infarction
(in-fark'shŏn 
)
[ infarct ]
Death of tissue caused by deprivation of its blood supply.
atherothrombotic brain i.Thrombotic stroke.
SEE: cerebral infarct .
lacunar i.A small stroke deep within the brain (as in the internal capsule, basal ganglia, thalamus, or pons) caused by damage to or a blockage of a tiny penetrating artery. Lacunar infarctions are associated with a kind of vascular damage caused by lipohyalinosis (chronic high blood pressure). They may be asymptomatic, showing up only on brain imaging, or may produce pure motor, pure sensory, ataxic, or mixed motor and sensory symptoms.SYN: lacunar stroke .
malignant cerebral artery i.A massive stroke involving the middle cerebral artery, in which swelling of the brain leads either to herniation and death or to additional strokes in other arteries.
ABBR: MI
SEE: myocardial infarction.
placental i.A localized necrotic area caused by abruption.
SEE: abruptio placentae.
pulmonary i.An infarction in the lung usually resulting from pulmonary embolism that may appear on x-rays as a wedge-shaped infiltrate near the pleura. Immediate therapy includes control of pain, oxygen administered continuously by mask, intravenous heparin (unless the patient has a known blood clotting defect), and treatment of shock or dysrhythmias, if present.