#
Lacunar_stroke:
#Etymology:
from Latin lacūna a defect, hole or gap.
#Pathogenesis :
lipohyalinosis a small cerebral vascular disease involving commonly deep penetrating arteries (e.g. Leniculostriae artery)
Shear and tear injury to blood vessels cause :
1- hyaline deposition.
2- fibrinoid necrosis.
3- atheroma formation.
Leading to narrowing of the leumen and small infarction (lacunar)
#
Risk_factors:
1-
Hypertension: commonly cause ischemic stroke rather than hemorrhagic.
2 - Diabetes mellitus
3-Hyperlipidemia.
#
Clinical:
5 clinical syndromes :1- Pure
motor hemiparesis (the #commonest).
2-Pure sensory stroke
3-Sensimotor stroke
5- Ataxic hemiparesis.
5- Dysarthria-clummsy hand.
#Notes:
Lacunar stroke greatest risk factor is HTN.
Lacunar stroke is part of ischemic CVA.
Hypertension also predisposes to hemorrhagic CVA although less common than ischemic CVA.
#
Reference :
Uworld neurology block.
https://emedicine.medscape.com/article/1163029-overview
