Objective:To explore the effect of autologous fat transplantation based on the fine anatomy of the female perineum and aesthetic standards.Methods:From June 2015 to September 2020, 25 female patients with perineal cosmetology requirements in the Department of Plastic Surgery, the Fourth Affiliated Hospital of Harbin Medical University, aged from 28 to 55 years, with an average of 33.7 years. 50-80 ml of the patient＇s autologous fat were collected and filled according to the perineal anatomy and aesthetic standards. Postoperative anti-inflammatory treatment was implemented and sexual life was forbidden for 2 weeks.Results:25 patients were satisfied with the filling effect immediately after operation. Follow-up for 7 days, 1, 3, and 6 months after operation, 20 of 21 cases underwent pudendal filling operation were very satisfied with the postoperative morphology, and 1 case was less satisfied. Among the 20 cases underwent vaginal filling and labia major filling, 17 cases were very satisfied with the postoperative morphology, 2 cases were satisfied after the operation, and 1 case was less satisfied. Of the 10 cases underwent vaginal and G-spot injection, 6 cases were satisfied after the operation. The morphology was very satisfactory, 2 cases were more satisfactory, and 2 cases were less satisfactory. According to a survey of 25 cases of postoperative sexual life satisfaction, 19 cases (76%) had a significant improvement in their conscious sexual life, 3 cases had a more obvious improvement, 1 case had less improvement, and 2 cases had no conscious improvement.Conclusions:The autologous fat injection based on the fine anatomy and aesthetics of the perineum can significantly improve the aesthetic appearance of the perineum.

Cardiotoxicity is a serious complication of antineoplastic drugs. With the continuous development of antineoplastic drugs, immune checkpoint inhibitors have been used in the treatment of a variety of cancers. PD-1/PD-L1 immune checkpoint inhibitors have been widely concerned in recent years. This article reviews the manifestations and possible mechanisms of cardiotoxicity induced by PD-1/PD-L1 immune checkpoint inhibitors, and the detection methods and treatment of cardiotoxicity.

To investigate the computed tomographc(CT)features of mild/moderate and severe/critical cases of coronavirus disease 2019(COVID-19)in the recovery phase. Totally 63 discharged patients in Wuhan,China,who underwent both chest CT and reverse transcription-polymerase chain reaction(RT-PCR)from February 1 to February 29,2020,were included.With RT-PCR as a gold standard,the performance of chest CT in diagnosing COVID-19 was assessed.Patients were divided into mild/moderate and severe/critical groups according to the disease conditions,and clinical features such as sex,age,symptoms,hospital stay,comorbidities,and oxygen therapy were collected.CT images in the recovery phase were reviewed in terms of time from onset,CT features,location of lesions,lobe score,and total CT score. There were 37 patients in the mild/moderate group and 26 in the severe/critical group. Compared with the mild/moderate patients,the severe/critical patients had older age [(43±16) years (52±16) years; =2.10, =0.040], longer hospital stay [(15±6)d (19±7)d; =2.70, =0.009], higher dyspnea ratio (5.41% 53.85%; =18.90, <0.001), lower nasal oxygen therapy ratio (81.08% 19.23%;=23.66, <0.001), and higher bi-level positive airway pressure ventilation ratio (0 57.69%; =25.62, <0.001). Time from onset was (23±6) days in severe/critical group, significantly longer than that in mild/moderate group [(18±7) days] (=3.40, <0.001). Severe/critical patients had significantly higher crazy-paving pattern ratio (46.15% 10.81%;=4.24, =0.039) and lower ground-glass opacities ratio (15.38% 67.57%; =16.74, <0.001) than the mild/moderate patients. The proportion of lesions in peripheral lung was significantly higher in mild/moderate group than in severe/critical group (78.38% 34.61%; =13.43, <0.001), and the proportion of diffusely distributed lesions was significantly higher in severe/critical group than in mild/moderate group (65.38% 10.81%; =20.47, <0.001). Total CT score in severe/critical group was also significantly higher in severe/critical group than in mild/moderate group [11 (8,17) points 7 (4,9) points; =3.81, <0.001]. The CT features in the recovery stage differ between mild/moderate and severe/critical COVID-19 patients.The lung infiltration is remarkably more severe in the latter.
Adult ; Aged ; Betacoronavirus ; China ; Coronavirus Infections ; diagnostic imaging ; Humans ; Middle Aged ; Pandemics ; Pneumonia, Viral ; diagnostic imaging ; Retrospective Studies ; Tomography, X-Ray Computed

