Diagnosis of tuberculosis in children is challenging. Traditional and molecular microbiologic methods lack sensitivity,particularly in children. With the development of science and technology,more and more testing me﹣thods are applied in clinical practice,so that tuberculosis(TB)can be diagnosed in time and treated at the right time. TB is still one of the most difficult infectious diseases to treat,and the second most frequent cause of death due to infec﹣tious disease throughout the World. The number of cases of multidrug － resistant TB( MDR － TB)and extensively drug－resistant TB(ⅩDR－TB),Which are characterized by high mortality rates,is increasing. Therefore,appropriate drug selection is particularly critical in the treatment of drug－resistant tuberculosis.

Objective:To explore the characteristics of cortical activation during the stimulation-assisted walking of hemiplegic stroke survivors using functional near-infrared spectroscopy (fNIRS).Methods:Eight stroke survivors with right hemiplegia (average age 44.4±7.2 years) in a self-controlled study each walked at 2km/h on a treadmill, alone and assisted by functional electronic stimulation (FES). Real-time near-infrared spectroscopic images were recorded. The Matlab NIRS-SPM toolkit was employed to calculate the changes in oxyhemoglobin concentration in different cortical regions. A general linear model was evaluated which integrated the task effects, and version 20.0 of the SPSS statistical software was used to perform single sample or paired sample t-tests of the beta values so as to produce activation hot maps of the significant differences.Results:During unassisted walking channels 8, 10, 11, 13-20, 23-28, 30 and 32-37 were significantly activated. During FES-assisted walking it was the same channels plus channels 9 and 22, 31. The results suggest that in walking the cortical regions activated are mainly located in M1 of the unaffected hemisphere, supplemented by M1 and SMA, PMC and S1 in the affected hemisphere. There were significant differences in the activation of channels 9, 24, 27, 32, 33 between the two walking tasks. FES-assistance enhances S1 activation on the unaffected side, as well as the SMA and PMC of the affected side more significantly.Conclusions:Bilateral asymmetrical activation is found mostly in M1 during walking with or without FES assistance. FES assistance significantly strengthens the compensatory activation of the PMC and SMA of the affected hemisphere while walking for those with hemiplegia.

Objective To explore the clinical characteristics of bronchial foreign bodies in children. Method The clinical data of 147 children with exogenous bronchial foreign body admitted between 2014 and 2016 were retrospectively analyzed, and the applications of rigid bronchoscopy and flexible bronchoscopy for foreign body extraction were compared. Results All 147 cases were diagnosed with bronchial foreign bodies by chest CT, chest X-ray or respiratory endoscopy. In these cases (104 boys and 43 girls) , 87.8％ of whom were aged 1-3 years, the most common types of bronchial foreign body were nuts. The common complications were bronchial mucosal granulation tissue hyperplasia (88 cases, 59.86％) , pneumonia (56 cases, 38.1％) , atelectasis (15 cases, 10.2％) , respiratory failure (14 cases, 9.52％) and bronchiectasis (4 cases, 2.72％) respectively. The foreign bodies were removed by soft bronchoscopy in 106 cases which were successfully removed at one time in 100 cases. Respiratory endoscopy was undergone in 141 cases to remove foreign bodies, and flexible bronchoscope was applied in 106 (72.11％) cases and foreign bodies were successfully removed in first attempt in 100 cases (94.34％) . Rigid bronchoscope was used in 35 cases (23.81％) and foreign bodies were successfully removed in first attempt in 28 cases (80.0％) . Conclusion The majority of children with bronchial foreign body are male. Both flexible and rigid bronchoscopes can remove exogenous foreign bodies in the lower respiratory tract.