Informed consent is the important thesis in life ethics and life law,which gives the patients and experimenters the right of self-decision making on medical procedures and experiments.As the development of public health and public health ethics,informed consent has been paid more attention,especially on informed consent problems in epidemiology and public health practice.The requirement of informed consent varies in different research fields.According to different practice purposes,the researchers choose relevant applicable methods.

Objective:To compare the effects of rotational night shifts on the micturition patterns of fe-male nurses.Methods:A total of 58 nurses without lower urinary tract symptoms were recruited,who worked in the Peking University People’s Hospital during January and June in 2014.The nurses aged 20 -43 years were divided into two groups,the night-shift group (n =28)and the non-shift group (n =30).The alcohol or coffee intaking were forbidden.In the night-shift group,nurses had worked on rota-tional shifts for at least 6 months.Their average age was (26.75 ±4.11)years.In the non-shift group, nurses took regular day-time work,whose average age was (27.80 ±5.60)years.A voiding diary was kept for 7 consecutive days at the end of 6 months,starting 2 days before their night duties until 4 days after completion of their night duties.For comparison,the non-shift group with regular shifts completed a 7-day voiding diary.In the 7-day recording voiding diary,the nurses were required to have the normal in-take of liquid about 1 500 -2 000 mL/d.The frequency volume charts of nocturia,the 8-hour interval urine production and frequency were compared between the two groups.Results:Nocturia frequency was increased in the night-shift group [0.5 (0 -2.4)]compared with the non-shift group [0 (0 -2),P =0.02].The volume of nocturia was increased in the night-shift group [125 mL (0 -660 mL)]compared with the non-shift group [0 mL (0 -340 mL),P <0.01].The 8-hour interval indices showed that urine production changed with shift (P <0.01).In the consecutive 7 days,the nocturnal volume of the night-shift group increased on the day after night shift.When the night-shift nurses returned to daytime duty, the volume of urine decreased but nocturnal urine production remained high,and the frequency of noctu-ria also increased significantly (P <0.05).Compared with the 8-hour interval indices,the night-shift group’s voiding volume [(542.35 ±204.66)mL]and voiding frequency (2.24 ±0.69)were more than those of the non-shift group at the afternoon time (from 2 pm to 10 pm).During the 8 h interval night time (from 10 pm to 6 am),the volume of nocturia in the night-shift group [(309.74 ±162.74) mL]was more than that in the non-shift group [(199.38 ±153.98)mL,P =0.01];the frequency of nocturia in the night-shift group (1.31 ±0.52)was increased than that in the non-shift group (0.82 ± 0.55,P <0.01).Conclusion:The rotational shifts affect the micturition patterns of nurses who go through the night shift work,which increases the volume and frequency of the nocturia.

The mechanism of degenerative intervertebral disc is very complex, which may be associated with multiple factors such as the mechanical stress force injury of intervertebral disc, nutritional deficiency, inflammatory stimulation, etc. Recently, many studies detected propionibacterium acnes(P. acnes) in degenerative intervertebral disc and supposed P. acnes was associated with degenerative intervertebral disc. Here, the papers related to P. acnes and degenerative intervertebral disc were reviewed. Further, we deduced the approach of P. acnes enterring into the intervertebral disc as well as the mechanism of P. acnes aggravating the disc degeneration. These may provide suggestions for treating degenerative intervertebral disc.

Objective: Our aim was to investigate the effects of phenylephrine (PH) and angiotensin Ⅱ (AT) on reperfusion arrhythmias in the isolated rat heart and its mechanism. Methods: Isolated rat hearts were subjected to dual coronary perfusion. After 15 minutes of aerobic perfusion of both coronary beds, flow to the left coronary bed infused selectively into that bed. Ventricular tachycardia (VT) and fibrillation (VF) were analyzed 5 minutes after reperfusion. Results: The reperfusion arrhythmias was significantly exacerbated by PH; however, AT alone did not have the same effect. The selective Na+/H+ exchanger (NHE) inhibitor, HOE642, which was infused along with PH, reversed the proarrhythmic effects of PH. The specific protein kinase C (PKC) inhibitor GF109203X (GF) infused along with PH can only partially reverse the proarrhythmic effect of PH. The AT2 receptor inhibitor PD123319 (PD) alone increased the incidence of reperfusion-induced arrhythmias. However, no statistical significance showed. Combination of PD and AT significantly increased the incidence of reperfusion-induced arrhythmias. Conclusion: Activation of α1-adrenoceptor can exacerbate reperfusion-induced arrhythmias. The AT1 receptor activated by AT can exacerbate reperfusion-induced arrhythmias. The activation of AT2 receptor may reduce reperfusion-induced arrhythmias.

