Objective To investigate the effect and safety of bronchial balloon positioning combined with autologous blood bronchial occlusion in the treatment of intractable pneumothorax.Methods 36 cases of hospitalized patients with refractory spontaneous were collected as the research object,based on the bronchial balloon positioned upstream bronchoscopy combined with autologous blood bronchial occlusion therapy.The efficacy and adverse reac-tions were followed up for one year.Results In the 36 cases of spontaneous pneumothorax in patients with refractory, 30 patients were successfully positioning balloon (83.33%),6 cases of patients who were not successfully positio-ning,were continued with conservative treatment of indwelling thoracic drainage.In 30 patients underwent successful positioning,autologous blood bronchial occlusion were used,and a total of 24 cases (80.0%)patients successfully reduced bubbles escape;6 patients relapsed,who were continued to retainthoracic drainage conservative treatment. Conclusion Bronchial balloon positioning combined with autologous blood bronchial occlusion in the treatment of intractable pneumothorax has accurate positioning and high blocking success rate,and also is safe and effective.It is worth promoting in clinical practice.

Objective To examine the distribution of Malassezia species in follicular contents and perifollicular superficial skin in patients with Malassezia folliculitis and search for its causative agent. Methods A total of 120 patients with Malassezia folliculitis were investigated. Follicular lesions at three different anatomic sites were selected in each patient. Perifolliclar superficial skin specimens were taken by sterile adhesive tape, and the follicular contents of the same follicle were taken by sterile haemostatic forceps. The above specimens were cultured respectively on media containing rapeseed oil. The isolated colonies were identified by their physiological and morphological characteristics. Results Out of 319 isolates obtained from the perifollicular superficial skin, 247 isolates (77.43%) were identified as M. sympodialis, 40 isolates (12.54%) as M. furfur, 27 isolates(8.46%) as M. globosa and 5 isolates(1.57%) as M. obtusa. Out of 314 isolates obtained from follicular contents, 252 isdates(80.25%) were identified as M. globosa, 57 isolates(18.15%) as M. sympodialis, 4 isolates(1.27%) as M. furfur, and 1 isolate(0.32%) as M. obtusa. There was statistical difference in species distribution between the follicular contents and the perifolliclar superficial skin (P

Recently, plasma sterilization has attracted increasing attention in dental community for the atmospheric pressure non-equilibrium plasma jet (APNPs), which is driven by a kilohertz pulsed DC power, may be applied to the dental and oral diseases. However, it is still in doubt whether APNPs can effectively kill pathogenic bacteria in the oral cavity and produce no harmful effects on normal oral tissues, especially on normal mucosa. The aim of this study was to evaluate the bacterial-killing effect of APNPs in the biofilms containing a single breed of bacteria (Porphyromonas gingivalis, P.g.), and the pathological changes of the oral mucosa after treatment by APNPs. P.g. was incubated to form the biofilms in vitro, and the samples were divided into three groups randomly: group A (blank control); group B in which the biofilms were treated by APNPs (the setting of the equipment: 10 kHz, 1600 ns and 8 kV); group C in which the biofilms were exposed only to a gas jet without ignition of the plasma. Each group had three samples and each sample was processed for up to 5 min. The biofilms were then fluorescently stained, observed and photographed under a laser scanning confocal microscope. In the animal experiment, six male Japanese white rabbits were divided into two groups randomly (n=3 in each group) in terms of the different post-treatment time (1-day group and 5-day group). The buccal mucosa of the left side and the mucosa of the ventral surface of the tongue were treated by APNPs for 10 min in the same way as the bacterial biofilm experiment in each rabbit, and the corresponding mucosa of the other sides served as normal control. The clinical manifestations of the oral mucosa were observed and recorded every day. The rabbits were sacrificed one or five day(s) after APNPs treatment. The oral mucosa were harvested and prepared to haematoxylin and eosin-stained sections. Clinical observation and histopathological scores were used to assess mucosal changes. The results showed the obvious P.g. biofilms were formed at 10 days, and most of the bacteria in groups A and C were alive under a laser scanning confocal microscope, but the bacteria in the group B were almost all dead. In animal experiment, no ulcers, anabrosis and oral mucositis were found in both the 1-day and 5-day groups. The average mucous membrane irritation index was -0.83 and -0.67 in the 1-day and 5-day groups, respectively, suggesting that no intense mucosal membrane irritation responses occurred. It was concluded that APNPs could effectively kill P.g. in the biofilms and did not cause any pathological changes in the normal mucosa, suggesting that the plasma jet (APNPs) may be applied to oral diseases as a novel sterilization device in the future.

