Objective:To explore the application value of cone-beam computed tomography(CBCT)measurement in morphological change of alveolar bone of patients with malocclusion of osseous class Ⅲ after orthodontic treatment.Methods:A total of 50 patients with malocclusion of osseous class Ⅲ after received orthodontic treatment in Wuxi Stomatology Hospital from January 2020 to December 20203 were selected,and they were included in the treatment group,and 50 patients with same condition who did not receive orthodontic treatment in the same period were included in the control group.The height,width and density of alveolar bone of two groups,as well as the bone density surrounding the tooth root,the tooth inclination,the movement distance of tooth,and the CBCT images between before and after treatment,were compared.Results:The heights of long to medium(5.89±0.25)mm,near to medium(5.48±0.11)mm,cheek side(6.37±0.31)mm and tongue side(6.12±0.28)mm of treatment group were all higher than those[(5.23±0.12)mm,(5.11±0.08)mm,(6.01±0.17)mm and(5.79±0.15)mm]of control group,and the differences of them between two groups were significant(t=16.829,19.235,7.200,7.346,P<0.05),respectively.The widths of alveolar bones of tooth root and nasal base of treatment group were all higher than those of control group,and the differences of them between two groups were significant(t=23.566,26.785,P<0.05),respectively.The alveolar bone density and the density surrounding tooth root of treatment group were all higher than those of control group,and the differences of them between two groups were significant(t=6.470,6.042,P<0.05),respectively.The inclinations of upper and lower incisors of treatment group were all higher than those of control group,and the differences of them between two groups were significant(t=3.710,160.815,P<0.05),respectively.The horizontal movement,vertical movement,internal and external movement,and rotational distance of the teeth of treatment group were all larger than those of control group,and the differences of them were significant(t=62.757,115.000,75.000,5.728,P<0.05),respectively.Conclusion:CBCT measurement is of great significance and function during orthodontic treatment,which can realize careful observation and accurate quantitative analysis of alveolar bone morphology changes.

Objective:To investigate the application effect of propofol combined with remifentanil for anesthesia in children undergoing plasma adenoidectomy.Methods:Clinical data of 103 children who underwent plasma adenoidectomy in our hospital from Apr 2023 to Apr 2024 were retrospectively analyzed.Children were divided into two groups according to different anesthesia schemes.Children who received propofol+ketamine anesthesia were enrolled in the control group(n=52)and children who received propofol+remifentanil anesthesia were enrolled in the study group(n=51).Hemodynamic parameters were compared between the two groups at four time points:before anesthesia(T0),immediately after extubation(T1),5 minutes after extubation(T2),and 10 minutes after extubation(T3).The pain scores(CHIPPS)of the two groups were compared at 10,20,and 30 min after extubation.Post-anesthesia evaluation of discomfort(PAED)and incidence of restlessness during recovery in children were compared.The indicators of stress response(cortisol and epinephrine)were measured preoperatively and 1 day postoperatively.Total perioperative adverse events were analyzed.Results:The recovery times for spontaneous breathing,eye-opening,and extubation in the study group were shorter than those in the control group(P＜0.05).The heart rate and mean arterial pressure level in the study group at T1-T3 were lower than those in the control group(P＜0.05).The CHIPPS scores at 10,20,and 30 min after extubation and PAED scores during the recovery period in the study group were lower than those in the control group(P＜0.05).The incidence of restlessness during the recovery period in the study group was lower than that in the control group(P＜0.05).The levels of cortisol and epinephrine in the study group were lower than those in the control group on day 1 after surgery(P＜0.05).There was no significant difference in the overall incidence of adverse reactions between the two groups(P＞0.05).Conclusion:The use of propofol combined with remifentanil in plasma adenoidectomy can effectively shorten the recovery time of anesthesia in children,enhance analgesic effects,reduce blood circulation fluctuations and stress reactions,and reduce the incidence of restlessness,with reliable safety.

