Table 4.
Diagnostic findings at presentation in patients with 2009 pandemic H1N1 infection
| All patients | Patients <18 years old | Patients ≥18 years old | |
|---|---|---|---|
| Selected laboratory abnormalities | |||
| Laboratory results available | 395/540 (73.1) | 100/225 (44.4) | 295/315 (93.7) |
| Leukocyte count | |||
| <4,000/μl | 33/391 (8.4) | 11/99 (11.1) | 22/292 (7.5) |
| 4,000–10,000/μl | 271/391 (69.3) | 62/99 (62.6) | 209/292 (77.1) |
| >10,000/μl | 78/391 (22.3) | 26/99 (25.3) | 81/292 (20.9) |
| Platelet count | |||
| <150,000/mm3 | 57/390 (14.6) | 15/98 (15.3) | 42/292 (14.4) |
| Haemoglobin <12 g/dl | 86/391 (22.0) | 26/97 (26.8) | 60/294 (20.4) |
| Lymphocyte count | |||
|
<3,000/mm3 in children <1,500/mm3 in adults |
71/173 (41.0) | 42/77 (54.5) | 29/96 (30.2) |
| GOT >40 U/l | 84/287 (29.3) | 14/30 (46.7) | 70/257 (27.2) |
| GPT >45 U/l | 63/285 (22.1) | 4/29 (10.2) | 59/256 (23.0) |
| Creatinine >1.2 mg/dl | 0/234 (0.0) | 0/33 (0.0) | 0/201 (0.0) |
| Creatine kinase >200 U/l | 54/196 (27.6) | 3/9 (33.3) | 51/187 (27.3) |
| CRP >1 mg/dl | 275/384 (71.6) | 57/94 (60.6) | 218/290 (75.2) |
| CRP mg/dl (mean ± SD) | 7.92 ± 10.2, n = 275 | 8.14 ± 15.1, n = 57 | 7.86 ± 8.5, n = 218 |
| Radiographic findings | |||
| Chest X-ray available | 285/540 (52.8) | 43/225 (19.1) | 242/315 (76.8) |
| Without pathological findings | 84/285 (29.5) | 8/43 (18.6) | 76/242 (31.4) |
| Interstitial pathology | 31/285 (10.9) | 9/43 (20.9) | 22/242 (9.1) |
| Lobular pathology | 63/285 (22.1) | 11/43 (25.6) | 52/242 (21.5) |
Data are presented as no./total no. (%)
GOT glutamate oxaloacetate transaminase, GPT glutamic pyruvic transaminase, CRP C-reactive protein