Table 2.
Infant Characteristics at Dynamic CT and Malacia Findings
| PMA at Dynamic CT in Weeksa | 44 (41 – 48) |
| Chronological age at Dynamic CT in Daysa | 133 (108 – 159) |
| Indication for Dynamic CTb | |
| Multiple failed extubations | 28 (40%) |
| Assess Central Airway | 21 (30%) |
| Elevated PEEP | 19 (27%) |
| Inability to wean positive pressure | 18 (26%) |
| Persistent Hypercarbia/Increased WOB | 9 (13%) |
| Desaturation/Bradycardia (BPD) Spells | 4 (6%) |
| Respiratory Support at Dynamic CT | |
| Endotracheal Ventilation | 47 (67%) |
| Tracheostomy Ventilation | 2 (3%) |
| NIPPV or NIV NAVA | 3 (4%) |
| NC > 2 L or CPAP | 10 (14%) |
| NC ≤ 2 L | 8 (12%) |
| Dynamic CT findings | |
| None | 31 (44%) |
| Combined TBM | 27 (39%) |
| Isolated Tracheomalacia | 7 (10%) |
| Isolated Bronchomalacia | 3 (4%) |
| Fixed Narrowing | 2 (3%) |
| Dynamic CT Severity of TBM | |
| Tracheomalacia (N = 34) | |
| Mild | 26 (76%) |
| Moderate | 6 (18%) |
| Severe | 2 (6%) |
| Bronchomalacia (N = 30) | |
| Mild | 16 (53%) |
| Moderate | 12 (40%) |
| Severe | 2 (7%) |
Data is presented as N (%) with total N = 70 unless otherwise specified
a
Data is presented as median (interquartile range 25th – 75th)
b
39/70 (56%) had more than 1 indication for dynamic CT
PMA (post menstrual age), PEEP (positive end expiratory pressure), NIPPV (nasal intermittent positive pressure ventilation), NIV NAVA (Non invasive neurally adjusted ventilatory assist), CPAP (continuous positive airway pressure), NC (nasal cannula)