Hemorrhagic infarction

The authors analyzed incidence of hemorrhagic infarction (HI) in 274 patients with ischemic stroke in whom CT scan was performed twice, at the beginning and three or more days after stroke, or was performed only once, ten or 14 days after stroke onset and was still bland. HI was found altogether in 55 (19.0%) patients. HI was statistically significant (x(2)=5,2), more often in patients with cerebral embolism (29,1%) than in patients with cerebral thrombosis (10.5%). HI occurred significantly more often in patients with assumed embolic mechanism of stroke (0,01-0,05) than in patients with thrombotic stroke. Arterial hypertension and cardial status were analyzed and evaluated in relation with appearance of HI, as well as in connection with anticoagulant therapy, but statistically significant influence of these factors upon development of HI was found only for cardiac diseases. Size of infarcts was greater in patients with HI (71.2%), while in patients with BI small infarcts were more often (59.8%). Patients with HI were older than patients with BI, but that difference was not statistically significant. Temporal dispersion of HI occurence showed low incidence of HI in first two days, or after ten days of stroke onset. In majority of patients HI occurred between third and fifth days (74.4%) after stroke onset. Analyzing the outcome of patients, significant difference between patients with hemorrhagic or bland infarction was not found.