Objective:To investigate the application effect of propofol combined with remifentanil for anesthesia in children undergoing plasma adenoidectomy.Methods:Clinical data of 103 children who underwent plasma adenoidectomy in our hospital from Apr 2023 to Apr 2024 were retrospectively analyzed.Children were divided into two groups according to different anesthesia schemes.Children who received propofol+ketamine anesthesia were enrolled in the control group(n=52)and children who received propofol+remifentanil anesthesia were enrolled in the study group(n=51).Hemodynamic parameters were compared between the two groups at four time points:before anesthesia(T0),immediately after extubation(T1),5 minutes after extubation(T2),and 10 minutes after extubation(T3).The pain scores(CHIPPS)of the two groups were compared at 10,20,and 30 min after extubation.Post-anesthesia evaluation of discomfort(PAED)and incidence of restlessness during recovery in children were compared.The indicators of stress response(cortisol and epinephrine)were measured preoperatively and 1 day postoperatively.Total perioperative adverse events were analyzed.Results:The recovery times for spontaneous breathing,eye-opening,and extubation in the study group were shorter than those in the control group(P＜0.05).The heart rate and mean arterial pressure level in the study group at T1-T3 were lower than those in the control group(P＜0.05).The CHIPPS scores at 10,20,and 30 min after extubation and PAED scores during the recovery period in the study group were lower than those in the control group(P＜0.05).The incidence of restlessness during the recovery period in the study group was lower than that in the control group(P＜0.05).The levels of cortisol and epinephrine in the study group were lower than those in the control group on day 1 after surgery(P＜0.05).There was no significant difference in the overall incidence of adverse reactions between the two groups(P＞0.05).Conclusion:The use of propofol combined with remifentanil in plasma adenoidectomy can effectively shorten the recovery time of anesthesia in children,enhance analgesic effects,reduce blood circulation fluctuations and stress reactions,and reduce the incidence of restlessness,with reliable safety.

Objective:To explore the application value of cone-beam computed tomography(CBCT)measurement in morphological change of alveolar bone of patients with malocclusion of osseous class Ⅲ after orthodontic treatment.Methods:A total of 50 patients with malocclusion of osseous class Ⅲ after received orthodontic treatment in Wuxi Stomatology Hospital from January 2020 to December 20203 were selected,and they were included in the treatment group,and 50 patients with same condition who did not receive orthodontic treatment in the same period were included in the control group.The height,width and density of alveolar bone of two groups,as well as the bone density surrounding the tooth root,the tooth inclination,the movement distance of tooth,and the CBCT images between before and after treatment,were compared.Results:The heights of long to medium(5.89±0.25)mm,near to medium(5.48±0.11)mm,cheek side(6.37±0.31)mm and tongue side(6.12±0.28)mm of treatment group were all higher than those[(5.23±0.12)mm,(5.11±0.08)mm,(6.01±0.17)mm and(5.79±0.15)mm]of control group,and the differences of them between two groups were significant(t=16.829,19.235,7.200,7.346,P<0.05),respectively.The widths of alveolar bones of tooth root and nasal base of treatment group were all higher than those of control group,and the differences of them between two groups were significant(t=23.566,26.785,P<0.05),respectively.The alveolar bone density and the density surrounding tooth root of treatment group were all higher than those of control group,and the differences of them between two groups were significant(t=6.470,6.042,P<0.05),respectively.The inclinations of upper and lower incisors of treatment group were all higher than those of control group,and the differences of them between two groups were significant(t=3.710,160.815,P<0.05),respectively.The horizontal movement,vertical movement,internal and external movement,and rotational distance of the teeth of treatment group were all larger than those of control group,and the differences of them were significant(t=62.757,115.000,75.000,5.728,P<0.05),respectively.Conclusion:CBCT measurement is of great significance and function during orthodontic treatment,which can realize careful observation and accurate quantitative analysis of alveolar bone morphology changes.

