Objective To evaluate the value of measurement of the width of pars compacta of substantia nigra(SNc) and SNc's ratio to midbrain diameter in diagnosing Parkinson's disease(PD) and differentiating PD from vascular parkinsonism(VP) on routine MRI.Methods The width of SNc, midbrain diameter, and SNc's ratio to midbrain diameter were measured in 60 patients with PD (38 patients with Hoehn-Yahr stage Ⅰ～Ⅱ, 14 patients with Hoehn-Yahr stage Ⅲ, and 8 patients with Hoehn-Yahr stage Ⅳ), 60 patients with VP (26 patients with Hoehn-Yahr stage Ⅰ～Ⅱ, 20 patients with Hoehn-Yahr stage Ⅲ, and 14 patients with Hoehn-Yahr stage Ⅳ), and 60 age-matched heathly control subjects by means of routine axial T 2-weighted MRI. The results of measurement were analyzed and compared.Results Significant reduction was found in the width of SNc and SNc's ratio to midbrain diameter in PD compared those in VP and control subjects(P

Objective To analyze satisfaction of the clinical practice content of nursing postgraduates with different characteristic, and to provide transformative suggestions for the construction of clinical practice scheme of nursing postgraduates. Methods Using judgment sampling and snowball sampling, the questionnaire survey was conducted among 101 nursing postgraduates, and comparing satisfaction of clinical practice content of postgraduates with different age, work experience and teaching mode. SPSS 17.0 software package was used for data description and t test. Results The total satisfaction of clinical practice content of nursing postgraduates was low, and different postgraduates′satisfaction was different. On practical operation opportunity,> 30 years old of postgraduates′satisfaction was (3.95±0.87), which was higher than those 20~30 years old, (3.35±0.90), and the difference was statistically significant, t=2.748, P<0.01. On clinical practice assessment methods and frequency, the satisfaction of postgraduates with a fixed teacher was higher than those without a fixed teacher (3.40±0.74) vs. (2.83±0.87), and the difference was statistically significant, t=3.310, P<0.01. Conclusions At present, the clinical practice content of nursing postgraduates is in shortage, and need to be further improved.

Objective To explore the influence factors for bronchopulmonary dysplasia(BPD) in different gestational age preterm infants.Methods The medical records of 118 premature infants who were diagnosed as BPD at West China Second Hospital,Sichuan University from January 1,2011 to December 31,2015 were retrospectively analyzed.According to the gestational age,the premature infants were divided into extremely-early-premature infants group (＜ 28 weeks),very-early-premature infants group (28-31 weeks) and late-premature infants group (32-36 weeks).The differences in pregnancy complications,the use of glucocorticoids before delivery,gender,mode of production,medication for preterm infants with different gestational age preterm infants were analyzed.Results One hundred and eighteen preterm infants included 18 extremely-early-premature infants,82 very-early-premature infants,and 18 late-preterm infants;71 baby boys and 47 baby girls,with birth weight ≤1 000 g in 27 cases,1 000-1 500 g in 70 cases,1 500-2 000 g in 15 cases,and ＞2 000 g in 6 cases.There was a statistically significant difference as for the full use of continuous positive airway pressure between the extremely-early-premature infants group (9 cases) and the late-preterm infants group(2 cases) (x2 =6.415,P =0.011).The late-preterm infants group whose mothers experienced preeclampsia were more seriously affect than extremely-early premature infants group (x2 =4.018,P =0.045) and very-early-premature infants group (x2 =4.878,P =0.027),and there was no statistically significant difference between extremely-early-premature infants group and very-early-premature infants group (x2 =0.279,P =0.597).A significantly increased total oxygen duration was observed in extremely-early-premature infants group [(56.56 ± 29.58) d] compared with very-early-premature infants group[(43.15 ± 14.86) d] and late-preterm-infants group [(37.75 ± 16.87) d] (F =8.185,P =0.000) with statistically significant difference.A significantly increased hospitalization time was observed in extremely-early-premature infants group [(56.56 ± 29.58) d] com-pared with very early premature infants group [(46.23 ± 14.04) d] and late-preterm-infants group [(39.06 ± 29.81) d] (F =5.606,P =0.004).Conclusions The number of BPD in extremely-early-premature infants and very-early-premature infants increases compared with that in the late-preterm infants.Gestational age is the high risk factor for the occurrence of BPD,the gestational age should be delayed as late as possible.Prevention of extremely-early-premature birth and very-early-premature birth,and avoidance of intrauterine hypoxia and rational use of oxygen are the important measures for prevention of BPD occurred in premature infants and reducing hospitalization time.

