Table 1.
Patient characteristics
| Infant no. | Diagnosis | GA (weeks) | Weight (kg) | Age (h) | ETT size (mm) | Cat size (Fr) | Areaa (mm2) | CDP (cmH2O) | Amplitude (cmH2O) | FiO2 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | RDS | 25.3 | 0.83 | 14 | 3.0 | 6 | 4.0 | 14 | 25 | 0.25 |
| 2 | RDS | 27.3 | 0.98 | 3 | 3.0 | 6 | 4.0 | 14 | 18 | 0.21 |
| 3 | RDS + PPHN | 29.3 | 1.37 | 45 | 3.5 | 7 | 5.3 | 12 | 24 | 0.80 |
| 4 | RDS | 31.1 | 1.44 | 48 | 3.0 | 6 | 4.0 | 9 | 19 | 0.22 |
| 5 | RDS | 33.6 | 2.12 | 71 | 3.0 | 6 | 4.0 | 8 | 24 | 0.25 |
| 6 | RDS | 28.3 | 1.30 | 9 | 3.0 | 6 | 4.0 | 18 | 29 | 0.24 |
| 7 | RDS | 31.4 | 1.39 | 9 | 3.5 | 7 | 5.3 | 18 | 22 | 0.30 |
| 8 | RDS + PPHN | 31.4 | 1.83 | 33 | 3.5 | 7 | 5.3 | 14 | 28 | 0.55 |
| 9 | RDS | 25.6 | 0.79 | 10 | 2.5 | 5 | 2.7 | 16 | 22 | 0.30 |
| 10 | RDS + PPHN | 31.0 | 1.60 | 36 | 3.0 | 6 | 4.0 | 13 | 21 | 0.60 |
| 11 | RDS | 28.4 | 1.12 | 7 | 3.0 | 6 | 4.0 | 18 | 25 | 0.35 |
| Median | 29.3 | 1.37 | 14 | 3.0 | 6 | 4.2 | 14 | 24 | 0.30 |
GA Gestational age, ETT endotracheal tube, Cat suction catheter, CDP continuous distending pressure, FiO 2 fraction of inspired oxygen, RDS respiratory distress syndrome, PPHN persistent pulmonary hypertensions of the newborn
aUnoccluded cross-sectional area of the ETT during suctioning