Objective    To investigate CT image features of ground glass opacity (GGO)-like 2019 novel coronavirus (2019-nCoV, SARS-CoV-2) pneumonia (COVID-19) and early-stage lung carcinoma for control and therapy of this acute severe respiratory disease. Methods    We retrospectively analyzed the clinical data of 71 GGO-like COVID-19 patients who received therapy in Tongji Hospital of Huazhong University of Science and Technology between January 17th and February 13th, 2020. These 71 GGO-like COVID-19 patients were as a COVID-19 group. And 80 GGO-like early-stage lung carcinoma patients who underwent resection were as a lung carcinoma group. Clinical features such as sex, age, symptoms including fever, cough, fatigue, myalgia and dyspnea, detailed exposure history, confirmatory test (SARS-CoV-2 quantitative RT-PCR) and pathologic diagnosis were analyzed. Results    Significantly different symptoms and exposure history between the two groups were detected (P<0.001). More lesions (61 patients at percentage of 85.92%, P<0.001), relative peripheral locations (69 patients at percentage of 97.18%, P<0.001) and larger opacities (65 patients at percentage of 91.55%, P<0.001) were found in chest radiographs of GGO-like COVID-19 compared with GGO-like early-stage lung carcinoma. Similar features appeared in early-stage of COVID-19 and lung carcinoma, while pneumonia developed into more extensive and basal predominant lung consolidation. Coexistence of GGO-like COVID-19 and early-stage lung carcinoma might occur. Conclusion    Considering these similar and unique features of GGO-like COVID-19 and early-stage lung carcinoma, it is necessary to understand short time re-examination of chest radiographs and other diagnostic methods of these two diseases. We believe that the findings reported here are important for diagnosis and control of COVID-19 in China.

Objective: To effectively reduce the concentration of poisons in cleanroom, protect the health of workers, realize the optimization and automatic control of the new return air device. And the influence of initial concentration, air volume, temperature and relative humidity of formaldehyde on the purification effect of the new return air device was explored. Methods: The purification effect of the new return air device installed with the activated carbon and the photocatalyst purification net or ordinary activated carbon purification network was tested in a 60 m³ simulated cleanroom. The concentration of formaldehyde was determined by solution absorption-phenol reagent spectrophotometry. Based on the single factor experiment to determine the combination of two purification nets. The effects of air volume, initial formaldehyde concentration, temperature and relative humidity on the purification effect of the new return air device were investigated by orthogonal test. Then, the performance parameters of the return air device to purify formaldehyde were determined. Results: The formaldehyde purification efficiency of the two types of purification nets in the new return air device was higher than that of the ordinary activated carbon purification network (P<0.05) . The combination of activated carbon and photocatalyst purification net has no effect on the formaldehyde purification efficiency of the return air device (P>0.05) . According to the direct analysis and variance analysis, air volume was the most sensitive factor (F value is 18.894, P<0.05) , followed by initial concentration (F value is 16.128, P<0.05) , while temperature and relative humidity have little effect (F value is 0.041 and 0.599, respectively, P>0.05) . LSD analysis showed that there was no significant difference in the purification efficiency of formaldehyde between 475 m³/h and 626 m³/h (P>0.05) . From the perspective of formaldehyde purification efficiency and energy saving, when the air volume is set to 475 m³/h, the new return air device has higher purification efficiency for high concentration of formaldehyde. Conclusion The new return air device consisting of activated carbon and photocatalyst purification net can play a good purification role in cleanroom with different temperatures and different humidity. Its formaldehyde purification efficiency is affected by air volume and initial concentration.