ObjectiveTo study the characteristics and risk factors of traffic injuries among the adolescents (0-19 years old) in the urban and rural areas of Chongqing and discuss the preventive strategy. MethodsData of road traffic crashes and injuries involving 0-19 years old adolescents over a seven-year period (2000-2006) in three districts of Chongqing was picked up from Road _Traffic Crashes and Injuries Database. Epidemiological characteristics of the traffic crashes and injuries among 0-19 years old adolescents were analyzed and differences between rural and urban areas were studied. ResultsFrom 2000 to 2006, both incidence rate and mortality rate peaked in the urban fringe area were 95.43/100 000 and 3.44/100 000 respectively. Traffic accidents in the suburbs and counties had the highest injury extent, with mortality rate of 9.06％ and severe injury rate of 17.33％. Brain injuries were the primary cause of death. Among the victims, 62.7％ were the pedestrians, of which 20.72％ bore equal responsibility because of disobeying traffic signals, suddenly walking across roads and not walking along the sidewalk. Ninety percentage of the traffic accidents occurred in the sections with no traffic signals or traffic control system. ConclusionIt is important to enhance the traffic safety consciousness of teenagers and children, strengthen preventive measures in fringe areas and rural areas and improve the emergency medical system in rural areas to provide the teenagers and children with a safety traffic environment.

Objective To observe the clinical efficacy of HE’s needling method (three ways for unblocking) in treating mild simple obesity due to dampness from spleen deficiency.Method Forty eligible subjects with mild simple obesity due to dampness from spleen deficiency were randomized into group A and group B, 20 cases in each group. Group A was intervened by mild unblocking method plus intensive unblocking method from HE’s needling method, and group B was by mild unblocking method plus warm unblocking method. The obesity-related indexes were observed before and after treatment, and the clinical efficacies were compared.Result The body weight and Body Mass Index (BMI) were significantly changed after intervention in the treatment group (P<0.05). The body weight was significantly changed after treatment in the control group (P<0.05). After treatment, there were no significant differences in comparing the obesity-related indexes (body weight, BMI, waist circumference, hip circumference, and waist-hip ratio) between the two groups (P>0.05). The total effective rate was 55.0% in the treatment group versus 10.0% in the control group, and the difference was statistically significant (P<0.01).Conclusion HE’s needling method is effective in treating mild simple obesity due to dampness from spleen deficiency, and mild unblocking method plus intensive unblocking method can produce a more significant efficacy compared to mild unblocking method plus warm unblocking method.

Objective To evaluate the sensitivity and specificity of different HbA1C cutoff points for diabetes diagnosis in high risk outpatients in Harbin.Methods A total of 2 122 high risk outpatients(male 1 032 and female 1 090)for diabetes screening in the Fourth affiliated Hospital of Harbin Medical University from April 2013 to February 2015 were included in this study, with the average age of(49.26±13.00)year. Oral glucose tolerance tests(OGTT)were conducted and HbA1C levels were examined in these patients. The sensitivity and specificity of different HbA1C cutoff points were calculated and a receiver operator characteristic(ROC)curve was then built.Results The average level of HbA1C in these subjects was(6.45±1.72)%. The prevalence of diabetes was 41.85%. The area under ROC curve(AUC)was 0.89 with the optimal cutoff point of HbA1C 6.0% and 0.68 for the highest Yonden index. The sensitivity and specificity of HbA1C 6.0% were 84.01% and 83.67% respectively. The sensitivity and specificity of HbA1C 6.5% were 62.84% and 95.92%, respectively. The AUC of HbA1C≥6.5% was 0.732. Conclusion HbA1C works well as the diagnostic standard for diabetes in high risk outpatients of Harbin city. The cutoff point of HbA1C 6.0% is suitable for screening diabetes in high risk population, and HbA1C 6.5% is appropriate for diabetes diagnosis, with high sensitivity and specificity.

