Background. Postoperative cognitive dysfunction (POCD) refers to disorders affecting orientation, attention, perception, consciousness, and judgment that develop after geriatric orthopedic surgery. Cerebral blood oxygen saturation detection is a way to diagnose cerebral oxygen supply during operation. At present, more and more applications are used for early diagnosis of postoperative cognitive function. Therefore, the present study is to analyze the relationship between postoperative cognitive dysfunction and cerebral blood oxygen saturation in elderly orthopedic patients. Methods. This study enrolled 90 elderly patients undergoing orthopedic surgery in our hospital. According to the postoperative cognitive dysfunction, they were divided into POCD group ( N = 45 ) and no-POCD ( N = 45 ) group. The cognitive and psychological function and cerebral blood oxygen saturation were analyzed before and 3 months after the operation. Finally, the indicators of cognitive psychological function and the indicators of cerebral blood oxygen saturation are correlated and analyzed. Results. Compared with the normal group, patients with cognitive dysfunction at 3 months after surgery time below preoperative rScO2, time below a 10% decrease from preoperative rScO2, CDL preoperative, minimum rScO2 value, and maximum rScO2 value have significant changes. The results of the correlation analysis found that there is also a significant correlation between the postoperative cognitive and psychological function of the patient and the cerebral blood oxygen saturation at 3 weeks after the operation. Conclusion. In elderly orthopedic patients, there is a significant relationship between cerebral blood oxygen saturation detection and cognitive function 3 months after surgery.

Objective: Nurses are able to identify the risks of constipation, and manage patients who are having constipation with standardized documentation using Bristol Stool Chart. Methods: A multiple-choice pre-test on constipation were distributed to the nurses. Followed by sharing with the nurses the results of the pre-test. Educational sessions using power point slides were scheduled during roll-calls. The new practice were introduced to all nurses within two weeks. Mutiple-choice post-tests were given to the nurses to check the effectiveness of the educational sessions. Audit was done to evaluate the effectiveness of the new practice and measure the compliance rate of documentation. Results were collated and shared with the nurses. Results: All nurses were briefed on Bristol Stool Chart documentation and attended the educational sessions. Nurses that carried out the nursing interventions to reduce the risk of developing constipation increased from 60% to 70%. The number of patients developing constipation reduced from 40% to 17% after the new practice was implemented. Discussion: Increasing the nurses' knowledge will allow better nursing care in preventing and managing patients with constipation, hence, better patient outcomes. Conclusion: Applying the learned knowledge on constipation and documentation on the Bristol Stool Chart, the nurses will be able to prevent and manage patients' constipation effectively in the ward.