Objective:To explore the diagnostic value of laparoscopy in the postoperative recurrence of peritoneal metastasis in gastric cancer, and to investigate the efficacy of bidirectional intraperitoneal and systemic (BIPS) chemotherapy for the recurrence.Methods:The descriptive case series study was conducted. Case inclusion criteria: (1) gastric cancer patients without synchronous distant metastasis received D2 radical gastrectomy; (2) postoperative adjuvant chemotherapy was administered; (3) no other distant metastasis except recurrence of peritoneal metastasis; (4) age of 18-75 years; (5) Eastern Cooperative Oncology Group (ECOG) performance-status score≤2; (6) pretreatment evaluation suggested that surgery and chemotherapy could be tolerated. Eight consecutive gastric cancer patients with postoperative recurrence of peritoneal metastasis who met the above criteria at Department of Gastrointestinal Surgery of Ruijin Hospital from September 2015 to September 2016 were enrolled into the study. There were 6 males and 2 females with the median age of 52 (38-68) years. They received laparoscopy or laparotomy first, and then were evaluated with reference to the Sugarbaker peritoneal cancer index (PCI) and the peritoneal metastasis classification of gastric cancer developed by the Japanese Gastric Cancer Research Association. A peritoneal access port was implanted in the subcutaneous space of the lower abdomen and the patients received chemotherapy for 21 days as a course of treatment. All the patients received intraperitoneal 20 mg/m 2 of paclitaxel (PTX) via implanted subcutaneous peritoneal access ports and intravenous 50 mg/m 2 of PTX at day 1 and day 8, meanwhile 80 mg/m 2 of Tigio was orally administered per day for 14 consecutive days, followed by 7 days of interval. Follow-up ended on December 15, 2019. Results:Of these 8 patients with recurrence of peritoneal metastasis after gastric cancer surgery, 1 case underwent laparotomy and loop stoma of terminal ileum because of complete colonic obstruction, and the remaining 7 cases underwent laparoscopy successfully and the recurrence of peritoneal metastasis was clearly diagnosed. Two patients with ovarian metastasis underwent laparoscopic bilateral adnexectomy. The median follow-up time was 17.5 (1.5 to 39.0) months, the median number of BIPS chemotherapy course was 11 (1 to 30), and the median survival time (MST) after BIPS chemotherapy was 17.0 months. The major adverse reaction in BIPS treatment was mainly myelosuppression, of which grade 3/4 leukopenia and neutropenia developed in 1 and 2 cases respectively. No BIPS-related death occurred. The MST of gastric cancer after radical gastrectomy was 40.0 months.Conclusions:Laparoscopy is a safe and feasible method for diagnosing the recurrence of peritoneal metastasis of gastric cancer. BIPS chemotherapy is effective and safe for its treatment and deserves further study.

Objective:To explore the diagnostic value of laparoscopy in the postoperative recurrence of peritoneal metastasis in gastric cancer, and to investigate the efficacy of bidirectional intraperitoneal and systemic (BIPS) chemotherapy for the recurrence.Methods:The descriptive case series study was conducted. Case inclusion criteria: (1) gastric cancer patients without synchronous distant metastasis received D2 radical gastrectomy; (2) postoperative adjuvant chemotherapy was administered; (3) no other distant metastasis except recurrence of peritoneal metastasis; (4) age of 18-75 years; (5) Eastern Cooperative Oncology Group (ECOG) performance-status score≤2; (6) pretreatment evaluation suggested that surgery and chemotherapy could be tolerated. Eight consecutive gastric cancer patients with postoperative recurrence of peritoneal metastasis who met the above criteria at Department of Gastrointestinal Surgery of Ruijin Hospital from September 2015 to September 2016 were enrolled into the study. There were 6 males and 2 females with the median age of 52 (38-68) years. They received laparoscopy or laparotomy first, and then were evaluated with reference to the Sugarbaker peritoneal cancer index (PCI) and the peritoneal metastasis classification of gastric cancer developed by the Japanese Gastric Cancer Research Association. A peritoneal access port was implanted in the subcutaneous space of the lower abdomen and the patients received chemotherapy for 21 days as a course of treatment. All the patients received intraperitoneal 20 mg/m 2 of paclitaxel (PTX) via implanted subcutaneous peritoneal access ports and intravenous 50 mg/m 2 of PTX at day 1 and day 8, meanwhile 80 mg/m 2 of Tigio was orally administered per day for 14 consecutive days, followed by 7 days of interval. Follow-up ended on December 15, 2019. Results:Of these 8 patients with recurrence of peritoneal metastasis after gastric cancer surgery, 1 case underwent laparotomy and loop stoma of terminal ileum because of complete colonic obstruction, and the remaining 7 cases underwent laparoscopy successfully and the recurrence of peritoneal metastasis was clearly diagnosed. Two patients with ovarian metastasis underwent laparoscopic bilateral adnexectomy. The median follow-up time was 17.5 (1.5 to 39.0) months, the median number of BIPS chemotherapy course was 11 (1 to 30), and the median survival time (MST) after BIPS chemotherapy was 17.0 months. The major adverse reaction in BIPS treatment was mainly myelosuppression, of which grade 3/4 leukopenia and neutropenia developed in 1 and 2 cases respectively. No BIPS-related death occurred. The MST of gastric cancer after radical gastrectomy was 40.0 months.Conclusions:Laparoscopy is a safe and feasible method for diagnosing the recurrence of peritoneal metastasis of gastric cancer. BIPS chemotherapy is effective and safe for its treatment and deserves further study.

