Objective The present study was to investigate the feasibility of use of high resolution magnetic reso?nance vessel wall imaging(HR-VWI)in evaluation of intracranial aneurysms. Methods We prospectively collected data from patients who had intracranial aneurysms and received HR-VWI scan before surgical treatment or conservative treatment. Aneurysms were divided into ruptured group (n=12) and unruptured group (n=88). Aneurysm site, size, neck, aspect ratio(AR), daughter sac and aneurysmal wall enhancement scale were analyzed in both groups. Univariate and multivariate Logistic regression were performed to evaluate the risk factors of aneurysm rupture. Subgroup analysis was also performed to study symptomatic and asymptomatic unruptured aneurysms. Results Aneurysm size(t=2.187,P=0.031),AR(t=3.164,P=0.002),incidence of daughter sac(P=0.012) and aneurysmal wall enhancement scale(P<0.001)were higher in ruptured aneurysm group. Multivariate Logistic regression showed that aneurysmal wall enhance?ment scale was the only independent risk factor of ruptured aneurysms(P=0.002). Subgroup analysis showed aneurysm wall enhancement scale(P<0.001) and AR(t=3.939,P<0.001) were higher in symptomatic unruptured aneurysms. Conclusion Aneurysm wall enhancement on HR-VWI is more frequently seen in ruptured aneurysms and symptomatic unruptured aneurysms. Histological study is needed for better understanding of the mechanism of aneurysm wall enhance?ment.

Objective: To explore the present perceptions of patient-empowering nurse behaviours, self-efficacy and patient activation among patients with chronic diseases, and analyze the influencing mechanism among these three variables. Methods: Using convenient sampling method, a total of 485 inpatients with chronic diseases were sampled from two tertiary comprehensive hospitals in Guangzhou on the day of discharge between March and October 2017. They were surveyed with the demographic questionnaire, Patient Perceptions of Patient-Empowering Nurse Behaviours Scale , Chronic Disease Self-Efficacy Scale and Patient Activation Measure. Results: Empowerment could positively predict self-efficacy (β=0.402, P<0.01) and patient activation (β=0.169, P<0.01). Self-efficacy could also positively predict patient activation (β=0.887, P<0.01). And self-efficacy, of which the effect accounted for 67.87% of the total effect, played a partial intermediary role between empowerment and patient activation. Conclusions To improve patient activation, empowerment and self-efficacy should be both emphasized and applied by the nurses, so that patients can move smoothly from a care receiver before discharge to one of self-management.