Abstract: The imaging features of cerebral infarction patients after cardiac surgery and related factors of cerebral infarction were discussed. 286 cases of cardiac surgery patients were selected as the study subjects. 34 cases of cerebral infarction occurred after operation. According to different surgical methods, the patients with cerebral infarction were divided into 11 cases of cardiopulmonary bypass group and 23 cases of non-extracorporeal circulation group. The imaging features of postoperative cerebral infarction were compared between the two groups, and the influencing factors of cerebral infarction after cardiac surgery were analyzed. The results showed that there was no significant difference in the incidence of perforation, watershed infarction, multiple infarction, and old infarction between the two groups (P>0.05). The incidence of cortical infarction in the extracorporeal circulation group was significantly lower than that in the non-extracorporeal circulation group. The incidence of large infarction and bilateral infarction in the extracorporeal circulation group was significantly higher than that in the non-extracorporeal circulation group, and the difference was statistically significant (P<0.05). Univariate analysis showed that gender, fasting blood glucose, TC, TG, LDL-C, Hcy, smoking, and drinking were not the influencing factors of cerebral infarction after cardiac surgery (P>0.05); age, education level, history of hypertension, diabetes as heart Influencing factors of cerebral infarction after surgery (P<0.05); multivariate binary logistic regression analysis, high age, low education, history of hypertension ≥ 10, diabetes was an independent influencing factor of cerebral infarction after cardiac surgery (P< 0.05). This article shows that extracorporeal circulation surgery is often a large area of infarction, bilateral infarction, heavier symptoms, non-extracorporeal circulation surgery is often cortical infarction, and both watershed infarction, more related to embolism and hypoperfusion. Cerebral infarction after cardiac surgery is closely related to high age, low level of education, history of hypertension ≥ 10, and diabetes. Early targeted prevention intervention may reduce the incidence of cerebral infarction.

Key words: cardiac surgery, cerebral infarction, imaging features, related factors