Diagnosis
12
Figure 8. Flow chart illustrating application of GLASS to
stage infrainguinal disease pattern in CLTI
Patient with CLTI, candidate for revascularization
Obtain high-quality angiographic imaging including ankle and foot
Define the TAP
Grade the FP segment (Fig 6)
Grade the IP segment (Fig 7)
Look up the overall GLASS stage (Table 4)
Define the preferred revascularization strategy by integrating patient risk,
limb severity (WIfI) and anatomy (GLASS) according to the PLAN concept
(Recommendation Section 6)
Table 4. Assignment of GLASS stage
Infrainguinal GLASS stage (I-III)
FP grade
4 III III III III III
3 II II II III III
2 I II II II III
1 I I II II III
0 NA I I II III
0 1 2 3 4
IP grade