Recently,plasma sterilization has attracted increasing attention in dental community for the atmospheric pressure non-equilibrium plasma jet (APNPs),which is driven by a kilohertz pulsed DC power,may be applied to the dental and oral diseases.However,it is still in doubt whether APNPs can effectively kill pathogenic bacteria in the oral cavity and produce no harmful effects on normal oral tissues,especially on normal mucosa.The aim of this study was to evaluate the bacterial-killing effect of APNPs in the biofilms containing a single breed of bacteria (Porphyromonas gingivalis,Pg.),and the pathological changes of the oral mucosa after treatment by APNPs.Pg.was incubated to form the biofilms in vitro,and the samples were divided into three groups randomly:group A (blank control);group B in which the biofilms were treated by APNPs (the setting of the equipment:10 kHz,1600 ns and 8 kV); group C in which the biofilms were exposed only to a gas jet without ignition of the plasma.Each group had three samples and each sample was processed for up to 5 min.The biofilms were then fluorescently stained,observed and photographed under a laser scanning confocal microscope.In the animal experiment,six male Japanese white rabbits were divided into two groups randomly (n=3 in each group) in terms of the different post-treatment time (1-day group and 5-day group).The buccal mucosa of the left side and the mucosa of the ventral surface of the tongue were treated by APNPs for 10 min in the same way as the bacterial biofilm experiment in each rabbit,and the corresponding mucosa of the other sides served as normal control.The clinical manifestations of the oral mucosa were observed and recorded every day.The rabbits were sacrificed one or five day(s) after APNPs treatment.The oral mucosa were harvested and prepared to haematoxylin and eosin-stained sections.Clinical observation and histopathological scores were used to assess mucosal changes.The results showed the obvious P.g.biofilms were formed at 10 days,and most of the bacteria in groups A and C were alive under a laser scanning confocal microscope,but the bacteria in the group B were almost all dead.In animal experiment,no ulcers,anabrosis and oral mucositis were found in both the 1-day and 5-day groups.The average mucous membrane irritation index was -0.83 and -0.67 in the 1-day and 5-day groups,respectively,suggesting that no intense mucosal membrane irritation responses occurred.It was concluded that APNPs could effectively kill P.g.in the biofilms and did not cause any pathological changes in the normal mucosa,suggesting that the plasma jet (APNPs) may be applied to oral diseases as a novel sterilization device in the future.

Objective:To explore the value of Glasgow coma score (GCS) combined with optic nerve sheath diameter (ONSD) in predicting the death risk of patients with cerebrocardiac syndrome (CCS).Methods:From January 2021 to September 2021, 83 patients with CCS secondary to severe traumatic brain injury (sTBI) in our hospital were collected and divided into a survival group ( n = 37) and death group ( n = 46) according to CCS-related death. The clinical data including age, sex, underlying diseases, head CT imaging manifestations, electrolytes, blood glucose, C-reactive protein (CRP), neuron-specific enolase (NSE), lactate dehydrogenase (LDH), creatine kinase (CK), creatine phosphokinase isoenzyme (CKMB), intracranial pressure (ICP), ONSD, cardiac color ultrasound, acute physiology and chronic health evaluationII (APACHEⅡ ) and GCS were analyzed and compared between the two groups. The proportion and dosage of vasoactive drugs used at admission, daily fluid balance volume during hospitalization, total amount of sedative and analgesic drugs, and average daily dose were analyzed and compared between the two groups. The independent risk factors for CCS-related death were analyzed using multivariate logistic regression. The receiver operating characteristic (ROC) curve was drawn to evaluate the predictive value of the independent risk factors in CCS-related death. Results:In this study, 55.4% of the patients died of CCS. The ONSD, ICP change rate, right ventricular Tei index and NSE in the death group were higher than those in the survival group, with statistically significant differences ( P < 0.05), while the GCS in the death group was significantly lower than that in the survival group, with a statistically significant difference ( P < 0.01). ONSD ( OR = 23.890, 95% CI: 5.526-103.286, P < 0.001), GCS ( OR = 17.066, 95% CI: 1.476-197.370, P = 0.023) and ICP change rate ( OR = 0.060, 95% CI: 0.007-0.477, P = 0.008) were the independent risk factors for CCS-related death. The area under the ROC curve (AUC = 0.897) of ONSD combined with GCS in evaluating CCS-related death was larger than that of ONSD, ICP change rate alone and the corresponding AUC of 1/GCS (0.876, 0.785, 0.800, respectively), with the advantages of non-invasive, dynamic monitoring and low inspection costs. Conclusions:The mortality rate of CCS is high. ONSD, GCS and ICP change rates are independently correlated with the death of CCS patients. ONSD combined with GCS is an ideal indicator for clinical prediction of CCS-related death.