Objective To preliminarily investigate the safety and feasibility of intra-arterial cold saline infusion combined with intravascular reperfusion for acute ischemic stroke with large artery occlusion. Methods From March 2016 to March 2018, consecutive acute ischemic stroke patients with large artery occlusion within 8 h after onset admitted to the Department of Neurology, the People's Hospital of Longhua District, Shenzhen and recanalized successfully after endovascular treatment were enrolled. After recanalization, cold saline was infused through the guiding catheter via the ipsilateral guilty vessel (10 ℃, 33 ml/min for 30 min). Results A total of 20 patients were enrolled, including 15 males. Their median age was 67 years (interquartile range, 53-80 years). Fifteen patients were treated with thrombolysis. A median onset-to-needle time was 300 min (interquartile range, 260-360 min). During the infusion of cold saline, the lowest rectal temperature was only decreased 0. 1 ℃, but within 5 min after completion of perfusion, it returned to the temperature before perfusion. Complications associated with intra-arterial hypothermia were not observed. The median National Institutes of Health Stroke Scale score was significantly decreased from 21 (interquartile range 15-55) before needle to 15 (interquartile range 10-16; Z = -4. 549, P < 0. 001) at discharge. Conclusion Selective intra-arterial cold saline infusion combined with intravascular reperfusion for acute ischemic stroke with large artery occlusion is safe and feasible.

Objective To investigate the security and efficacy of one stage and bilateral resection of thymic tissue and clearance of mediastinal fat by uniportal-video-assisted thoracic surgery(VATS) to cure patients with myasthenia gravis(MG).Methods A number of 131 patients with MG who underwent resection of thymic tissue and clearance of mediastinal fat by VATS in one single center from February 2009 to December 2013 were selected in this retrospective study.76 patients underwent unilateral resection of thymic tissue and clearance of mediastinal fat by three portal VATS from February 2009 to March 2012 and 55 patients underwent one stage and bilateral resection of thymic tissue and clearance of mediastinal fat by small uniportal-VATS from April 2012 to December 2013.The time for operation,the bleeding volume during operation,the volume of postoperative drainage and drainage time,the improvement of symptoms,the postoperative pain,hospital stays and the occurrence of myasthenia gravis crisis were compared between the two groups.Results The general condition and pathological type did not have significant statistical differences between the two groups.The operating time in the uniportal-VATS group was significantly longer than that in three portal VATS group,but the pain was lighter,and the hospital stay was shorter.There were no significant differences between groups in terms of blood loss,postoperative drainage time,and volume of drainage.The follow-up was from 32 to 90 months,and 118 (90.08％)patients completed the follow up.94.5 ％ of the patients in uniportalVATS group acquired complete stable remission(CSR),while it was 84.2％ in three portal VATS group(P ＜ 0.05),and the uniportal-VATS group had lower rate of myasthenic crisis (P ＜0.05).Conclusion One stage and bilateral resection of thymic tissue and clearance of mediastinal fat by small uniportal-VATS is safe and effective with shorter hospital stay and less pain,and it can get higher CSR and less myasthenic crisis,its efficacy is superior to traditional three portal VATS.

A descriptive study to investigate the situation of cross-cultural adaptation and health status among medical international students was carried out using cluster sampling method and self-designed questionnaire in Dalian Medical University.148 international students come from 24 countries.There are 5 religions belief among these students.Islam,Catholic,Hindu,Buddhism and Sikhism.The main obstacles of cross-cultural adaptation are language,accommodation and diet.Economic status and stress of interpersonal relationship are also the main causes affecting the physical and mental health of medical international students.

Objective:To evaluate the changes of the left atrial systolic function in patients with acute myocardial infarction(AMI)using quantitative tissue velocity imaging(QTVI).Methods:The systolic velocities of the middle of left atrial lateral wall,anterior wall,inferior wall and atrial septum were measured with QTV1 in 45 patients with AMI.The left atrial volume and active atrial emptying fraction(AA-EF)were measured using single-plane Simpson method.Results:(1)Compared with the control group(30 normal subjects),the diameter and volume of the left atrium,as well as AA-EF,increased obviously in patients with AMI(P ＜ 0.01).(2)Compared with the control group,the systolic velocities of the middle of left atrial lateral wall,anterior wall,inferior wall and atrial septum,as well as the average value,increased significantly in patients with AMI (P ＜ 0.05 or P ＜ 0.01).In addition,the average value of left atrial systolic velocity was closely correlated with AA-EF(r=-0.906,tr=14.001,P ＜ 0.01).Conclusion:QTVI could be used to evaluate the left atrial systolic function accurately in patients with AMI.