Objective To investigate the occurrence of dysphagia in patients with congenital esophageal atre-sia(EA)after surgery and study the associated risk factors.Methods A retrospective analysis was conducted on clinical data of 103 children who underwent surgery for congenital EA at Beijing Children's Hospital,Capital Medi-cal University,from July 2016 to August 2023.Results A total of 103 eligible cases of congenital EA were includ-ed in this study,among which 74 cases experienced dysphagia,with an incidence rate of 71.8％.Single-factor anal-ysis revealed that primary surgery(x2=4.017,P=0.045),endoscopic surgery(x2=8.315,P=0.004),long-seg-ment defects(x2=10.975,P＜0.001),gastroesophageal reflux(x2=16.973,P＜0.001),vocal cord paralysis(x2=4.017,P=0.045),tracheomalacia(x2=5.778,P=0.016),and arytenoid movement disorder(x2=10.420,P=0.001)were significantly associated with postoperative dysphagia.Further binary logistic regression analysis indi-cated that endoscopic surgery(OR=24.373,P=0.016),tracheomalacia(OR=17.556,P=0.010),and anasto-motic stenosis(OR=20.453,P=0.032)were independent risk factors for increased incidence of postoperative dys-phagia.Moreover,stratified analysis of dysphagia duration using unordered multinomial logistic regression revealed that tracheomalacia(OR=16.883,P=0.007;OR=4.337,P=0.045),long-segment defects(OR=0.040,P=0.049;OR=0.040,P=0.036),and arytenoid movement disorder(OR=0.127,P=0.039;OR=0.510,P=0.028)were closely associated with dysphagia duration.Conclusion Dysphagia is a common symptom in children with congenital EA after surgery across all age groups.Endoscopic surgery,long-segment defects,tracheomalacia,and anastomotic stenosis are independent factors contributing to postoperative dysphagia.Additionally,tracheoma-lacia,long-segment defects,and arytenoid movement disorder are closely related to the duration of dysphagia.

Objective To investigate the occurrence of dysphagia in patients with congenital esophageal atre-sia(EA)after surgery and study the associated risk factors.Methods A retrospective analysis was conducted on clinical data of 103 children who underwent surgery for congenital EA at Beijing Children's Hospital,Capital Medi-cal University,from July 2016 to August 2023.Results A total of 103 eligible cases of congenital EA were includ-ed in this study,among which 74 cases experienced dysphagia,with an incidence rate of 71.8％.Single-factor anal-ysis revealed that primary surgery(x2=4.017,P=0.045),endoscopic surgery(x2=8.315,P=0.004),long-seg-ment defects(x2=10.975,P＜0.001),gastroesophageal reflux(x2=16.973,P＜0.001),vocal cord paralysis(x2=4.017,P=0.045),tracheomalacia(x2=5.778,P=0.016),and arytenoid movement disorder(x2=10.420,P=0.001)were significantly associated with postoperative dysphagia.Further binary logistic regression analysis indi-cated that endoscopic surgery(OR=24.373,P=0.016),tracheomalacia(OR=17.556,P=0.010),and anasto-motic stenosis(OR=20.453,P=0.032)were independent risk factors for increased incidence of postoperative dys-phagia.Moreover,stratified analysis of dysphagia duration using unordered multinomial logistic regression revealed that tracheomalacia(OR=16.883,P=0.007;OR=4.337,P=0.045),long-segment defects(OR=0.040,P=0.049;OR=0.040,P=0.036),and arytenoid movement disorder(OR=0.127,P=0.039;OR=0.510,P=0.028)were closely associated with dysphagia duration.Conclusion Dysphagia is a common symptom in children with congenital EA after surgery across all age groups.Endoscopic surgery,long-segment defects,tracheomalacia,and anastomotic stenosis are independent factors contributing to postoperative dysphagia.Additionally,tracheoma-lacia,long-segment defects,and arytenoid movement disorder are closely related to the duration of dysphagia.

OBJECTIVE:To evaluate the bioavailability of two nimesulide preparations.METHODS:A total of 20 healthy male volunteers were enrolled in a randomized crossover study in which the subjects were randomly assigned to receive single dose of 200 mg nimesulide orally disintegrating tablets(test)or nimesulide tablets(reference).The plasma concentrations of nimesulide were determined by RP-HPLC,and the pharmacokinetic parameters and bioavailability were calculated with DAS program.RESULTS:The main pharmacokinetic parameters of nimesulide test and reference preparations were as follow:AUC0～24:(54.67?18.25)vs.(56.15?15.54)?g?h?mL-1;AUC0～∞:(56.38?18.03)vs.(57.63?15.26)?g?h?mL-1;Cmax:(7.61?2.72)vs.(7.50?2.19)?g?mL-1;tmax:(3.83?1.39)and(3.80?1.28)h.The relative bioavailability of nimesulide or-ally disintegrating tablets as against nimesulide tablet was(98.7?22.9)%.CONCLUSION:Nimesulide test and reference preparations were bioequivalent.