The patient has a stenosis of less than 50%, so we should maintain clinical treatment with aspirin and statin, in addition to repeating the doppler every 2 years.

The patient has a stenosis between 50-70% and we should submit this patient to urgent endovascular treatment, with stent implantation in the carotid territory.

The patient has a stenosis between 50-70% and, since he has no previous episodes of stroke, we will maintain clinical treatment with aspirin, statin, and annual ultrasound control.

The patient has a stenosis above 70% and therefore should undergo carotid endarterectomy as soon as possible.