BACKGROUND: 6-minute walking test (6MWT) is a submaximal test, characterizing by easily processing and low cost, thus it is widely used in the clinic. However, how to change walking distance into maximal motor capacity needs to be further studied.OBJECTIVE: To study the correlation of 6-minute walking distance (D), work (W), peak oxygen uptake (VO_2 peak) and maximal oxygen uptake (VO_2 max) detected by Bruce.DESIGN, TIME AND SETTING: This study was performed at tshe Department of Rehabilitation Medicine, Zhongda Hospital affiliated to Southeast University from March to May 2009.PARTICIPANTS: A total of 25 healthy volunteers were enrolled, including 14 males and 11 females, with a mean age of (22.0±2.3) years.METHODS: All 25 subjects were tested with cardiopulmonary exercise testing (CPET) according to Bruce, VO_2 max and anaerobic threshold (AT) was detected respectively, then 6MWT" was adopted to detect 6-minute walking distance (D), work (W) and maximal oxygen uptake (VO_2 max) of subjects. Data of pulmonary gas exchange in breathing was detected by wireless remote sensor K4b~2 to obtain VO_2 max and VO_2 peak.MAIN OUTCOME MEASURES: ① Regularity of cardiac rate, oxygen uptake and respiratory frequency varied with time passing; ② Walking distance, work, oxygen uptake, cardiac rate and respiratory frequency were compared before and after testing; ③ Maximal oxygen uptake and anaerobic threshold with CPET were compared to peal oxygen uptake with 6MWT; ④ Correlation of distance, work between maximal oxygen uptake and peal oxygen uptake.RESULTS: There was no significant difference between AT from CPET and VO2 peak from 6MWT (P > 0.05). 6-minute walking distance was not correlated with either VO_2 peak or VO_2 max. However, 6-minute walking work was linearly correlated with both VO2 peak (r=0.779 7, P < 0.001) and VO_2 max (r=0.894 1, P < 0.001).CONCLUSION: 6-minute walking test is an exercise test at level of anaerobic threshold. 6-minute walking work can reflect both submaximal exercise capacity and maximal exercise capacity.

[Objective]To investigate etiopathogenisis,modus operandi and rehabilitation in treatment of bone nonunion and residual deformity (cubitus valgus) after humeral lateral condyle fractures in children. [Method]The author retrospective summarized a total of 27 patients diagnosed with humeral lateral condyle fracture follow with bone nonunion and/or cubitus valgus consecutive enrolled in Children’s Hospital of Chongqing Medical University from 2001 to 2006,including 19 cases of male,8 cases of female,16 cases of right humeral lateral condyle fracture and 11 cases of left. The mean age at injured for all the patients (n =27) was 5.6 yr (range 3-10 yr).The mean age at suigical operation for all the patients (n =27) was 9 yr (range 5-14 yr).The average time from injury to operation was 2.8 yr (range 8mon-10 yr).There were three modus operations including direct normal position internal fixation of 7 cases,open reduction following os illium bone graft internal fixation of 11 cases,distant humerus varus wedge shape cut orthopaedic for 9 cases.[Result]Thirteen patients were followed up ranging from 6 month to 2 years,and 14 patients over 2 years. All the patients were achieved union for 8 to 16 weeks after surgery. Elbow deformity had been corrected and function of elbow joint had been recoverd satisfactorily. All of them,excellent rerult were found in 13 cases,good in 11 cases,and poor in 3 cases,the excellent and good rates was 88.9%. None of the cases happened with osteonecrosis,traumatic arthritis and myositis ossificans.[Conclusion]It is common that delay treatment of humeral lateral condyle fractures in children can result in bone nonunion and residual deformity (cubitus valgus) and it is difficult for treatment. Corresponding surgical treatment with different condition and early exercise can improve the appearance and function of elbow joint.

Telemedicine is one of the five key components of the "Internet Plus Healthcare".Due to its high speed,real-timeness,low cost,and wide spread,telemedicine is highly feasible in the prevention and control of major infectious diseases.This article introduces the practiceof telemedicine in Peking Union Medical College Hospital during the cornavirus disease 2019(COVID-19)epidemic,during which the network resources were applied to break geographical restrictions and resolve communication barriers between hospitals and departments.This article summarizes the telemedicine application before,during and after COVID-19 control and elucidates how to build a telemedicine prevention and control system for infectious diseases,with an attempt to further improve telemedicine and is application in the public health emergency system in China.
Betacoronavirus ; Coronavirus Infections ; drug therapy ; Humans ; Pandemics ; Pneumonia, Viral ; drug therapy ; Telemedicine

ObjectiveTo investigate the clinical efficacy and safety of Tetramethylpyrazine and Buthus martensi on children with cerebral daminfication syndrome.Methods39 cases with cerebral daminfication syndrome were randomly divided into the study group (18 cases, treated with Tetramethylpyrazine and Buthus martensi) and control group (21 cases, treated only with general nerve nutrition therapy). The curative effect of two groups was evaluated.ResultsAfter treatment, in the study group, 11 cases were cured, 4 cases more effective, 1 case efficacy, 2 cases inefficacy; in the control group, the numbers were 6 cases, 9 cases, 3 cases and 3 cases respectively. There was a significant difference between two groups (P<0.05). There was not side effect in all cases.ConclusionTetramethylpyrazine and Buthus martensi is safe and effective to treat children with cerebral daminfication syndrome.

OBJECTIVETo investigate the status of human papillomavirus ( HPV) infection and its genotypes in male patients in Zhenjiang area.

METHODSUsing PCR and reverse dot blot hybridization, we determined the genotypes of HPV DNA in 245 male patients at our Clinic of Dermatology and STD.

