Arrhythmias, Cardiac ; etiology ; Birth Weight ; Electrocardiography ; Female ; Humans ; Hypocalcemia ; complications ; Infant, Newborn ; Male

Air ; analysis ; Chromatography, Gas ; methods ; Ketones ; analysis ; Workplace

Female ; Humans ; Infant ; Male ; Ultrasonography ; Urachus ; abnormalities ; diagnostic imaging

?AIM: To observed the clinical effect of twice fluid-gas exchange in vitrectomy for retinal detachment at the equator.?METHODS: The retrospective analysis of the 74 cases (74 eyes) with retinal detachment at the equator from January 2014 to September 2015 were reviewed. All these patients were performed standard three channel 23G vitrectomy under a wide angle lens, in which, the 37 cases ( 37 eyes ) were randomly selected and performed single fluid-gas exchange, and the other 37 cases ( 37 eyes) were performed twice fluid-gas exchange. The intraoperative surgical complications and the postoperative success rate of retinal reposition in 1wk, 1, 3mo after surgery of the two group patients were observed.? RESULTS: The intraoperative surgical complication rates of the twice fluid-gas exchange group were less than that of the single fluid-gas exchange group. The postoperative success rate of retinal reposition in the twice fluid-gas exchange group significantly increased in 1wk and 1mo after surgery, and the difference was statistically significant (P<0. 05). But the postoperative success rate of retinal reposition in 3mo after surgery had no significant difference (P>0. 05).?CONCLUSION:The twice fluid-gas exchange operation was simple and it was beneficial for beginners to master. The incomplete drainage of the single fluid-gas exchange and the pore drainage in the posterior pole or in the peripheral part of the retina were avoided during the surgery. The intraoperative surgical complication rates were reduced and the postoperative success rate of retinal reposition were improved. This operation method had great application value in clinic.

Objective To compare the bone mineral density of the regions of femoral and tibial tunnels for anterior cruciate ligament(ACL)reconstruction in order to provide reference for the choice of optimal screw diameter for interference fixation.Methods Thirty healthy volunteers aged from 18 to 35 years were enrolled in our study,and the dual-energy X-ray absorptiometry(DEXA)was used to measure the bone mineral density of femoral and tibial tunnel regions of the right knee.All the right knees of the volunteers were also scanned by spiral CT and three-dimensional reconstruction technique was utilized to determine the circular sections that pass through the longitudinal axis of the femoral and tibial tunnels separately.The CT gray scale values of the Sections were measured.From August to October 2010,9 patients who had been diagnosed as ACL rupture underwent the operation of ACL reconstruction,and cylindrical cancellous bone peg was removed from the femoral and tibial tunnel respectively during the operation.Volumetric bone mineral density of the bone pegs were measured by using a standardized immersion technique according to Archimedes’ principle.Results Measured by DEXA,bone density of the femoral tunnel region arid tibial tunnel region were(1.162±0.034)g/cm2 and(0.814±0.038)g/cm2 respectively.The difference was significant between the femoral and tibial tunnel region(t=9.11,P=0.000).The CT gray scale value of the section for femoral tunnel region was(211.7±11.5)Hu,while that of the tibial tunnel region was(104.9±7.4)Hu.There was statistically significant difference between them(t=10.15,P=0.000).The volumetric bone mineral density of the bone peg from femoral tunnel and tibial tunnel were(2.80±0.88)g/cm3 and(1.88±0.59)g/cm3 respectively.The difference was statistically significant(t=4.32,P=0.002).Conclusion For ACL reconstruction,bone mineral density of femoral tunnel region is higher than that of the tibial tunnel.

This article reports a patient who suffered from Wolffian adnexal tumor.We also briefly elucidate the pathogenesis,clinicopathological features,diagnosis,differentiation,and treatment of Wolffian adnexal tumor,with an attempt to increase the awareness of the disease and reduce misdiagnosis.
Adenoma ; Adnexal Diseases ; Female ; Humans ; Immunohistochemistry ; Wolffian Ducts

OBJECTIVETo investigate the clinical results of external fixation and AO titanium elastic intramedullary nailing for treatment of tibia-fibula comminuted closed fractures.

METHODSFrom June 2010 to June 2012,58 patients with tibia-fibula comminuted closed fractures were treated with external fixation and AO titanium elastic intramedullary nailing, including 31 males and 27 females with an average age of 38.5 years old ranging from 21 to 57 years old. According to the system of AO Classification, the fractures were classified as type B1 in 9 cases,type B2 in 7 cases, type B3 in 10 cases, type Cl in 14 cases, type C2 in 12 cases,and type C3 in 6 cases. According to the system of Winquist-Hanson,the fractures' comminuted were classified as grade 1 in 23 cases, grade 2 in 17 cases, grade 3 in 12 cases, and grade 4 in 6 cases. According to the system of Johner-Wruhs, clinical results were compared between different type and grade groups by the time of last followed-up.