Scar, either hypertrophic scar or keloid, is one of the most common complications due to proliferative disorder of fibrosis in the process of wound healing after burn injuries, trauma, and surgical operations. To repair the cosmetic and functional impairments caused by scars poses a great challenge to all the burn surgery workers. With the advances in both basic research and clinical treatment, the understanding of scar formation and the therapeutic strategies of scar have been improved significantly. However, the remaining problems are still outstanding. In this discussion, the advances and problems in the scientific research in this field, including genetic predisposition, candidate gene, dysfunction of fibroblasts, interaction between fibroblasts and keratinocytes, as well as animal models for hypertrophic scar and keloid were summarized. In addition, the progresses in the clinical therapies are also discussed, including pressure treatment, silicone gel sheeting, corticosteroids, laser, and other emerging treatment strategies. The understanding and treatment of scar will improve in the future with further deepening basic research and clinical trials with stricter standard of assessment.
Burns ; pathology ; Cicatrix ; genetics ; pathology ; therapy ; Fibroblasts ; cytology ; Humans ; Keratinocytes ; cytology

OBJECTIVETo explore the therapeutic effects of internal fixation with Herbert screws for the treatment of Pipkin type I and type II femoral head fractures.

METHODSFrom January 2008 to December 2012, 23 patients with Pipkin type I and type II femoral head fractures were treated with open reduction and internal fixation by Herbert screws through Kocher-Langenbeck approach. Twenty-three patients (aged 18 to 52 years with a mean of 35.5 years, including 18 males and 5 females patients, 8 left hips and 15 right hips) with femoral head fractures and posterior hip dislocation. The fracture was classified according to Pipkin classification based on the radiographic findings, 5 patients had type I and 18 had type II fractures. The duration time from admission to the operation ranged from 6 to 72 h (averaged 32 h). The clinical and radiographic outcomes of the patients were measured using Thompson-Epstein scoring scale. The Harris hip score(HHS) was used to evaluate and compare hip functions at the latest follow-up between affected and healthy sides.

RESULTSAll the patients were followed up, and the duration ranged from 20 to 48 months (averaged 30 months). According to Thompson-Epstein system, 12 patients got an excellent result, 6 good, 4 fair and 1 poor. The average HHS at the finial follow-up was 87.80 ± 8.46 (ranged from 66 to 95), which is similar to that in the healthy side 90.10 ± 6.35 (ranged from 72 to 98) (t = 1.044, P = 0.302). The complications such as deep infection, and deep vein thrombosis were not found. At the 3rd year during follow-up,4 patients had avascular necrosis of femoral head. At the 1st year of follow-up, 1 patient had hip pain after walking,screws loosening and shift after trauma,and serious complications of traumatic arthritis. All the 5 patients were treated with total hip arthroplasties.

CONCLUSIONThe treatment of internal fixation with Herbert screws through the Kocher-Langenbeck approach is effective for Pipkin type I and type II femoral head fracture. The method is reliable and valuable for recommendation. However, such fracture may have avascular necrosis of femoral head and complication of traumatic arthritis, which should be observed carefully in clinic with preparation of the prevention and treatment measures.

Adolescent ; Adult ; Bone Screws ; Female ; Femoral Neck Fractures ; surgery ; Fracture Fixation, Internal ; adverse effects ; methods ; Humans ; Male ; Middle Aged