Objective: To investigate the differences of clinicopathological features, diagnosis, treatment and prognosis between patients with extra-gastrointestinal stromal tumors (EGIST) and duodenal gastrointestinal stromal tumors (DGIST). Methods: A retrospective case - control study was performed. Case inclusion criteria: (1) tumor confirmed by histology and pathology; (2) primary tumor locating in the extra - gastrointestinal tract or duodenum; (3) without other synchronous tumors; (4) complete clinical and pathological data. Clinical data of 20 EGIST patients and 32 DGIST patients from March 2011 to September 2016 at Department of Gastrointestinal Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine were retrospectively collected and analyzed. The observational parameters included clinicopathological characteristics, treatment and prognosis conditions. Continuous data of abnormal distribution were expressed as median (range) and compared using the Mann-Whitney U-test. Survival curves were drawn by the Kaplan-Meier method and compared with the Log-rank test. Results: Of the 20 EGIST patients, 8 were males and 12 were females with age of 61.0 (30.0 to 86.0) years and of the 32 DGIST patients, 12 were males and 20 were females with age of 55.5 (27.0 to 70.0) years. Compared with DGIST patients, EGIST patients were older (U=188.000, P=0.012], had larger tumor size [10.0 (3.0 to 29.0) cm vs. 4.0 (1.5 to 10.0) cm, U=98.500, P<0.001] and higher ratio of high risk classification [85.0% (17/20) vs. 12.5% (4/32), χ²=26.870, P<0.001]. Among the 20 EGIST patients, 5 were diagnosed with distal metastasis and received imatinib (400 mg/d), and the other 15 patients underwent radical resection who were included in survival analysis. All the 32 DGIST patients underwent radical resection. The median follow-up of whole group was 43 (14 to 76) months. The 3-year recurrence/metastasis-free survival rate of 15 cases undergoing radical resection in the EGIST group was 85.6%, which was lower than that of the DGIST group (88.6%), and the difference was not statistically significant (P=0.745). There was no significant difference in the 3-year overall survival rate between the EGIST group (92.9%) and the DGIST group (100%) (P=0.271). Conclusions As compared to DGIST, EGIST mostly occurs in those with older age, larger tumor size and higher risk grade. The prognosis of EGIST patients after radical resection is similar to that of DGIST patients.

Objective To investigate the differences of clinicopathological features, diagnosis, treatment and prognosis between patients with extra?gastrointestinal stromal tumors (EGIST) and duodenal gastrointestinal stromal tumors (DGIST). Methods A retrospective case?control study was performed. Case inclusion criteria: (1) tumor confirmed by histology and pathology; (2) primary tumor locating in the extra?gastrointestinal tract or duodenum; (3) without other synchronous tumors; (4) complete clinical and pathological data. Clinical data of 20 EGIST patients and 32 DGIST patients from March 2011 to September 2016 at Department of Gastrointestinal Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine were retrospectively collected and analyzed. The observational parameters included clinicopathological characteristics, treatment and prognosis conditions. Continuous data of abnormal distribution were expressed as median (range) and compared using the Mann?Whitney U?test. Survival curves were drawn by the Kaplan?Meier method and compared with the Log?rank test. Results Of the 20 EGIST patients, 8 were males and 12 were females with age of 61.0 (30.0 to 86.0) years and of the 32 DGIST patients, 12 were males and 20 were females with age of 55.5 (27.0 to 70.0) years. Compared with DGIST patients, EGIST patients were older (U=188.000, P=0.012], had larger tumor size [10.0 (3.0 to 29.0) cm vs. 4.0 (1.5 to 10.0) cm, U=98.500, P<0.001] and higher ratio of high risk classification [85.0% (17/20) vs. 12.5% (4/32), χ2=26.870, P<0.001]. Among the 20 EGIST patients, 5 were diagnosed with distal metastasis and received imatinib (400 mg/d), and the other 15 patients underwent radical resection who were included in survival analysis. All the 32 DGIST patients underwent radical resection. The median follow?up of whole group was 43 (14 to 76) months. The 3?year recurrence/metastasis?free survival rate of 15 cases undergoing radical resection in the EGIST group was 85.6%, which was lower than that of the DGIST group (88.6%), and the difference was not statistically significant (P=0.745). There was no significant difference in the 3?year overall survival rate between the EGIST group (92.9%) and the DGIST group (100%) (P=0.271). Conclusions As compared to DGIST, EGIST mostly occurs in those with older age, larger tumor size and higher risk grade. The prognosis of EGIST patients after radical resection is similar to that of DGIST patients.

