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Relationship between 17 tortuous VA loops and safety classification
| Classification* | C3 | C3/4 | C4 | C4/5 | C5 | C5/6 | C6 | C6/7 | C7 | Total |
|---|---|---|---|---|---|---|---|---|---|---|
| Safe (>2 mm) | 3 | 2 | 2 | 1 | 3 | 4 | 5 | 2 | 3 | 25 |
| Needing attention (2 mm ≥) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Unsafe (0 mm ≥) | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 5 |
Number of VAs.
