Table 2. Factors that influence outcome of Nd:YAG laser.
| Factors | Favorable | Unfavorable |
|---|---|---|
| Location | Tracheal, main bronchi | Lobar, segmental, upper lobe |
| Type of lesion | Endobronchial | Extrinsic |
| Appearance | Exophytic | Submucosal |
| Involvement | Localized | Extensive |
| Length of lesion | <4 cm | >4 cm |
| Distal lumen | Visible | Not visible |
| Duration of collapse | <4–6 weeks | >4–6 weeks |
| Clinical status hemodynamics | Stable | Unstable |
| Oxygen (FiO2) | <40% | >40% |
| Coagulation profile | Normal | Abnormal |
| Pulmonary vascular supply | Intact | Compromised |
Nd:YAG, Neodymium-Yttrium, Aluminum, Garnet; FiO2, fraction of inspired oxygen.