.2)

22 (5.6)

8 (4.9)

14 (6.1)

None identified*

182 (38.6)

207 (52.5)

77 (47.0)

130 (56.5)

Bacteremia*

74 (15.7)

42 (10.7)

15 (9.1)

27 (11.7)

Acquisition of MDR pathogens or nosocomial pneumonia, n (%)

MDR bacteria

52 (11.0)

44 (11.2)

19 (11.6)

25 (10.9)

MRSA

12 (2.5)

12 (3.0)

5 (3.0)

7 (3)

Enterobacteriaceae ESBL

22 (4.7)

12 (3.0)

5 (3.0)

7 (3)

Nonfermentative GNB

25 (5.3)

25 (6.3)

14 (8.5)

11 (4.8)

Clostridium difficile

6 (1.3)

2 (0.5)

0 (0)

2 (0.9)

Nosocomial pneumonia

58 (12.3)

54 (13.7)

23 (14)

31 (13.5)

ICU stay in days, median [IQR]

6 [3; 15]

7 [3; 16]

7 [3.5; 15.5]

8 [3; 17]

Hospital stay in days, median [IQR]

15 [8; 33]

18 [10; 31]

17.5 [10.5; 35]

18 [9; 30]

Patients who died within 60 days, £ n (%)

123 (26.1)

107 (27.2)

35 (21.3)

72 (31.3)

  1. ESBL, extended-spectrum beta-lactamase; LOD, Logistic Organ Dysfunction Score; MDR, multidrug resistant; MRSA, methicillin-resistant Staphylococcus aureus; Nonfermentative GNB, nonfermentative Gram-negative bacilli (Pseudomonas spp., Acinetobacter baumannii, Stenotrophomonas maltophilia).
  2. *P <0.05 for monotherapy (n = 471) versus dual therapy (n = 394); £P <0.05 for β-lactam + macrolide (n = 164) vs. β-lactam + fluoroquinolone (n = 230).