Objective To discuss the application of automatic quantitative parameters of three-dimensional ultrasound(3-D ultrasound)in evaluating left ventricular function and quality of life in patients with myocardial infarction after receiving percutaneous coronary intervention(PCI),and to construct a nomogram prediction model based on the influencing factors.Methods A total of 300 patients with myocardial infarction,who were admitted to Yixing Hospital of Jiangsu University from January 2022 to January 2024,were enrolled in this study.The patients were randomly divided into experimental group(n=200)and validation group(n=100).According to the quality of life at three months after PCI,the patients in the experimental group were subdivided into poor-quality of life subgroup(n=52)and good-quality of life subgroup(n=148).The clinical data of the two subgroups were collected,and the clinical indicators having differences between the two groups were included in the logistic regression model to analyze the factors affecting the poor quality of life of myocardial infarction patients after PCI.According to the influencing factors,a nomogram prediction model was constructed.The receiver operating characteristic(ROC)curve was used to analyze the efficacy of the nomogram prediction model in predicting poor quality of life in patients with myocardial infarction after PCI.The external validation group was used to verify the predictive efficacy of the nomogram prediction model for poor quality of life in patients with myocardial infarction after PCI.Results No statistically significant differences in the clinical data existed between the experimental group and the validation group(P＞0.05).Comparison of the clinical data between the two subgroups showed that statistically significant differences in the age,BMI,diabetes history,left ventricular ejection fraction(LVEF),left ventricular end-systolic volume(LVESV),left ventricular end-diastolic volume(LVEDV),left ventricular global peak longitudinal strain(GLS),left ventricular global peak radial strain(GRS),and left ventricular global peak area strain(GAS)existed between the two subgroups(all P＜0.05).LVEF,LVESV,LVEDV and GLS were the influencing factors for poor quality of life in patients with myocardial infarction after PCI.ROC analysis showed that the AUC of LVEF,LVESV,LVEDV,GLS and nomogram prediction model were 0.763,0.790,0.786,0.729 and 0.921 respectively,indicating LVEF,LVESV,LVEDV and GLS had certain predictive value for poor quality of life in patients with myocardial infarction after PCI,and the nomogram prediction model had higher predictive value.When taking the cut-off value,the sensitivities of LVEF,LVESV,LVEDV,GLS,and nomogram prediction model were 0.728,0.730,0.838,0.660 and 0.951 respectively,and the specificity were 0.730,0.796,0.631,0.730 and 0.865 respectively.Internal validation of the nomogram prediction model using the Bootstrap method(B=1 000)showed that the prediction curve basically coincided with the ideal line,and the nomogram model had good predictive ability.The decision curve of this model showed that its net return rate was＞0 in the threshold probability range of 0.03-1.00.When the validation group was used to verify the nomogram prediction model,the AUC was 0.903,when the cut-off value was taken,the sensitivity was 0.838 and the specificity was 0.856.In the external validation group,the nomogram prediction model had a high predictive value for poor quality of life in patients with myocardial infarction after PCI.Conclusion LVEF,LVESV,LVEDV and GLS are the adverse factors affecting the quality of life in patients with myocardial infarction after PCI.The nomogram prediction model that is constructed based on LVEF,LVESV,LVEDV and GLS has a higher predictive ability for poor quality of life in patients with myocardial infarction after PCI,which is helpful for guiding clinical intervention and treatment.

Objective To explore the efficacy of endoscopic minimally invasive release surgery and ultrasound-guided percutaneous needle knife release in treating carpal tunnel syndrome(CTS).Methods A total of 96 patients with CTS,who received treatment at Yixing People's Hospital and Wuxi Ninth Hospital Orthopedic Hospital from January 2021 to December 2024,were selected for this study.Using a random number table method,the 96 patients were divided into an endoscopic group and an ultrasound group,with 48 patients in each group.The patients of endoscopic group received endoscopic minimally invasive release surgery,while the patients of ultrasound group received ultrasound-guided needle knife treatment.The surgical indicators,efficacy,wrist function,median nerve electrophysiological indicators,anatomical indicators,efficacy,and safety were compared between the two groups.Results In the ultrasound group,the surgical duration and postoperative recovery time were shorter than those in the endoscopic group(P＜0.05),and the surgical cost was lower than that in the endoscopic group(P＜0.05).The postoperative Symptom Severity Score(SSS)and Functional Status Scale(FSS)score of both groups were decreased when compared with their preoperative values(P＜0.05),and the SSS and FSS of the ultrasound group were lower than those of the endoscopic group(P＜0.05).After treatment,the resting pain score and activity pain score of both groups were decreased when compared with their preoperative values(P＜0.05),and the resting pain score and activity pain score in the ultrasound group were lower than those in the endoscopic group(P＜0.05).After treatment,both groups showed a reduction in median nerve flattening ratio(FR)and transverse carpal ligament(TCL)thickness when compared with their preoperative values(P＜0.05),and the reduction degree in the ultrasound group was greater than that in the endoscopic group(P＜0.05).After treatment,both groups showed an increase in sensory nerve conduction velocity(SNCV),sensory nerve action potential amplitude(SNAP),and motor nerve action potential amplitude(CMAP)when compared with their preoperative values(P＜0.05),which in the ultrasound group showed a greater improvement than those in the endoscopic group(P＜0.05).The postoperative distal motor latency(DML)was decreased in both groups(P＜0.05),and the DML in the ultrasound group was lower than that in the endoscopic group(P＜0.05).The therapeutic efficacy in the ultrasound group was higher than that in the endoscopic group(P＜0.05).Conclusion Compared to endoscopic minimally invasive release surgery,ultrasound-guided needle knife treatment is more effective in promoting the recovery of wrist joint function in patients with CTS.It can effectively decrease the pain severity of patients,repair anatomical injuries in the wrist,promote the recovery of nerve electrophysiological indicators of the median nerve,with good safety and lower medical costs.