risk warning model of postoperative delirium and long-term cognitive dysfunction in elderly patients

Conditions: Postoperative Delirium; Postoperative Neurocognitive Disorder; Surgery

Summary: the incidence of postoperative delirium in elderly patients is high, which can lead to long-term postoperative neurocognitive disorders. its high risk factors are not yet clear. at present, there is a lack of early diagnosis and alarm technology for perioperative neurocognitive disorders, which can not achieve early intervention and effective treatment. by artificial intelligence and autonomously evolutionary neural network algorithm, relying on multi-source clinical big data, we explored the use of bayesian network to optimize the anesthesia decision-making system in enhanced recovery after surgery, and established risk prediction model for perioperative critical events. it is expected that this method will also help to establish a risk prediction model for postoperative delirium and long-term postoperative neurocognitive disorders. this project plans to collect the perioperative sensitive parameters of anesthesia machine, multi-parameter monitor, eeg monitor,fmri and his system, to explore the evolution process of data characteristics by feature fusion.we also plan to quickly screen key perioperative risk characteristics of postoperative delirium from massive clinical data through feature selection, to explore the high risk factors of long-term postoperative neurocognitive disorders developing from postoperative delirium. finally, with multi-center intelligent analysis，the risk prediction model of postoperative delirium and long-term postoperative neurocognitive disorders will be constructed.

this project intends to collect and identify clinical monitoring data of anesthesia machine, multi-parameter monitor and brain function monitor on the basis of the team's previous series of studies on cognitive function protection of elderly patients in perioperative period and the research on tracking and warning of critical illness events and decision support services based on artificial intelligence. his clinical data and classified and tracked fmri imaging data were integrated to form a large data set related to perioperative cognitive function of elderly patients. based on pncd clinical diagnostic information and fmri imaging diagnostic information, a brain adverse event prediction system capable of intelligent extraction of clinical key information and real-time early warning was established by using key technologies such as data quality control, real-time collection and identification of multi-source clinical monitoring data, and artificial intelligence adverse event prediction.

Eligibility criteria:
inclusion criteria: * patients ≥65 years of age who have undergone surgical anesthesia; sign informed consent exclusion criteria: * inability to complete cognitive function assessment; illiteracy, hearing impairment or visual impairment; he has a history of epilepsy, depression, schizophrenia, alzheimer's disease and other psychiatric and neurological diseases

Keywords: postoperative delirium; postoperative neurocognitive disorder; risk prediction model; artificial intelligence; evolutionary neural network