Objective To discuss the surgery methods and clinical curative effect of application of nickel titanium memory alloy embracing device fixed femoral fractures inside wall of bone block.Methods The clinical data of 27 patients on the application of nickel titanium memory alloy embracing device fixed femoral fractures inside wall with bone block were retrospectively analyzed.There were 9 cases of male and 18 cases offemale.They were 69 ~89 years old,average 76.2 years.And there were 19 cases on the left side of inside wall and 8 cases on the right side. Curative effect evaluation was conducted according to the Evans-Jensen norm and the improved Harris standard. Results Postoperative follow-up loss in 2 cases,and 24 cases received follow-up for 6 ~20 months,which had an average of 14.15 months and follow-up rate was 92.3%.Three cases died respectively because of acute heart failure, cerebral hemorrhage and cor pulmonale.Patients at the time of the last follow-up had Harris mean score(80 ~97), including the optimal 19 cases,fine 4 cases and poor in 1 case,and the excellent rate was 95.8%.Conclusion Sur-gery method of nickel titanium memory alloy embracing device fixed femoral fractures inside wall of bone has reliable fixation,and can restore the biomechanical balance and decrease complications,etc.It allows early functional exercise of hip part in load conditions to obtain ideal therapeutic effect.

Objective To explore the application of failure mode and effect analysis in management of precision instrument in operating room of ophthalmology department.Methods We designed the handover process between operating room of ophthalmology department and supply room,the process of using precision instrument,the workflow of instrument management in nurses. And then,we assessed and analyzed the potential failure mode in the management of precision instrument with the method of failure mode and effect analysis.Besides,failure mode was also evaluated and improved.Results There were failure modes with high risk in the management of precision instrument including that the handover process between operating room of ophthalmology department and supply room was not precise enough (risk priority number,RPN=448);the staff of handover process was not fixed (RPN=360);there was no full-time cleaning staff in supply room (RPN=288);use registers in nurses and the check in precision instrument were all in a lack of standardization (RPN=210, 180) and so on. After adopting targeted corrective actions,the corresponding scores of RPN fell to 0,0,40,70, 90.Conclusions The application of failure mode and effect analysis in management of precision instrument in operating room of ophthalmology department has good effects with no related adverse event on precision instrument.

OBJECTIVE: To assess the predictive value of myocardial scar mass in malignant ventricular arrhythmia (MVA) after myocardial infarction. METHODS: Thirty myocardial infarction patients with complete electrophysiology and cardiac MRI data admitted from January 2012 to August 2017 were enrolled in the study. According to the results of intracavitary electrophysiological study, MVA developed in 16 patients (MVA group) and not developed in 14 patients (non-MVA group). The qualitative and quantitative analysis of left ventricular ejection fraction (LVFE) and scar mass was performed with CV post-processing software and predictive value of myocardial scar and LVEF for MVA after myocardial infarction was analyzed using ROC curves. RESULTS: LVEF in MVA group was significantly lower than that in non-MVA group, and scar mass in MVA group was significantly higher than that in non-MVA group (all <0.05). Regression analysis showed that LVEF (=1.580) and scar mass (=6.270) were risk factors for MVA after myocardial infarction. For predicting MVA, the area under ROC curve () of LVEF was 0.696 with a sensitivity of 0.786 and the specificity of 0.685; the of the scar mass was 0.839 with a sensitivity was 0.618 and the specificity of 0.929; the of LVEF combined with scar mass was 0.848 with a sensitivity of 0.688 and specificity of 0.857. CONCLUSIONS Myocardial scar assessed by late gadolinium enhancement MRI is more effective than LVEF in predicting MVA after myocardial infarction.
Arrhythmias, Cardiac ; diagnosis ; Cicatrix ; diagnostic imaging ; Contrast Media ; Gadolinium ; Humans ; Myocardial Infarction ; complications ; diagnostic imaging ; Predictive Value of Tests ; Ventricular Function, Left