Prevention

Use patch angioplasty ^a  

Why?

• Patients who have patch angioplasty compared with primary closure are less likely to have a stroke. There is no clear effect on mortality. ^a
• Polytetrafluoroethylene patching is not clearly better than vein patching at preventing stroke. ^d

Patch angioplasty reduces early stroke

Patient	Treatment	Comparison	Outcome	CER	OR (95% CI)	NNT (95% CI)
carotid endarterectomy a	patch	no patch	stroke at 30 days	4.2%	0.38 (0.15 to 0.97)	39 (28 to 820)