To strongly promote the activity of reading classics among medical students, Chongqing University of Medical Sciences has made a sampling survey on the state of reading and their literature knowledge among the medical students. The survey shows that the medical students agree to the necessity and probability of reading classics, that they also show some obvious preferences for interest in reading and that there is a huge difference in hierarchy,grade and sex with regard to the grasp of literature, history, philosophy, arts and technology for medical students. The outcome of this survey will undoubtedly make a great revelation on how to carry out the activity of reading classics.

Objective:To evaluate the feasibility of high resolution MRI for the measurement of anterior cartilaginous acetabulum-head-index (A-CAHI) and the value of A-CAHI for predicting hip clinical function after treatment in developmental dysplasia of the hip (DDH).Methods:The imaging data of 92 hips from 61 children with treated DDH were retrospectively reviewed in Shandong Medical Imaging Research Institute from January 2019 to January 2020. All children underwent conservative treatments or surgical interventions 3 years ago. Hip function after treatment was evaluated clinically based on the modified MacKay criteria. The hips were divided into satisfactory clinical function group (McKay rating excellent or good, n=46) and unsatisfactory group (McKay rating fair or poor, n=46). All patients were imaged with conventional MRI, high resolution fat suppressed proton density weighted image (FS-PDWI) of the unilateral hip joint in oblique sagittal view, and anteroposterior hip radiographs. A-CAHI and lateral cartilaginous acetabulum-head-index (L-CAHI) were measured respectively on high-resolution oblique sagittal PDWI and conventional coronal T 1WI. Acetabulum head index (AHI) was also measured on anteroposterior hip radiograph. Mann-Whitney U test or independent-samples t test was used to compare the difference of A-CAHI, L-CAHI and AHI between satisfactory and unsatisfactory clinical function groups. The diagnostic value using A-CAHI, L-CAHI, AHI, or A-CAHI combined with L-CAHI for unsatisfactory clinical function were investigated by the ROC curve. The area under the curve (AUC) and the Z statistic were used to compare diagnostic performance. Results:The values of A-CAHI, L-CAHI and AHI were significantly higher in satisfactory clinical function group compared with the unsatisfactory group ( Z=-7.746, -7.735, t=-7.199, all P<0.001).A-CAHI combined with L-CAHI had the significant highest diagnostic accuracy compared with A-CAHI, L-CAHI and AHI (AUC were 0.994, 0.969, 0.968, 0.861, respectively), with significant differences ( Z=1.975, 2.006, 3.553, P=0.048, 0.051,<0.001). The sensitivity and specificity of A-CAHI combined with L-CAHI for the diagnosis of prognosis were 95.7% and 97.8%, respectively. Conclusions:A-CAHI measured by high resolution MRI was found to have the highest diagnostic accuracy for prediction of hip clinical function in the treated DDH, and combined with L-CAHI can improve the diagnostic accuracy significantly.

Objective:To evaluate the oncologic outcomes of different laparoscopic radical hysterectomy.Methods:From January 2011 to December 2014, the laparoscopic operation cases of cervical cancer at stage Ⅰb1, Ⅰb2, Ⅱa1 and Ⅱa2, including the histologic subtypes of squamous-cell carcinoma, adenocarcinoma and adenosquamous carcinoma, were collected in five clinical centers. The data were divided into two groups according to the surgical procedures, that is, modified laparoscopic-vaginal radical hysterectomy (mLVRH) and total laparoscopic radical hysterectomy (TLRH). The overall survival rate (OS), disease-free survival rate (DFS) at 5 years were retrospectively analyzed in this study.Results:There were 674 cases in total, including 377 cases of mLVRH, 297 cases of TLRH. (1) The OS at 5 years: the mLVRH was 96.1% and the TLRH was 92.0%, and the mLVRH was higher than that of TLRH （ P=0.010）. Stratify analysis， including stage of disease （Ⅰb1 and Ⅱa1）， histologic subtypes （squamous-cell carcinoma, adenocarcinoma）， lymph node metastasis， revealed that, ① Stage of disease: in stage Ⅰb1, the OS at five years of mLVRH was higher than that in TLRH group （98.6% vs 93.6%, P=0.012）. In stage Ⅱa1, there was significant difference between the two groups, the OS at five years of mLVRH and TLRH were 93.6% and 77.6% （ P=0.007）. ② Histologic subtypes: for the OS at five years of squamous-cell carcinoma, mLVRH and TLRH were 96.1% and 92.3%, and there was significant difference （ P=0.046）； for adenocarcinoma, the OS at five years were 91.0% and 88.6%， and there was no difference between two groups （ P=0.230）. ③ Lymph node metastasis： the mLVRH and TLRH with lymph node metastasis, the OS at five years were 98.6% and 96.4%; the mLVRH and TLRH without lymph node metastasis, the OS at five years were 89.3% and 80.8%. There were no significant differences between the two groups,respectively ( P=0.156， P=0.093）. (2) The DFS at 5 years: there was no significant difference between mLVRH and TLRH (94.1% vs 90.9%, P=0.220). Stratify analysis for stage of disease, the mLVRH group was higher than that in the TLRH group in stage Ⅰb1 (97.0% vs 92.8%, P=0.039). However, for stage Ⅱa1, there was no significant difference between mLVRH and TLRH group （88.2% vs 75.8%, P=0.074）. Conclusions:The results of this retrospective study indicated that different laparoscopy surgical procedures had diverse oncologic outcomes. The OS at 5 years of the mLVRH is superior to the TLRH. The DFS at 5 years in Ⅰb1 stage, the mLVRH is higher than the TLRH. Therefore, the modified laparoscopy is still an alternative surgery for early cervical cancer patients when following the principle of no-tumor-exposure.

