Comparison Of Therapeutic Effect Between Stage ? Operation And Stage ? Operation For Congenital Preauricular Fistula During Infection

Objective Congenital preauricular fistula is a common congenital external ear malformation,which is caused by poor fusion of the six hillock like nodules forming the first and second parochial arches of the auricle in embryo or incomplete closure of the first parochial groove.The genetic characteristics are autosomal dominant inheritance.Usually no symptoms,squeeze can have a little mucus or sebaceous things from the fistula outflow,secondary infection local skin redness and swelling,the patient has obvious pain,severe cases can form abscess,abscess rupture can form pus fistula or scar.For congenital preauricular fistulas in the infection stage,the treatment method is complete resection of the fistulas,and the timing of surgery has a certain influence on the patients.This project intends to study the treatment cycle,length of stay,number of stitches removed,local infection,scar,auricle deformity and recurrence rate of primary and secondary surgical treatment of congenital preauricular fistula in the infectious period,so as to select the right surgical time for patients and reduce their pain and economic pressure.Methods Forty-three patients(43 ears)who underwent congenital preauricular fistula resection in anqing hospital affiliated to anhui medical university from August2017 to July 2019 were included in the study.Among them,24 ears were in the experimental group with preauricular fistulas at the stage of infection,and received stage I surgical treatment,that is,the patients with preauricular fistulas at the stage of infection were treated with anti-inflammatory therapy or treated with incision and discharge of pus for 3 to 5 days before the preauricular fistulas were removed.Nineteen cases underwent abscess incision and drainage in the outpatient department of the hospital or the hospital,and the infection was completely controlled as the control group after treatment.The two groups of patients were treated by surgical resection of whole preauricular.The total treatment duration,incision stage II healing,scar,auricle deformity and recurrence rate of the two groups were compared.Among them,the total time of treatment refers to the time of treatment for the local pain and redness of the affected ear plus the time for the complete healing of the removed suture after the operation.P<0.05 considered statistically significant.Results Chi-square test was conducted on postoperative incision healing,scar,auricle deformity and recurrence rate.Results there was no significant difference in the rate of postoperative incision healing,scar,auricle deformity and recurrence between the stage I surgical treatment and the stage II surgical treatment of congenital preauricular fistula in the infection stage.There was no statistically significant difference between the results of the stage I surgical treatment and the stage II surgical treatment P>0.05.T test was conducted on the number of stitches removed,and the results showed that there was no statistically significant difference between the number of stitches removed in the experimental group and that in the control group P>0.05.The total treatment duration was tested by t test,and the results showed that the total treatment duration of the experimental group was significantly different from that of the control group,P<0.05.that is,the total treatment duration of the patients could be significantly shortened by stage I surgical treatment.Conclusion Congenital preauricular fistula were treated with stage I surgery during infection,on the premise of days of incision stage II,scar,auricle deformity and recurrence rate.Complete excision of the lesion as soon as possible can reduce the patient's repeated visits,thus shortening the total treatment duration of the patient,reducing the patient's pain and reducing the economic burden.