Table 2.
Characteristic laboratory findings of patients with influenza pneumonia compared with those with influenza without pneumonia
| Influenza without pneumonia (n = 27) | Primary influenza pneumonia (n = 39) | Concomitant/secondary bacterial pneumonia (n = 15) | P‐value | |
|---|---|---|---|---|
| WBC (count/μl) | 5·892 ± 2·176a | 7·056 ± 3·586a,b | 9·750 ± 5·442b | 0.01 |
| Lymphopenia (<1000 cells/μl), no (%) | 14 (51·9) | 25 (64·1) | 8 (53·3) | 0.48 |
| Hemoglobin (g/dl) | 13·2 ± 1·1 | 12·7 ± 1·9 | 12·5 ± 1·9 | 0.53 |
| Platelet count, 103 cells/μl | 179 ± 36 | 206 ± 111 | 205 ± 61 | 0.27 |
| AST (IU/l) | 29 ± 21 | 51 ± 47 | 44 ± 32 | 0.14 |
| ALT (IU/l) | 36 ± 43 | 44 ± 44 | 35 ± 325 | 0.63 |
| Bilirubin, total (mg/dl) | 0·53 ± 0·35 | 0·54 ± 0·27 | 0·60 ± 0·42 | 0.79 |
| INR | 1·10 ± 0·09 | 1·11 ± 0·12 | 1·13 ± 0·13 | 0.79 |
| BUN (mg/dl) | 10·7 ± 3·3a | 14·2 ± 10·1a,b | 19·1 ± 13·9b | 0.04 |
| Creatinine (mg/dl) | 0·69 ± 0·15 | 0·91 ± 1·05 | 0·99 ± 0·48 | 0.55 |
| LDH (IU/l) | 365 ± 86a | 567 ± 181b | 502 ± 166b | <0.01 |
| CPK (IU/l) | 102 ± 124 | 247 ± 348 | 159 ± 133 | 0.13 |
| ESR (mm/hour) | 25·1 ± 13·4a | 52·5 ± 29·5b | 69·9 ± 28·2b | <0.01 |
| CRP (mg/l) | 26·5 ± 29·0a | 82·4 ± 65·6b | 183·5 ± 134·4c | <0.01 |
| Procalitonin (IU/l) | 0·07 ± 0·05a | 0·75 ± 1·66b | 5·32 ± 9·23c | <0.01 |
The same superscript letters indicate a non‐significant difference between groups based on Tukey’s multiple comparison test.
WBC, white blood cell; AST, aspartate aminotransferase; ALT, alanine aminotransferase; INR, international normalized ratio; BUN, blood urea nitrogen; LDH, lactate dehydrogenase; CPK, creatine phosphokinase; ESR, erythrocyte sedimentation rate; CRP, C‐reactive protein.