Objectlve To explore the strategies and results of transportation between hospitals for neonates under mechanical ventilation. Methods From January 2006 to December 2007,medical records of 213 newborn infants under meghanical ventilation transported to Guangzhou Women and Children's Medical Center,Guangzhou Children's Hospiml from other hospitals were reviewed.Emergent events,complications and relative managements and prognosis during the transportation were analyzed. Results No patients died during the transportation,giving a rate of Success of 100%.Before transportation,11 babies received sedatives and 157 were transported with indwelling gastric tube.During transportation,three cases required temporary parking for some emergency,and relieved after proper management.One case was due to dislocation of the tracheal tube,one due to cardiac arrest and one due to the tracheal tube block.After transportation,195 patients(91.6%) were fully recovered,11(5.2%) failed to receive any treatment,7(3.3%) died. Conclusiom Skilled doctors and nurses,full preparation before transportation and close monitoring and prompt and proper management during the transportation are essential for successful transportation of newborns under mechanical ventilation.

Objective To discuss the clinical characteristics and treatment of children with primary splenic tumor.Method A retrospective analysis was made on 13 children with primary splenic tumor from January 1970 to December 2001.Results There were splenic hemangioma in 5,splenic lymphoma in 4,splenic cysts in 2 and splenic malignant lymphoma in 2.In the primary splenic benign tumors,4 cases were treated with splenectomy,7 cases were treated with partily splenectomy;2 cases of splenectomy often had respiratory tract infection 1 year postoperatively.2 of the splenic malignant lymphoma were treated with splenectomy and chemotheraphy postoperatively;1 of them died 23 months postoperatively,another is still alive 8 months postoperatively.Conclusions The diagnosis of primary splenic tumor in children is mainly depended on B-ultrasound examination and CT scanning.Children with primary splenic benign tumors should be retained normal spleen as far as possible intraoperatively.It is important for splenectomy to pay more attention to the clinical infection 2 years postoperatively.Splenectomy combined with chemotherapy may provide optimum therapy for children with primary splenic malignant lymphoma.Early detection and treatment are crucial to increase the survival rate of children with primary splenic malignant lymphoma.

Identiifcation of tissues/body lfuids in forensic science is important for criminal cases investigation such as crime scene reconstruction, conclude the character of crime. Recently, many researches of Epigenetic shows that tissue speciifc differentially methylated regions(tDMRs) have the ability to as a biomarker for identiifcation of tissues/body lfuids. In this paper, we reviewed the study progress and summarized the probability, advantage and disadvantage as well as application value and the development direction of the application of DNA methylation in the aspect of identifying the tissues/ body lfuids source, aiming at providing a reference for the related research and application.

Objective: To observe the root and root canal morphology of mandibular second molars in Western Guangxi by CBCT, to provide a reference for clinical diagnosis and treatment. Methods: In total, 564 patients′ 1 128 mandibular second molars that satisfy the inclusion criteria were analyzed with a planmecaromexis CBCT machine and its own image analysis software. The patients′ gender, age and ethnic differences in the root and canal morphology and the symmetry of the bilateral root and canal were statistically analyzed. Results: Among the 1 128 mandibular second molars, 662 were the Zhuang ethnic group and 384 were the Han ethnic group, and 82 were other ethnic groups; the double root type and C-shaped root type accounted for a relatively high proportion: 73.94% and 24.47%, respectively. The detection rates of the double root type were higher in males than in females (P < 0.05); the detection rates of the C-shaped root type were higher in females than in males (P <0.05); the root type of the teeth was mainly double-rooted in the Zhuang ethnic group (P<0.01). The incidence of type IV in the mesial root of the double root type mandibular second molar was the highest (P < 0.01), and the incidence of type I in the distal root was the highest (P < 0.01). The C-shaped root canal is more continuous at the mouth of the root canal, more downward corresponds to a worse continuity: in three different levels of root canal orifice, root middle and root apex, the root canal orifice is dominated by the C1 type, and both root middle and root apex are mainly C3-type (P < 0.01). The difference in symmetry of bilateral roots and root canals was statistically significant among different gender groups, age groups, and ethnic groups (P < 0.05): there were more males than females, the results in the 18-35-year-old group and the Zhuang ethnic group were higher. Conclusion The root and root canal morphology of mandibular second molars in western Guangxi people are complex and changeable. The roots are mainly double root type in the Han ethnic group and the Zhuang ethnic group. C-shaped roots are also common. The detection rate of C-shaped roots in the Zhuang ethnic group was higher, and the symmetry rate of bilateral roots and that of bilateral root canals was higher in the Zhuang ethnic group than in the Han ethnic group.