Table 1 Baseline characteristics
Baseline characteristics | Placebo N= 25 | Heparin N= 25 |
|---|---|---|
Age in years, mean ± SD | 55.5 ± 17.0 | 56.0 ± 16.5 |
Males, number (percentage) | 14 (56) | 18 (72) |
APACHE II score, mean ± SD | 19.4 ± 7.2 | 20.2 ± 6.1 |
Respiratory failurea, number (percentage) | 17 (68) | 14 (56) |
Acute lung injury, number (percentage) | 4 (16) | 4 (16) |
Aspiration, number (percentage) | 2 (8) | 2 (8) |
Vasopressor use, number (percentage) | 16 (64) | 13 (52) |
APTT, seconds | 41.1 | 38.0 |
Primary diagnosis, number (percentage) | ||
   Community-acquired pneumonia | 9 (36) | 7 (28) |
   Hospital-acquired pneumonia | 3 (12) | 2 (8) |
   H1N1 influenza | 1 (4) | 2 (8) |
   Chronic obstructive airway disease | 1 (4) | 1 (4) |
   Post cardiac arrest | 1 (4) | 2 (8) |
   Cardiac failure | 2 (8) | 1 (4) |
   Meningitis | 1 (4) | 0 |
   Uncontrolled seizures | 0 | 1 (4) |
   Subarachnoid hemorrhage | 1 (4) | 1 (4) |
   Cardiac surgery | 3 (12) | 4 (16) |
   Thymectomy | 0 | 1 (4) |
   perforated duodenal ulcer | 1 (4) | 0 |
   Cervical fracture | 0 | 1 (4) |
   Drug intoxication | 2 (8) | 2 (8) |
Admission source, number (percentage) | ||
   Emergency department | 13 (52) | 9 (36) |
   Operation theater | 4 (16) | 5 (20) |
   Hospital ward | 6 (24) | 8 (32) |
   Other hospital | 2 (8) | 3 (12) |