RESULTSAll 58 patients were followed up with an average time of 6.8 months (ranged from 18 to 36 weeks). All fractures had clinical healing with an average time of 28 weeks (ranged from 24 to 32 weeks). The total rate of good to excellent results was 91.4%. The rate of good to excellent in the group of grade 1 was higher than that of other grades. The complication rates and fracture healing time would increase respectively with higher Winquist-Hanson's grade. The complication rates in the group of type C3 was higher than that of other types, but the rate of good to excellent was lower than that of other types. The complication rates in the group of type B1 was lower than that of other types,but the rate of good to excellent was higher than that of other types.

CONCLUSIONMinimal invasiveusing AO titanium elastic intramedullary nailing combined with external fixation for treatment of tibia-fibula fractures especially for the multiple-segment,long spiral mild-to-moderate comminuted with hidden fracture can get satisfactory reduction and reliable fixation,it conformes to the principle of BO completely, protects the fracture end blood supply,reduces the external fixation time, has less skin soft tissue complications, postoperative function recovered satisfactorily.

Adult ; Bone Nails ; Bone Plates ; External Fixators ; Female ; Fibula ; injuries ; surgery ; Follow-Up Studies ; Fracture Fixation, Intramedullary ; instrumentation ; methods ; Fractures, Closed ; surgery ; Fractures, Comminuted ; surgery ; Humans ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; methods ; Tibia ; injuries ; surgery ; Young Adult

Bilirubin ; blood ; Child Development ; Female ; Humans ; Infant ; Infant, Newborn ; Male ; Neuropsychological Tests

OBJECTIVETo establish a rapid gas chromatographic method for determination of o-chlorostyrene in the air of workplace.

METHODThe air samples were collected by syringes, injected directly to the GC system, and then separated by a FFAP capillary column (30 m × 0.53 mm × 0.25 µm), finally determined by a Flame Ionization Detector.

RESULTSA good linear correlation was showed within a range of 0 ∼ 1200 µg/L, with regression formula Y = 14 030 + 7 207X (r = 0.9999). The air sample could be stably stored in the syringe for 5 hrs. The relative standard deviation (RSD) of repeated injection of o-chlorostyrene standard solutions at three different concentration by six times was 1.28% ∼ 1.97%. The minimum detectable concentration was calculated to be 5.2 mg/m(3). Other coexistent violative organic compounds such as styrene, p-chlorostyrene, and m-chlorostyrene didn't interfere with the determination under the experimental conditions of this method.

CONCLUSIONThis method meets the requirement of "Guide for establishing occupational health standards-Part 4: Determination methods of air chemicals in workplace". It is applicable for determination of o-chlorostyrene in the air of workplace.

Air Pollutants, Occupational ; analysis ; Chromatography, Gas ; methods ; Styrenes ; analysis ; Workplace

To study the relation between drug release and the drug status within curcumin-loaded microsphere, SPG (shirasu porous glass) membrane emulsification was used to prepare the curcumin-PLGA (polylactic-co-glycolic acid) microspheres with three levels of drug loading respectively, and the in vitro release was studied with high-performance liquid chromatography (HPLC). The morphology of microspheres was observed with scanning electron microscopy (SEM), and the drug status was studied with X-ray diffraction (XRD), differential scanning calorimetry (DSC) and infrared analysis (IR). The drug loading of microspheres was (5.85 ± 0.21)%, (11.71 ± 0.39)%, (15.41 ± 0.40)%, respectively. No chemical connection was found between curcumin and PLGA. According to the results of XRD, curcumin dispersed in PLGA as amorphous form within the microspheres of the lowest drug loading, while (2.12 ± 0.64)% and (5.66 ± 0.07)% curcumin crystals was detected in the other two kinds of microspheres, respectively, indicating that the drug status was different within three kinds of microspheres. In the data analysis, we found that PLGA had a limited capacity of dissolving curcumin. When the drug loading exceeded the limit, the excess curcumin would exist in the form of crystals in microspheres independently. Meanwhile, this factor contributes to the difference in drug release behavior of the three groups of microspheres.
Calorimetry, Differential Scanning ; Curcumin ; chemistry ; Drug Liberation ; Lactic Acid ; Microscopy, Electron, Scanning ; Microspheres ; Polyglycolic Acid ; X-Ray Diffraction