Objective To investigate the current infection situation of Chlamydia trachomatis (CT) and Ureaplasma urealyticum (Uu) in patients with cervical erosion .Methods CT and Uu were detected in cervical secretions of 562 cases of cervical erosion pa‐tients (observation group) and 218 healthy controls (control group) .Drug susceptibility testing was performed for the patients with Uu infection .Results Positive rate of CT ,Uu and mixed infection was 20 .11% ,42 .35% and 9 .61% ,higher than those of control group (P<0 .05) .The difference of the positive rate between moderate cervical erosion and severe cervical erosion was not signifi‐cant (P>0 .05) ,while the positive rate of CT ,Uu and mixed infection was significantly different between the two groups and mild cervical erosion (P<0 .05) .The highest susceptibility rate of Uu to antimicrobial agents was josamycin (91 .78% ) ,followed by pristinamycin (84 .25% ) .The highest resistant rate of Uu was to ciprofloxacin (85 .96% ) ,followed by ofloxacin(73 .29% ) .Conclu‐sion The infection of CT and Uu could be intimate correlated with cervical erosion and the extent of erosion .Varying degrees of drug resistance of Uu could be found ,and the sensitive and effective antibiotics should be chosen to treat cervical erosion infection of Uu .

Objective:To explore the influence of expander injection port placement on complications of retroauricular soft tissue expander implantation and put forward the corresponding treatment countermeasures.Methods:Data of the patients with congenital microtia or acquired ear defects who were treated in the Department of Plastic Surgery of Sun Yat-sen Memorial Hospital from January 2016 to August 2022 were retrospectively analyzed. All patients underwent ear reconstruction with skin expansion. According to the placement of the expander injection port in the operation, all patients were divided into the group of internal expander injection port (referred to as the internal group) and the group of external expander injection port (referred to as the external group). After the operation, patients of these two groups underwent skin expansion. The general information of the local region and the occurrence of related complications were observed in both groups. Chi-square test was used for statistical analysis.Results:A total of 51 patients were included in this study, including 42 males and 9 females, with an average age of 13.1 years from 5 years old to 43 years old. There were 19 cases of left side, 31 cases of right side, 1 case of both sides. There were 21 cases in the internal group and 30 cases in the external group. There were 19 patients in total who suffered complications such as hematoma, infection, ischemic necrosis of the flap, expander exposure and expander damage. Complications occurred in 6 cases in the internal group, i. e., hematoma in 3 cases and expander exposure in 3 cases. And complications occurred in 13 patients in the external group, including hematoma in 5 cases, infection in 2 cases, expander damage in 1 case, hematoma combined infection in 2 cases, infection combined expander exposure in 1 case, ischemic necrosis of the flap combined expander exposure in 1 case and hematoma combined ischemic necrosis of the flap and expander exposure in 1 case. Patients with all the above-mentioned complications received the second-stage auricle reconstruction surgery on schedule or ahead of schedule after treatment of the complications, and the postoperative effect was good. The incidence of infection was higher in the external group[28.57%(6/21)vs.43.33%(13/30)], and there were significant differences in the incidence of infection between the two groups ( χ2=3.88, P<0.05), but no significant differences in hematoma ( χ2=1.12, P>0.05), ischemic necrosis of the flap ( χ2=1.46, P>0.05), expander exposure ( χ2=0.22, P>0.05) or expander damage ( χ2=0.71, P>0.05). Conclusion:External expander injection port can increase the incidence of postoperative infection. The expander injection port placement does not significantly influence on the incidence of complications such as hematoma, ischemic necrosis of the flap, expander exposure and expander damage. However, the characteristics of these complications in the two kinds of injection port placement are different, and there are some differences in their treatment countermeasures.

Objective:To explore the influence of expander injection port placement on complications of retroauricular soft tissue expander implantation and put forward the corresponding treatment countermeasures.Methods:Data of the patients with congenital microtia or acquired ear defects who were treated in the Department of Plastic Surgery of Sun Yat-sen Memorial Hospital from January 2016 to August 2022 were retrospectively analyzed. All patients underwent ear reconstruction with skin expansion. According to the placement of the expander injection port in the operation, all patients were divided into the group of internal expander injection port (referred to as the internal group) and the group of external expander injection port (referred to as the external group). After the operation, patients of these two groups underwent skin expansion. The general information of the local region and the occurrence of related complications were observed in both groups. Chi-square test was used for statistical analysis.Results:A total of 51 patients were included in this study, including 42 males and 9 females, with an average age of 13.1 years from 5 years old to 43 years old. There were 19 cases of left side, 31 cases of right side, 1 case of both sides. There were 21 cases in the internal group and 30 cases in the external group. There were 19 patients in total who suffered complications such as hematoma, infection, ischemic necrosis of the flap, expander exposure and expander damage. Complications occurred in 6 cases in the internal group, i. e., hematoma in 3 cases and expander exposure in 3 cases. And complications occurred in 13 patients in the external group, including hematoma in 5 cases, infection in 2 cases, expander damage in 1 case, hematoma combined infection in 2 cases, infection combined expander exposure in 1 case, ischemic necrosis of the flap combined expander exposure in 1 case and hematoma combined ischemic necrosis of the flap and expander exposure in 1 case. Patients with all the above-mentioned complications received the second-stage auricle reconstruction surgery on schedule or ahead of schedule after treatment of the complications, and the postoperative effect was good. The incidence of infection was higher in the external group[28.57%(6/21)vs.43.33%(13/30)], and there were significant differences in the incidence of infection between the two groups ( χ2=3.88, P<0.05), but no significant differences in hematoma ( χ2=1.12, P>0.05), ischemic necrosis of the flap ( χ2=1.46, P>0.05), expander exposure ( χ2=0.22, P>0.05) or expander damage ( χ2=0.71, P>0.05). Conclusion:External expander injection port can increase the incidence of postoperative infection. The expander injection port placement does not significantly influence on the incidence of complications such as hematoma, ischemic necrosis of the flap, expander exposure and expander damage. However, the characteristics of these complications in the two kinds of injection port placement are different, and there are some differences in their treatment countermeasures.

Objective:To investigate the factors associated with complications following the implantation of external-expansion devices with an injection port.Methods:A retrospective study was conducted, including 68 patients who underwent expansion device implantation at the Department of Plastic Surgery, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, from January 2019 to May 2022 and the patients experienced postoperative complications (case group). Additionally, 195 patients who underwent the same procedure during the same period but did not experience complications were selected as control group, following a 1∶3 ratio. Preoperatively, different shapes and sizes of expansion devices were chosen according to the lesion location and area. Observational indicators included admission diagnosis, preoperative white blood cell count, preoperative hemoglobin count, gender, age, implantation site of the expander, season of admission, and duration of postoperative drainage tube placement. Univariate and multivariate logistic regression analyses were used to analyze factors associated with postoperative complications.Results:Univariate logistic regression analysis revealed that implantation at the trunk ( OR=0.439, 95% CI: 0.207-0.901, P=0.028), admission diagnosis of microtia ( OR=4.155, 95% CI: 1.735-10.206, P=0.001), and admission season from April to September ( OR=3.269, 95% CI: 1.819-6.073, P<0.001) were associated with complications following expansion device implantation. Multivariate logistic regression analysis showed that admission season from April to September ( OR=3.272, 95% CI: 1.796-6.156, P<0.001) was a significant factor associated with postoperative complications. Conclusion:Implantation site at the trunk, admission diagnosed with microtia, and admission season from April to September are the factors associated with complications following expansion device implantation.