Risk factors:

same as MI:

HTN, DM, hyperlipidemia, and tobacco smoking

Etiology

1. blockage/ infarct 85%
2. bleeding 15%

Mixed parenchymal and subarachnoid hemorrhage can be seen with bleeding from AV malformations.

Multiple tiny hemorrhages of the putamen are intraparenchymal hemorrhages associated with severe hypertension.

Anatomical lesions in stroke

Lacunar infarcts (25% of ischemic strokes) occur due to the occlusion of a single, deep penetrating artery in the brain

HTN, Diabetes, hyperlipidemia, and smoking are major risk factors.

Underlying pathology = combination of microatheroma and lipohyalinosis

most common site is the posterior limb of the internal capsule

The most common (30%) site of hypertensive hemorrhages is the putamen.

The internal capsule that lies adjacent to the putamen is almost always involved, leading to contralateral dense hemiparesis

Thalamic stroke (Dejerine-Roussy syndrome)