TABLE 1.
Grading systems.
| ISHLT’s proposed grading system | Our Study’s adapted grading system | ||
| Ischemia andNecrosis (I) | Ischemia and Necrosis (I) | ||
| Location | A. Perianastomotic - Within 1 cm of anastomosis | Location | A Perianastomotic - Within 1 cm of anastomosis |
| B. Extending >1 cm from anastomosis to major airways (bronchus intermedium and distal left main-stem) | B. Extending >1 cm from anastomosis to major airways (bronchus intermedium and distal left main-stem) | ||
| C. Extending >1 cm from anastomosis into lobar or segmental airways | C. Extending >1 cm from anastomosis into lobar and segmental airways | ||
| Extent | a. < 50% circumferential ischemia | Extent | 1. < 50% circumferential ischemia or necrosis |
| b. > 50%–100% circumferential ischemia | 2. > 50%–100% circumferential ischemia or necrosis | ||
| c. < 50% circumferential necrosis | Dehiscence (D) | Presence of any | |
| d. > 50%–100% circumferential necrosis | Stenosis (S) | ||
| Dehiscence (D) | Extent | <50% stenosis | |
| Location | a. Cartilaginous | >50% stenosis | |
| c. Membranous | |||
| c. Both | |||
| Extent | a. 0%–25% of circumference | ||
| b. > 25%–50% of circumference | |||
| c. > 50%–75% of circumference | |||
| d. > 75% of circumference | |||
| Stenosis (S) | |||
| Location | a. Anastomotic | ||
| b. Anastomotic plus lobar/segmental | |||
| c. Lobar/segmental only | |||
| Extent | a. 0%–25% reduction in cross-sectional area | ||
| b. > 25%–50% reduction in cross-sectional area | |||
| c. > 50% but <100% reduction in the cross-sectional area | |||
| d. 100% obstruction | |||
| Malacia (M) | |||
| Location | a. Perianastomotic - within 1 cm of anastomosis | ||
| b. Diffuse - involving anastomosis and extending beyond 1 cm | |||