• Shiqiu Yu and Peiying Li.
• Department of Anesthesiology, Renji Hospital, School of Medicine Shanghai Jiaotong University, Shanghai, China.
• Curr Opin Anaesthesiol. 2020 Oct 1; 33 (5): 651-654.

Purpose Of ReviewWith the aging of the population, there are increasing number of aged patients who require surgical interventions. Perioperative covert stroke is emerging as an important health threat and social burden that could affect patients' long-term neurological outcomes.Recent FindingsRecent findings of the association between perioperative covert stroke with long-term cognitive declines of surgical patients highlighted the significance of the silent cognitive function killer-perioperative covert stroke. Considering the devastating long-term consequence of the asymptomatic covert stroke, early diagnosis and prevention are turning out as crucial problems to tackle. The evolving brain imaging techniques, such as multimodel MRI sequences are not only able to detect early, small and subtle injuries of the acute ischemic lesions, but also quite advantageous in capturing the preexisting brain vascular diseases that are considered as important risk factors of covert stroke. However, effective predictive markers are still lacking to identify high risk patients for perioperative covert stroke, rendering an unmet need of investigations in this regard.SummaryThe present review will summarize recent findings in perioperative covert stroke and highlight future perspectives of its early diagnosis and the impact of postoperative cognitive impairments.

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