Duchenne muscular dystrophy(DMD)is a fatal muscular wasting disease in children.Because of various factors such as DMDˊs low incidence,quick progression,limited knowledge of this disease,and treat-ment outcomes of respiratory failure,heart failure has become the leading cause of death in these patients.Early diagnosis and treatment is essential for prolonging the survival time and improving the quality of life.This review describes recent progress in the study of epidemiology,pathogenesis,early diagnosis,prevention and treatment of cardiac injury in patients with DMD.

Objective To investigate the effect of 12 Fr catheter on the catheteration for the patients with prostatic hypertrophy after stroke. Methods One hundred and four sixteen patients with prostatic hypertrophy from urinary detention were divided into the control group (n=80) and the observation group (n=84) based on the odd and even numbers of admission date according to a digit random table. The control group received catheteration with a 14~20 Fr catheter, and the observation group did with a 12 Fr catheter. The two groups were compared in terms of pains, urethral injury and leakage of urine during intubation. Result The pain, urethral injury, leakage of urine in the observation group were all significantly lowered than those of the control group (all P<0.05). Conclusions 12 Fr catheter for catheteration for the patients with post-stroke prostatic hypertrophy can significantly reduce the degree of pain, the urethral injury and leakage of urine. Thus it is worthy of clinical application.

Objective:To explore the application of the Simodont dental trainer in preclinical manual dexterity training for dental students of different grades, and to discuss its effect by quantitatively evaluating their practice results.Methods:The evaluation was conducted among 118 students in the Department of Stomatology, Shantou University Medical College from Batch 2015 to Batch 2018. Each student had five different manual dexterity modules for training. Each module had three levels of difficulty and was required to be completed in 30 minutes. The assessment index included Target, Leeway Bottom and Sides, Container Bottom and Sides, which was provided by the Simodont dental trainer. The operating time (in seconds), the displacement of the dental hand pieces and the dental mirrors (in meters) were simultaneously recorded. SPSS 25.0 was used for statistical analysis.Results:For the index Target, Leeway Bottom and Sides, Container Bottom and Sides, the results showed that there was a statistical difference between students who passed pre-clinical training and who did not take the professional course ( P < 0.001). For the index Target, differences were showed among students from different grades in all modules ( P < 0.001). Conclusion:The circle module, channel module, hollow-circle module and cross-module in the Simodont dental trainer have sensitivity to discriminate the manual dexterity of different levels of dental students. The further assessment of the discrimination of the manual dexterity is required for assume-block module. The Simodont dental trainer can quantitatively measure the manual dexterity of dental students, which is important for the quantitative evaluation of dental preclinical education.

Hypertensive disorder of pregnancy (HDP) involves two major public health issues: mother-infant safety and prevention and controlling major chronic disease. HDP poses a serious threat to maternal and neonatal safety, and it is one of the leading causes of maternal and perinatal morbidity and mortality worldwide, as well as an important risk factor for long-term cardiovascular disease (CVD). In order to explore effective strategies to prevent and control the source of CVD and reduce its risk, we have established a cohort of HDPs in Shenzhen for the primordial prevention of CVD. The construction of the HDP cohort has already achieved preliminary progress till now. A total of 2 239 HDP women have been recruited in the HDP cohort. We have established a cohort data management platform and Biobank. The follow-up and assessment of postpartum cardiovascular metabolic risk in this cohort has also been launched. Our efforts will help explore the pathophysiological mechanism of HDP, especially the pathogenesis and precision phenotyping, prediction, and prevention of pre-eclampsia, which, therefore, may reduce the risk of adverse pregnancy outcomes, and provide a bridge to linking HDP and maternal-neonatal cardiovascular, metabolic risk to promote the cardiovascular health of mothers and their infants.