Table 2. Causes of intubation in two groups .
| Cause of intubation | Fixed volume method | MLT | ||
| No. | % | No. | % | |
| Loss of consciousness | 39 | 81.3 | 5 | 9.1 |
| Respiratory failure | 7 | 14.6 | 0 | 0 |
| Seizure | 1 | 2.1 | 0 | 0 |
| Trauma | 1 | 2.1 | 0 | 0 |
| Embolism | 0 | 0 | 2 | 3.6 |
| Loss of consciousness | 0 | 0 | 10 | 18.0 |
| Stroke | 0 | 0 | 3 | 5.5 |
| Reduced oxygen saturation | 0 | 0 | 1 | 1.8 |
| Tachypnea | 0 | 0 | 2 | 3.6 |
| Acidosis | 0 | 0 | 2 | 3.6 |
| Toxication | 0 | 0 | 15 | 27.3 |
| Sepsis | 0 | 0 | 4 | 7.3 |
| COPD | 0 | 0 | 2 | 3.6 |
| Pneumonia | 0 | 0 | 4 | 7.3 |
| Shock | 0 | 0 | 1 | 1.8 |
| ARDS | 0 | 0 | 1 | 1.8 |
| SAH | 0 | 0 | 1 | 1.8 |
| ICH | 0 | 0 | 1 | 1.8 |
| Respiratory distress | 0 | 0 | 1 | 1.8 |
MLT: minimal leak Technique; COPD: chronic obstructive pulmonary disease; ARDS: acute respiratory distress syndrome; SAH: subarachnoid hemorrhage; ICH: intracranial hemorrhage.