Objective To investigate the differences of clinicopathological features, diagnosis, treatment and prognosis between patients with extra?gastrointestinal stromal tumors (EGIST) and duodenal gastrointestinal stromal tumors (DGIST). Methods A retrospective case?control study was performed. Case inclusion criteria: (1) tumor confirmed by histology and pathology; (2) primary tumor locating in the extra?gastrointestinal tract or duodenum; (3) without other synchronous tumors; (4) complete clinical and pathological data. Clinical data of 20 EGIST patients and 32 DGIST patients from March 2011 to September 2016 at Department of Gastrointestinal Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine were retrospectively collected and analyzed. The observational parameters included clinicopathological characteristics, treatment and prognosis conditions. Continuous data of abnormal distribution were expressed as median (range) and compared using the Mann?Whitney U?test. Survival curves were drawn by the Kaplan?Meier method and compared with the Log?rank test. Results Of the 20 EGIST patients, 8 were males and 12 were females with age of 61.0 (30.0 to 86.0) years and of the 32 DGIST patients, 12 were males and 20 were females with age of 55.5 (27.0 to 70.0) years. Compared with DGIST patients, EGIST patients were older (U=188.000, P=0.012], had larger tumor size [10.0 (3.0 to 29.0) cm vs. 4.0 (1.5 to 10.0) cm, U=98.500, P<0.001] and higher ratio of high risk classification [85.0% (17/20) vs. 12.5% (4/32), χ2=26.870, P<0.001]. Among the 20 EGIST patients, 5 were diagnosed with distal metastasis and received imatinib (400 mg/d), and the other 15 patients underwent radical resection who were included in survival analysis. All the 32 DGIST patients underwent radical resection. The median follow?up of whole group was 43 (14 to 76) months. The 3?year recurrence/metastasis?free survival rate of 15 cases undergoing radical resection in the EGIST group was 85.6%, which was lower than that of the DGIST group (88.6%), and the difference was not statistically significant (P=0.745). There was no significant difference in the 3?year overall survival rate between the EGIST group (92.9%) and the DGIST group (100%) (P=0.271). Conclusions As compared to DGIST, EGIST mostly occurs in those with older age, larger tumor size and higher risk grade. The prognosis of EGIST patients after radical resection is similar to that of DGIST patients.

Objective: To investigate the prevalence of work-related musculoskeletal disorders (WMSDs) among sonographers in a province of China and influencing factors for WMSDs, and to provide a practical basis for the prevention and treatment of WMSDs in sonographers. Methods: From November 2016 to February 2017, stratified cluster sampling was used to select 700 sonographers from 50 hospitals in this province. A self-designed questionnaire for WMSDs in sonographers was used to investigate general data and the prevalence of WMSDs, and the influencing factors for the prevalence of WMSDs were analyzed. Results: The prevalence rate of WMSDs among these sonographers was 80.22%, and the prevalence rates of WMSDs in the shoulder, the neck, the waist, the back, the wrist, the elbow, the hip, the knee, and the ankle were 74.55%, 68.87%, 63.44%, 57.26%, 53.16%, 45.22%, 37.88%, 30.44%, and 29.24%, respectively. There was a significant difference in the prevalence rate of WMSDs between the sonographers with different ages and working years, and the prevalence rate of WMSDs tended to increase with the increase in age and working years (χ²=20.86 and 18.52, P<0.01) . The multivariate logistic regression analysis showed that female sex (odds ratio [OR]=1.798) , working years >16 (OR=1.004) , weekly working hours >40 (OR=1.616) , poor physical conditions (OR=1.690) , and high work fatigue (OR=1.302) were risk factors for WMSDs in sonographers. Conclusion There are high prevalence rates of WMSDs in the shoulder, the neck, the waist, the back, the wrist, and the elbow. Sonographers should strengthen self-protection awareness, and effective preventive measures should be adopted to reduce the prevalence rate of WMSDs.