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6%). The proportion of confirmed cases in autumn and winter was relatively high. During the study period, the proportion of infected persons found in custom entry quarantine decreased, and the proportion of persons with personal health declaration and under medical isolation observation increased. The interval between entry and diagnosis of infected persons tended to increase. Conclusion The proportion of imported COVID-19 cases detected on the first day of entry at Tianjin airport decreased, and the interval to detect the infected persons trended to increase, to which close attention must be paid.Objective To compare the immunogenicity and safety of an inactivated SARS-CoV-2 vaccine used for the vaccination in public security officers with different immunization schedules. Methods From January to February, 2021, 405 public security officers in Taiyuan were randomly divided into 3 groups. Two doses of SARS-CoV-2 inactivated vaccine were injected according to the immunization schedule of 0-14 days, 0-21 days or 0-28 days, respectively. The nucleic acid of SARS-CoV-2 was detected by reverse transcription polymerase chain reaction. The neutralizing antibodies to SARS-CoV-2 were tested by microdose cytopathogenic efficiency assay of live virus. The GMT, seroconversion rate of SARS-CoV-2 neutralizing antibody and safety of the vaccine were analyzed for the 3 groups. Results The seroconversion rate of SARS-CoV-2 neutralizing antibody was 100% in all the 3 groups. The SARS-CoV-2 neutralizing antibody level of 0-21 day group [166.70 (95%CI 148.30-185.10)] was similar to that of 0-28 day group [179.50 (95%CI 156.50-202.60)] (P>0.05), significantly higher than that of 0-14 day group [86.08 (95%CI 72.36-99.80)] (P less then 0.001). The incidence rates of adverse reaction in the 3 groups were 1.48% (2/135), 0.74% (1/136) and 1.49% (2/134) respectively (P=0.750), all the adverse reactions were mild. Conclusions The vaccination of inactivated SARS-CoV-2 vaccine with different immunization schedules in public security officers showed good safety and high seroconversion rate, and the GMTs of SARS-CoV-2 neutralizing antibody in 0-21 day group and 0-28 day group were higher than that in 0-14 day group.Objective To investigate the impact of body mass index (BMI) on clinical effect and fresh cycle embryo transfer pregnancy outcome of in vitro fertilization or intracytoplasmic sperm injection (IVF/ICSI) in patients with early follicular phase prolonged protocol. Methods From January 1st, 2018 to July 1st, 2020, 2 257 cases of early follicular long-term protocol in IVF/ICSI and embryo transfer were collected using the clinical assisted reproductive technologies management system software database of the First Affiliated Hospital of Nanjing Medical University. Patients were divided into three groups according to the recommended Asian BMI cut-off points low body mass group (BMI0.05). Conclusions Increased BMI might affect ovulation induction response in early follicular phase prolonged protocol IVF/ICSI patients, leading to the increase of Gn dosage and the extension of Gn induction days. Although there is no significant difference in pregnancy outcome among different BMI groups, considering the increased risk of adverse perinatal outcomes during subsequent pregnancy in overweight or obese patients, certain attention should still be paid to the control of BMI in patients receiving assisted reproduction treatment with early follicular phase prolonged protocol.Objective To investigate the effect of placenta previa attached to cesarean scar for adverse pregnant outcomes in patients with or without placenta accreta spectrum disorders (PAS). Methods The clinical information of patients with cesarean section history and placenta previa during the perioperative period at Peking University First Hospital from January 1st, 2015 to December 31st, 2020 were collected retrospectively. There were 53 cases without PAS and 172 cases with PAS, 153 cases with abnormally invasive placenta (containing placenta increta and placenta percreta) and 72 cases without PAS or with placenta accreta. The pregnant outcomes including rate of postpartum hemorrhage, transfusion, hysterectomy between the above groups were compared. Multivariate analysis was performed to study the factors significantly associated with PAS. Results Pregnant women with PAS were at higher risk of adverse pregnant outcomes than those without PAS. Patients with PAS had higher incidences of hysterectomy [12.2% (21/172) vs 0(0/53); P=0.005], postpartum hemorrhage [60.5% (104/172) vs 5.7% (3/53); P0.01). Conclusions Placenta previa attached to cesarean scar without PAS or with placenta accreta could not act as the factor of predicting adverse pregnant outcomes in clinic. Placenta previa attached to cesarean scar with placenta increta or placenta percreta could increase the risk of adverse pregnant outcomes.Objective To investigate the relationship between embryo implantation site and adenomyotic lesions in pregnant patients with adenomyosis and its effects on pregnancy outcomes. Methods Between January 2018 and December 2020, the clinical data of 95 pregnant patients with adenomyosis who were hospitalized in the Women's Hospital, School of Medicine, Zhejiang University, which could identify the implantation site of embryo or placenta (≥11 weeks of pregnancy) through the nuchal translucency test under ultrasonography were analyzed retrospectively. According to the relationship between embryo implantation site and adenomyotic lesions, 95 patients were divided into two groupsshort-distance group (n=59, the embryo or placenta implantation was very close to or over the adenomyotic lesion), and long-distance group (n=36, the implantation site of embryo or placenta was far away