RESULTSThe total rate of HPV infection was 43.67% (107/245), and 18 subtypes were detected. Among the 107 HPV-positive cases, low-risk, high-risk, and combined high- and low-risk infections accounted for 39.25% (42/107), 38.32% (41/107), and 22.43% (24/107), respectively. The most notable low-risk HPV types were HPV6 and HPV11, and the most notable high-risk HPV types were HPV16, HPV52, and HPV58. The rates of single infection and multi-infection were 53.27% (57/107) and 46.73% (50/107), respectively. One case had the most types, infected with 8 genotypes. No statistically significant differences were observed in the total rate of HPV infection among different age groups (Χ2 = 7.999, P > 0.05).

CONCLUSIONThe dominant subtypes of HPV infection in male patients in Zhenjiang area were HPV6, HPV11, and HPV16. The most common subtypes were HPV6 and HPV11 in low-risk infection, and HPV16, HPV52, and HPV58 in high-risk infection.

China ; DNA, Viral ; Genotype ; Humans ; Male ; Papillomaviridae ; classification ; Papillomavirus Infections ; diagnosis ; virology ; Polymerase Chain Reaction

Objective:To investigate the effects of corticotomy assisted orthodontic treatment for mild skeletal Class Ⅱ malocclusion. Methods:7 adult patients with mild skeletal Class Ⅱ division 1 malocclusion were included and underwent corticotomy assisted ortho-dontic treatments.3D measurements and analysis of CBCT data before and after treatment were conducted.Results:The average dura-tion of upper anterior teeth retraction was 3.2 months.After treatment,obvious retraction of up incisiors with the retraction of maxillary alveolar bone and the upper lip backward and downward movement were observed.Conclusion:Corticotomy assisted orthodontic treat-ment is effective in the treatment of mild skeletal Class Ⅱ malocclusion by the retraction of uper anterior teeth,alveolarar bone and soft-tissue profile improvement.

Objective The clinical manifestations of cerebral infarction caused by acute basilar arterial occlusion are complex.The purpose of this study is to explore the relationship between lesion location and onset symptoms of cerebral infarction caused by acute basilar arterial occlusion.Methods Fifty three patients diagnosed with cerebral infarction caused by acute artery occlusion were collected from Nanjing Stroke Registry.They were hospitalized in Jinling Hospital from January 2007 to July 2016 and were divided into sudden onset group and progressive onset group.Their clinical and digital subtraction angiography data were analyzed retrospectively.Results Middle and distal segment of the basilar artery occlusions were usually found in sudden onset group.Patients in progressive onset group were more likely to present with proximal segment of the basilar artery occlusions.Significant statistical difference was found between two groups (P<0.05).Logistic regression analysis showed that the symptoms of patients with proximal segment basilar artery occlusion tended to be progressive onset, compared with patients affected by distal segment occlusion (OR=14.77,95%CI:1.57-139.00, P=0.019).Conclusion There was significant relationship between lesion location and onset symptoms of cerebral infarction caused by acute basilar arterial occlusion.Early diagnosis and timely treatment may improve clinical prognosis in patients.

r study.

Background and purpose: Most of the patients with esophageal cancers were late stage cases when diagnosed clinically. Since the prognosis is very poor, it is extremely important to improve the quality of life (QOL) of these patients. Concurrent chemoradiotherapy is an effective modality for esophageal cancer. However, effects on quality of life of chemoradiotherapy are rarely reported domestically. Our purpose was to assess the immediate effect on the quality of life in patients with primary esophageal carcinoma. Methods: QOL was assessed by the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Chinese edition. Fifty-two patients were randomized to receive either concurrent chemoradiotherapy (CRT) or late course accelerated hyperfractionated radiotherapy (LAHF). QOL questionnaires were given before therapy and at the 4th week during radiotherapy, the completion of radiotherapy, and then after 1 and 3 months after the completion of radiotherapy, respectively. Results: It has been observed that the scores of global health status, physical functioning,role functioning and social functioning during the radiotherapy and from completion of radiotherapy to 1 month post radiotherapy in CRT and LAHF groups, deteriorated temporarily, but it were not significant when compared with those before radiotherapy (P>0.05). However, global health status scores, physical functioning scores, role functioning scores were significantly improved in patients who received CRT at 3 months post radiotherapy. Mean scores were improved by 12.0±3.7 (P=0.012),8.1±2.9 (P=0.023) and 14.8±5.2 (P=0.015), respectively. Nausea and vomiting, pain and appetite loss scales scores rapidly recovered to the baseline level after therapy, although they were worsened during therapy.Conclusion: Global health status scores, physical functioning scores and role functioning scores were significantly improved at 3 months after radiotherapy in patients treated by CRT. In terms of QOL, CRT is a feasible modality for esophageal cancer.

Cervical anastomosis by the thoracic approach for the treatment of upper esophageal cancer can simplify surgical steps and reduce incidence of anastomotic leak. This approach has been used for 26 patients with upper esophageal cancer who were admitted to the Jiangsu Cancer Hospital from July 2006 to August 2009. The mean length between lesion and incisor was 23.3 cm. General anesthesia and double-lumen intubation through left posterolateral incision in the fifth intercostal space was adopted. The stomach was dissociated with the technique of "in situ dissociation", and esophagus was dissociated conventionally. Double purse-string suture was adopted to fix the esophageal mucosa onto the supportive base of the stapler, and make purse-string suture to fix stomach on the center pole of the stapler. There was one failure case which has been converted to the manual cervical anastomosis, and the operations for the rest 25 cases were completed successfully, without anastomotic leakage and positive margin. The average blood loss was (352 ±211 )ml, and the average operation time was (3.7 ±0.6 )hours.