Objective: To investigate nutritional quality of school lunch in some primary schools and middle schools in the Pearl River Delta, and to provide the scientific basis for improving the nutritional quality of students lunch and formulating scientific and effective interventions. Methods: Five-day lunch meal survey by chemical analysis were conducted, and students lunch at school were recorded by meal review in three age groups from 8 primary and middle schools in the Pear River Delat area. The energy and nutrient content were obtained and compared with the reference intake of dietary nutrients of student. Results: The average protein intake at lunch of all age groups had reached the recommended standard (80%-95%), the energy supply ratio of carbohydrate in the range of 38.3%-42.3%, the energy supply ratio of fat in 63% school meal exceeded the recommended standard. Vitamin A, vitamin B 1, vitamin B 2, calcium, iron and other nutrients were seriously inadequate; while sodium intake far exceeded the recommended standard. Conclusion The main nutrients of school lunch of primary and middle school in Pearl River Delta can basically meet the growth and development needs, but there are still some deficiency and unbalanced diet nutrient content which are lower than the recommended intake. It is recommended to strengthen nutrition education of catering enterprises and school to improve the scientific combination of diets.

Traumatic rib fractures are the most common injury in thoracic trauma. Previously，the patients with traumatic rib fractures were mostly treated non-surgically，of which 50%，especially those combined with flail chest presented chronic pain or chest wall deformities and over 30% had long-term disabilities，being unable to retain a full-time job. In the past two decades，thanks to the development of internal fixation material technology，the surgical treatment of rib fractures has achieved good outcomes. However，there are still some problems in clinical treatment，including inconsistency in surgical treatment and quality control in medical services. The current consensuses on the management of regional traumatic rib fractures published at home and abroad mainly focus on the guidance of the overall treatment decisions and plans，and relevant clinical guidelines abroad lacks progress in surgical treatment of rib fractures in recent years. Therefore，the Chinese Society of Traumatology affiliated to Chinese Medical Association and Chinese College of Trauma Surgeons affiliated to Chinese Medical Doctor Association，in conjunction with national multidisciplinary experts，formulate the Chinese Consensus for Surgical Treatment of Traumatic Rib Fractures（2021）following the principle of evidence-based medicine，scientific nature and practicality. This expert consensus puts forward some clear，applicable，and graded recommendations from aspects of preoperative imaging evaluation，surgical indications，timing of surgery，surgical methods，rib fracture sites for surgical fixation，internal fixation methods and material selections，treatment of combined injuries in rib fractures，in order to provide references for surgical treatment of traumatic rib fractures.

Here, we report a previously unrecognized syndromic neurodevelopmental disorder associated with biallelic loss-of-function variants in the RBM42 gene. The patient is a 2-year-old female with severe central nervous system (CNS) abnormalities, hypotonia, hearing loss, congenital heart defects, and dysmorphic facial features. Familial whole-exome sequencing (WES) reveals that the patient has two compound heterozygous variants, c.304C>T (p.R102*) and c.1312G>A (p.A438T), in the RBM42 gene which encodes an integral component of splicing complex in the RNA-binding motif protein family. The p.A438T variant is in the RRM domain which impairs RBM42 protein stability in vivo. Additionally, p.A438T disrupts the interaction of RBM42 with hnRNP K, which is the causative gene for Au-Kline syndrome with overlapping disease characteristics seen in the index patient. The human R102* or A438T mutant protein failed to fully rescue the growth defects of RBM42 ortholog knockout ΔFgRbp1 in Fusarium while it was rescued by the wild-type (WT) human RBM42. A mouse model carrying Rbm42 compound heterozygous variants, c.280C>T (p.Q94*) and c.1306_1308delinsACA (p.A436T), demonstrated gross fetal developmental defects and most of the double mutant animals died by E13.5. RNA-seq data confirmed that Rbm42 was involved in neurological and myocardial functions with an essential role in alternative splicing (AS). Overall, we present clinical, genetic, and functional data to demonstrate that defects in RBM42 constitute the underlying etiology of a new neurodevelopmental disease which links the dysregulation of global AS to abnormal embryonic development.
Female ; Animals ; Mice ; Humans ; Child, Preschool ; Intellectual Disability/genetics* ; Heart Defects, Congenital/genetics* ; Facies ; Cleft Palate ; Muscle Hypotonia