【Objective】 To investigate the clinical characteristics, long-term follow-up rate, level and control rate of low-density lipoprotein cholesterol (LDL-C) in patients with atherosclerotic cardiovascular disease (ASCVD) aged ≥75 years who underwent percutaneous coronary intervention (PCI) during hospitalization. 【Methods】 We selected ASCVD patients aged ≥75 years with PCI from January 2016 to December 2020 in The First Affiliated Hospital of Xi’an Jiaotong University, collected the baseline data of the patients and the follow-up of 1 month, 3 months, 6 months and 12 months after discharge by HIS system, and analyzed their LDL-C and control rate at each follow-up. 【Results】 A total of 1 129 patients were enrolled in this study, aged 78 (ranging from 75 to 89) years. Among them 72.1% were male; myocardial infarction was the main type of ASCVD (71.5% ); hypertension was the most common risk factor, accounting for 85.2% (717/842), followed by diabetes, 58.6% (493/842); 74.6% met the ultra-high risk criteria of the 2020 Chinese Expert Consensus on Lipid Management in Ultra-High Risk ASCVD Patients, and the LDL-C control rate was only 8.1% . The four routine follow-up rates of 1 129 elderly ASCVD patients were 49.5%, 24.1%, 17.1%, and 24.6%, respectively. The detection rates of LDL-C during follow-up were 26.3%, 5.3%, 10.4%, and 13.8%, respectively. LDL-C control rates in ultra-high risk ASCVD were 59.4%, 45.1%, 37.1%, and 17.6%, respectively, while LDL-C control rates in non-ultra-high risk ASCVD patients were 67.3%, 55.6%, 47.4%, and 44.0%, respectively. 【Conclusion】 The elderly patients with ASCVD-PCI were mainly ultra-high risk patients. The routine follow-up rate and the LDL-C compliance rate during follow-up were low and showed a downward trend.

Objective To investigate the correlation between lung Point-of-Care ultrasound score and clinical indicators by analyzing the features of Point-of-Care ultrasound in acute COVID-19.Methods 30 COVID-19 patients admitted to the Affili-ated Hospital of North Sichuan Medical College were selected,lung Point-of-Care ultrasound sequential scan was conducted in pa-tients with the BLUE-PLUS regimen and the lung Point-of-Care ultrasound semi-quantitative scoring was performed.The clinical indicators of partial pressure of carbon dioxide,anion gap,PH value,standard bicarbonate,oxygen partial pressure,oxygen satu-ration,the lymphocyte percentage(LYM% ),the lymphocytic absolute value(LYM#),the clinical typing,hospital stay,etc were collected.The lung Point-of-Care ultrasound score of acute COVID-19 patients in different clinical typing was compared and the features of Point-of-Care ultrasound in acute COVID-19 were analyzed.The ROC curve was constructed to analyze the effec-tiveness of lung Point-of-Care ultrasound score for the typing of normal type and(critical)severe type.Results In 30 cases of COVID-19 patients during the acute period,there were 29 patients with at least one lung point involvement on both sides(96.7% ),1 case with at least one lung point involvement on one side(3.3% )and 15 cases showed Lung consolidation＞1cm at least one lung point.Comparison of the same lung point between the left and right lung was performed and there was statistical-ly significant difference in the total scores between the left and right lung(P＜0.05).Comparison of total scores of different lung points in patients with different clinical types showed there was statistically significant difference in the total scores of left lung,the total scores of right lung,the total scores of whole lung between normal type and critical type(P＜0.05).The area under the curve(AUC)for the diagnosis of normal and(critical)severe types based on the total lung scores is 0.870.The total scores of the left lung,right lung,and whole lung were not correlated with LYM% ,LYM#,and anion gap(P＞0.05)were positively cor-related with clinical typing and hospital stay,and negatively correlated with standard bicarbonate(P＜0.05).The total scores of the left lung and whole lung were negatively correlated with PH value,oxygen partial pressure,and oxygen saturation,but posi-tively correlated with partial pressure of carbon dioxide(P＜0.05).The total scores of the right lung was not correlated with PH value,partial pressure of carbon dioxide,oxygen partial pressure,and oxygen saturation(P＞0.05).Conclusion There were differences in Point-of-Care ultrasound features among patients with different clinical types of acute COVID-19,Lung Point-of-Care ultrasound semi-quantitative scoring is correlated with pH value,partial pressure of carbon dioxide,standard bicarbonate,ox-ygen partial pressure,oxygen saturation,clinical typing and hospital stay.The patients of critical type have higher scores,lung Point-of-Care ultrasound is expected to be used for clinical typing and condition evaluation of acute COVID-19 patients.

Objective To characterize the species of invasive Pomacea snails that were discovered for the first time in Shandong Province. Methods Pomacea snails samples were collected in the field of Jining City, Shandong Province on October 2021 for morphological identification. Pomacea snails were randomly sampled and genomic DNA was extracted from foot muscle tissues of Pomacea snails for multiplex PCR amplification. The PCR amplification product was sequenced. Then, the sequence was aligned and a phylogenetic tree was created using the software MegAlign 7.1.0. In addition, Angiostongylus cantonensis infection was detected in Pomacea snails with the lung microscopy. Results A total of 104 living Pomacea snails were collected, and all were characterized as Pomacea spp. based on morphological features. Of 12 randomly selected adult Pomacea snails, multiplex PCR assay and sequencing identified eleven snails as P. canaliculata and one as P. maculata. No A. cantonensis infection was detected in 104 Pomacea snails. Conclusion This is the first report of invasive Pomacea snails in Shandong Province, where P. canaliculata and P. maculata are found.