Objective To analyze the features of cervical vertebra X-ray examination and transcranial Doppler (TCD) in children with cervical vertigo, and investigate the mechanism of the disease. Methods X-ray examination of cervical vertebra and TCD were performed on 80 children with cervical vertigo, and the features of the results were analyzed. Results The abnormal results of cervical X-ray examination mainly showed atlantoaxial joint or/and C2, C3 vertebral joint disorders, some of which combined with cervical instability, cervical curvaturestraightened and even reverse curvature, cervical scoliosis. The abnormal results of TCD showed the blood flow velocity in single or multiple branch of artery increased mainly, some of which decreased or became asymmetrial. Conclusion The cervical vertigo in children may result from various kinds of disorders of the atlas, axis or/and C2, C3 vertebrae.

Objective To investigate the effects of combined assessment of normal morphology sperm rate(MNS)with sperm DNA fragmentation index(DFI)on the outcomes of in vitro fertilization-embryo transfer(IVF-ET).Methods A retrospective analysis was conducted on the clinical data of 641 patients who underwent IVF-ET in our center from June 2020 to February 2023.According to MNS and DFI levels,the patients were divided into group A(MNS＜4％,DFI＜25％,403 cases),group B(MNS ≥4％,DFI ≥25％,9 ca-ses),group C(MNS≥4％,DFI＜25％,125 cases),group D(MNS＜4％,DFI≥25％,104 cases),group A1(MNS＜1％,DFI＜25％,106 cases)and group D1(MNS＜1％,DFI≥25％,60 cases).The general information,semen parameters,embryo develop-ment and pregnancy outcomes were compared among all the 6 groups.Results No statistically significant differences were found be-tween female and male age among these groups(P＞0.05).Significant differences were observed in sperm motility,progressive motili-ty,sperm concentration and fertilization rates(P＜0.05),but no differences of usable embryo rates,good-quality embryo rates,clinical pregnancy rates,early miscarriage rates,or live birth rates(P＞0.05)among the groups A,B,C,D,A1 and D1.Conclusion The decreased MNS and increased DFI in males were associated with reduced sperm motility and concentration,affecting fertilization rates in IVF-ET,but had no significant impact on clinical pregnancy outcomes.The combined assessment of MNS with DFI had limited pre-dictive value for IVF-ET pregnancy outcomes.