Altitude ; Altitude Sickness ; Animals ; Hypoxia ; Iron ; Mice ; Spleen

Objective To study the baseline level of fraction anisotropy (FA) and the normal value of apparent diffusion coefficient (ADC) in deep white matter of preterm and its application.Methods From Oct.2010 to Dec.2013,in Department of Neonatology,Jiangsu Province Hospital,magnetic resonance imaging (MRI) (T1,T2) and diffusion tensor imaging (DTI) were done on 13 preterm infants of less than 37 weeks of corrected gestational age (CA),42 preterm infants of term-matched age,and 15 term infants.ADC and FA were measured in genu and splenium of corpus callosum (CC),anterior limb and posterior limb of internal capsule (IC).Results 1.The ADC values in genu,splenium,anterior limb of right IC,posterior limb of right IC,anterior limb of left IC,posterior limb of left IC in CA ＜ 37 weeks infants were higher than those in term-matched infants and in term infants.The ADC values in the 6 regions in term-matched infants and in term infants were significantly different with those in CA ＜ 37 weeks infant(F =5.559,5.775,21.948,19.462,30.586,15.452,all P ＜ 0.01).The differences of ADC values between CA ＜ 37 weeks infants and term-matched infants,between CA ＜37 weeks infants and term infants were significant(all P ＜0.05),except that in CC between CA ＜ 37 weeks infants and term-matched infants.2 The FA values in genu,splenium,anterior limb of right IC,posterior limb of right IC,anterior limb of left IC,posterior limb of left IC in CA ＜ 37 weeks infants were lower than those in term-matched infants and in term infants.The FA values in the 6 regions in term-matched infants and in term infants were significantly different from those in CA ＜ 37 weeks infants (F =9.835,7.500,4.811,11.430,8.674,12.666,all P ＜ 0.01).The differences of FA values between CA ＜ 37 weeks infants and term-matched infants (P ＜ 0.05),between CA ＜ 37 weeks infants and term infants were significant (all P ＜ 0.05).Conclusions The baseline values of FA and ADC in different deep white matters were obtained.As corrected gestational age of preterm babies' increased,FA values in brain white matter increased,while ADC values decreased.The myelination in most white matter of preterm infants at matched term can catch up with that of term infants.The diagnostic value of ADC and FA needs to be studied further.

Objective:To investigate the correlation between Duke treadmill score (DTS) and corrected thrombolysis in myocardial infarction frame count(CTFC)in patients with coronary atherosclerotic heart disease(CAD). Methods:Seventy-two patients with coronary atherosclerotic heart disease, who underwent treadmill exercise tests in 2 weeks before coronary angiography were enrolled in our study. All the patients were divided into 2 groups according to the value of DTS: low-risk group (DTS≥5) and moderate-high-risk group (DTS

Objective To investigate the incidence and clinical presentation of breast milk transmitted cytomegalovirus (CMV) infection among preterm infants with birth weight≤1500 g.Methods Preterm infants enrolled in this study met the following inclusion criteria: birth weight≤1500 g, fed with CMV-positive breast milk and admitted into Neonatal Intensive Care Unit of Children's Hospital of Fudan University within 72 hours after birth from October 2015 to July 2016. And those with congenital digestive tract malformation or congenital CMV infection were excluded. Breast milk and infants' urine samples were regularly screened for CMV DNA by fluorescent quantitative polymerase chain reaction. Symptoms and laboratory findings in infants with CMV infection transmitted via breast milk were documented and analyzed. Differences in relevant parameters were analyzed usingChi-square test, Fisher's exact test,t test or Mann-WhitneyU test where appropriately.Results Sixty preterm infants breastfed with CMV DAN-positive milk were recruited. Among them, 19 (31.7%) developed breast milk-acquired CMV infection as their urine samples were positive for CMV DNA, while the others were negative for CMV DNA (infected group:n=19; non-infected group:n=41). The average CMV copies in breast milk, gestational age and birth weight of the infected group were all significantly higher than those of the non-infected group [3.76 (3.18-4.50) vs 3.47 (3.00-4.88) Log10 copies/ml,Z=-2.042;(30.4±2.1) vs (28.4±2.3) weeks,t=3.175; 1290 (750-1500) vs 1110 (575-1480) g,Z=-2.837; all P<0.05). Fewer infants in the infected group than in the non-infected group received blood transfusion [5/19 vs 56.1%(23/41),χ2=4.627,P<0.05]. Ages of the infants with CMV infection ranged from 26 to 164 days (median age of 92 days). Six out of the 19 infants had clinical symptoms concurrent with viral excretion in urine and the ages of these symptomatic infants of infection were earlier than those of the asymptomatic ones without significance [(72±34) vs (97±28) days,t=-1.710,P>0.05]. Four infants (21.1%, 4/19) had severe organ damage and/or positive IgM antibodies to CMV in serum, and were treated with antiviral therapy. Two had mild symptoms and were not given antiviral therapy. All of the six symptomatic infants were followed-up for one to six months, during which time the complete blood cell count and results of biochemical test and fundus examination were back to normal.Conclusions The incidence of breast milk-acquired CMV infection among preterm infants with birth weight≤ 1500 g was 31.7%, and no severe symptoms were reported in this study.