Risk Factors Investigation For Delirium In Elderly Patients After Orthopedic Surgery

OBJECTS:Postoperative delirium is one kind of serious acute mental disorder,which were based on the patients susceptible in the surgery andmultifactor’s across interactions. This was not only prolongedhospitalization, increased economic burden of patients, but also increasedthe rate and risk of complications, even on incidence and mortality, andmay even develop into permanent cognitive impairment. To master the riskfactors of postoperative delirium, and prevent appropriately is playing animportant role to reduce the incidence of delirium.METHODS:Since from January of2011to December of2012,200patients wererandomly selected, above60years old, from orthopedic department ofChongqing Medical University Affiliated Yangchuan Hospital. Thefollowing10factors of patients’ gender, age, anesthesia method, surgicalsite (spine, joint replacement, fracture of the pelvis or femur), the durationof operation, preoperative psychological state, whether the mergerunderlying diseases (hypertension, coronary heart disease, diabetes, hyperlipidemia), the amount of bleeding, hypoxia intraoperative and carbondioxide retention, blood pressure in intraoperative, were carried on the riskassessment by means of statistical analysis, to predict the responsibility ratefor elderly orthopedic patients with postoperative delirium occurred.RESULTS:The factors of Gender, surgical site, blood loss (300ml cut-off point),and whether combined the chronic disease or not (hypertension, diabetes,high cholesterol, coronary heart disease, chronic bronchitis) and otherfactors were demonstrated no relationship between the occurrence ofpostoperative delirium. Nevertheless, the factors including Age, anesthesia,and surgery for hypoxia, duration of surgery and postoperative recoverytime, carbon dioxide retention intraoperative hypotension, mental state inthe preoperative and postoperative sleep disorders have positive impact onthe occurrence or non-occurrence of delirium.CONCLUSIONS:Age, anesthesia, surgery whether hypoxia, duration of surgery andpostoperative recovery time, carbon dioxide retention, hypotension,unstable mental state in the preoperative and postoperative sleep disorderswere positive impact on the occurrence or non-occurrence of delirium.