Table 4.
Microbiological diagnosis
| Microbiological diagnosis, n [patients with a positive microbiological diagnosis] (%) | Early responders n = 332 | Later responders n = 253 | Patients without Halm-based assessment of TCS n = 1454 |
|---|---|---|---|
| Number of patients with a microbiological diagnosis |
87 (26.2) |
87 (34.4) |
408 (28.1) |
| Gram-positive cocci* |
40 (46.0) |
38 (43.7) |
208 (51.0) |
| Streptococcus pneumoniae |
32 (36.8) |
28 (32.2) |
168 (41.2) |
| Penicillin-resistant Streptococcus pneumoniae |
0 |
1 (1.1) |
1 (0.2) |
| Methicillin-resistant Staphylococcus aureus |
0 |
1 (1.1) |
11 (2.7) |
| Methicillin-susceptible Staphylococcus aureus |
9 (10.3) |
9 (10.3) |
33 (8.1) |
|
Legionella spp. |
4 (4.6) |
3 (3.4) |
13 (3.2) |
|
Mycoplasma pneumoniae |
4 (4.6) |
1 (1.1) |
13 (3.2) |
|
Chlamydophila pneumoniae |
0 |
2 (2.3) |
11 (2.7) |
| Gram-negative bacilli† |
15 (17.2) |
11 (12.6) |
81 (19.8) |
| Haemophilus influenzae |
7 (8.0) |
3 (3.4) |
23 (5.6) |
| Haemophilus parainfluenzae |
3 (3.4) |
1 (1.1) |
2 (0.5) |
| Moraxella catarrhalis |
2 (2.3) |
0 |
7 (1.7) |
| Pseudomonas aeruginosa |
4 (4.6) |
8 (9.2) |
29 (7.1) |
| Escherichia coli |
4 (4.6) |
3 (1.4) |
29 (7.1) |
| Klebsiella spp. |
2 (2.3) |
0 |
17 (4.2) |
| Aspiration pneumonia§ |
1 (1.1) |
4 (4.6) |
12 (2.9) |
| Other microorganisms |
19 (21.8) |
32 (36.8) |
82 (20.1) |
| Unknown (not identified) | 248 (74.7) | 167 (66.0) | 1060 (72.9) |
*Includes other Streptococcus spp. and Staphylococcus spp.
†Includes Morganella morganii, Pasteurella multocida, Proteus mirabilis and Serratia marcescens, Acinetobacter spp. and Hafnia alvei.
§Commonly applied to situations when a patient with risk factors for aspiration presents with pneumonia.