In recent years,with the establishment of neonatal intensive care unit and the development of nutritional support,the survival rate of very low birth weight infants has increased significantly.As more and more premature infants and low birth weight infants have been rescued alive,more attention has been paid to the follow-up growth of preterm children as well as the related impact factors in prenatal medicine.The most effective way to evaluate the effects of the nutritional support and medical decision has made on the premature infants,the postnatal Physical development of preterm infants after birth,including height,weight,head circumference and IBM,should be recorded and studied.This article reviews the current studies of follow-up of preterm infants at various growths stages,as well as the catch-up growth and long-term development.

Objective To study the mental development and efficacy of caffeine citrate and aminophylline in treating primary apnea in premature infants. Methods Preterm infants who were diagnosed as primary apnea, received caffeine citrate therapy and recovered in the neonatal ward of our Hospital from December 2013 to December 2014, and followed-up in the high-risk infants outpatient clinic of our Hospital after discharge were recruited in the caffeine group. Preterm infants of aminophylline group were recruited randomly by number method. They were diagnosed as primary apnea, received aminophylline therapy and recovered in our neonatal ward from December 2011 to December 2013, and followed-up regularly in the high-risk infants outpatient clinic of our Hospital after discharge. The treatment effect and mental development at 6 and 12 months of corrected age between the two groups were compared. Results Each group included 150 cases of premature infants. The time (h) of oxygen therapy, noninvasive mechanical ventilation, and invasive mechanical ventilation in the caffeine group were all significantly shorter than that in the aminophylline group [(119. 1 ± 100. 2) vs. (156. 5 ± 134. 1), (107. 4 ± 100. 2) vs. (156. 7 ± 139. 8), (146. 4 ± 122. 6) vs. (270. 9 ± 257. 2), P < 0. 05]. The incidence of patent ductus arteriosus and bronchopulmonary dysplasia in the caffeine group were significantly lower than that in the aminophylline group (24. 0% vs. 45. 3% , 9. 3% vs. 21. 3% , P <0. 05). The scores of gross motor, fine motor and social intercourse in caffeine group were significantly higher than aminophylline group at 6 months of corrected age ( P < 0. 05). The scores of gross motor, fine motor, language and adaptability of infants at 12 months of corrected age from caffeine group were significantly higher than that of infants from aminophylline group ( P < 0. 05). Conclusions Caffeine citrate treatment of primary apnea in preterm infants is more effective than aminophylline. Caffeine citrate treatment can improve mental development of premature infants.

Objective To explore the safety and effectiveness of Mini-percutaneous nephrolithotomy (MPCNL)in the treatment of upper urinary stones in uygur children.Methods Retrospectively analyzed the date 158 cases of upper urinary stones in children treated by MPCNL in xinjiang hotan people's hospital from March to December 2016,117 cases of males and 41 cases of females,aged from 5 months to 14 years (average:2.59 years),including 112 cases of 5 months to 3 years old and 46 cases of 3 to 14 years old.There were 69 cases on the left,67 cases on the right and 22 cases on both sides.The average stone size was 2.3 cm × 1.8 cm.According to the size of the calculi,the percutaneous renal channel was selected between 12-18 F,the energy was selected for holmium laser lithotripsy,no perfusion pump was used and the hydrostatic pressure was controlled at 50 to 70 cm water column.Double J tube and renal fistula were placed postoperatively in 139 children;15 cases were not treated with renal fistula and 4 cases were completely free of tubulization.To observe the number and proportion of children with fever before and after operation.For multiple stones,use the accumulative maximum diameter calculation.To observe the changes of blood routine indexes before and after surgery,as well as operation time,puncture site,channel size and number,length of hospital stay,stone removal rate,stone composition and other postoperative complications.Counting data was expressed as a rate (％),and comparison between groups was performed by chi-square test.Results A total of 180 cases were successfully operated on kidney MPCNL.No complications above ClavienⅡ occurred.Two cases were treated with 1 unit of postoperative erythrocyte transfusion.The time of unilateral operation was 15 to 85 minutes with an average of 35 minutes.The first-stage stone clearance rate was 88.6％ (140/158) and the total stone clearance rate was 92.4％ (146/158).Postoperative hospitalization ranged from 3 to 8 days with an average of 6.2 days.Condusion MPCNL was used to treat upper urinary stones with high efficiency and safety and little damage for children with large stones or combined with water accumulation.Some appropriate children can be free of renal fistula or complete absence of tubulization to facilitate the recovery of children.