vascular

TASC II Classification of Aorto-iliac and Femoropopliteal Lesions

Trans-Atlantic Inter-Society Consensus II anatomic classification of peripheral arterial lesions (Norgren 2007). Guides endovascular vs open surgical revascularisation.

Score interpretation

Class A — Endovascular preferred 1

→ Angioplasty ± stenting first-line. Excellent patency. Best medical therapy + supervised exercise pre- and post-procedure.

Class B — Endovascular favoured 2

→ Endovascular usually preferred but complexity may require open repair in selected cases. Surveillance duplex 6–12 monthly.

Class C — Open or complex endovascular 3

→ Decision based on patient comorbidities, surgeon expertise, and centre experience. Open bypass favoured in fit patients with critical limb ischaemia.

Class D — Open surgery preferred 4

→ Open surgical revascularisation (aorto-bifemoral bypass, femoro-popliteal bypass) preferred in fit patients. Endovascular as alternative if high surgical risk; consider hybrid approach. Optimise medical therapy regardless.

Interpretation bands for the TASC II. Apply clinical judgement and local guidance.

References

Curated clinical cross-links plus same-class fallbacks.

Pathways

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.

Score interpretation

References

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