from the lesion, or the implantation site and the adenomyotic lesion were on different sides of the uterus). Next, taking 28 weeks of pregnancand 35 cases in the long-distance group), and their final pregnancy outcome was all live birth. Compared with the long-distance group, the incidence of placental abnormalities (60% vs 14%), fetal distress (27% vs 6%), preterm delivery (67% vs 23%) and intrapartum bleeding [median 350 ml (range 100-1 500 ml) vs 300 ml (range 100-800 ml)] in the short-distance group were significantly higher (all P less then 0.05). While the gestational weeks in the short-distance group [median 37 weeks (range 30-41 weeks) vs 38 weeks (range 28-41 weeks)] and neonatal birth weight [median 2 790 g (range 1 170-4 040 g) vs 3 010 g (range 980-4 320 g)] decreased significantly (all P less then 0.05), compared with those in the long-distance group. Conclusion Patients with pregnancy complicated with adenomyosis are prone to adverse pregnancy outcomes if the embryo implantation is located on or very close to adenomyotic lesions, so close monitoring and early intervention should be carried out to improve pregnancy outcomes.Objective To investigate the feasibility, effectiveness and safety of indocyanine green (ICG) navigation in the surgical resection of abdominal wall endometriosis (AWE). Methods Seven women undergoing surgery for AWE in First Affiliated Hospital of Sun Yat-sen University (from July 1, 2021 to October 1, 2021) were collected. After exposure of the focus, ICG were used intravenously (0.25 mg/kg) as fluorescent dye for the intraoperative evaluation of AWE vascularization. Resection of the AWE was guided by direct visualization of the focus under standard laparoscopy with a near-infrared (NIR) camera head. Surgical margin around the AWE (3, 6, 9 and 12 point) and the margin under the focus were obtained for postoperative pathological examination of endometriosis. Time from injection to fluorescence visualization, the proportion of fluorescence visualization, time of fully resection of AWE, side effects related to the use of ICG, perioperative complications as well as the pathological result of the surgical margins were recorded. Results ICG fluorescence of the AWE were seen in 5 patients (5/7). The mean time from injection to fluorescence visualization was (46.7±9.8) s. The mean time of fully resection of AWE was (16.4±7.0) minutes. RO4987655 There were no side effects related to the use of ICG. The rate of class-A wound healing was 7/7. All of the surgical margins were confirmed endometriosis-negative by postoperative pathological examination. Conclusion ICG fluorescence visualization could conduct accurate resection of AWE, which is clinically safe and effective.Objective To investigate the clinical features and long-term prognosis of patients co-existing with ovarian endometrioma (OMA) and deep infiltrating endometriosis (DIE). Methods Totally 358 OMA patients were retrospectively analyzed, who had a minimum of 8 years follow-up after laparoscopic cystectomy, which was performed by one professional endometriosis surgery team at Peking Union Medical College Hospital from January 2009 to April 2013. All women were divided into DIE group and non-DIE group, and analysis was performed in preoperative characteristics, surgical findings and postoperative outcomes during follow-up. Results A total of 358 OMA patients were included, of which 190 patients (53.1%, 190/358) were in the DIE group, while other 168 patients (46.9%, 168/358) in the non-DIE group. The average ages between the two groups were (33.7±5.4), (32.5±5.3) years (P=0.047), the average parity was (0.4±0.6) times vs (0.3±0.5) times (P=0.079). There were significant differences in the proportions of moderate toyst was 10.7% (18/168). There were no significant differences in the pain recurrence rate (P=0.067) and cyst recurrence rate (P=0.460) between the two groups. As for the successfully pregnant patients, live birth rates were 100.0% (65/65) vs 94.4% (68/72) between DIE group and non-DIE groups (P=0.120). Conclusions Compared with the non-DIE group, OMA patients with concurrent DIE might have severe pain symptoms, higher probability of abnormal CA125 levels and more severe pelvic adhesions. Although there are no significant differences in the total recurrence rate and the recurrence rate of various types between the two groups, the proportion of pain recurrence in the DIE group is higher than that in the non-DIE group. In terms of fertility outcomes, patients in the DIE group are with lower likelihood of pregnancy after surgery during the long-time follow-up. DIE has no significant influence on the fertility outcome.Objective To investigate the diagnosis, treatment and prognosis of ureteral endometriosis with hydronephrosis. Methods A retrospective study was performed of 92 cases diagnosed as ureteral endometriosis with surgery confirmed in Peking University First Hospital from January 2000 to January 2021. Results The incidence of ureteral endometriosis was 0.9% (92/10 222), with an average age of (40.0±6.0) years. Among 92 cases, urological symptoms and pelvic pain including dysmenorrheal, periodic abdominal pain were the main forms of clinical characteristics, while 11 patients (12%, 11/92) were asymptomatic. All patients with ureteral endometriosis had hydronephrosis and hydroureter before surgery, hydronephrosis were left sided in 48 (52%, 48/92) patients, right sided in 39 (42%, 39/92) patients, both sided in 5 (5%,5/92) patients. The distal and middle sections of ureteral obstructions existed in 73 (79%, 73/92) patients and 19 (21%, 19/92) patients, respectively. Out of the 92 ureteral lesions 71 (77%, 71/92) patients were extrinsic lesions, 21 (23%, 21/92) patients presented intrinsic lesions.
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