Outcome of 60 neonates who had ARED flow prenatally compared with a matched control group of appropriate-for-gestational age preterm neonates.

OBJECTIVE: To describe the course and outcome of fetuses with absent or reversed end-diastolic (ARED) flow in the umbilical artery (UA) and to examine the influence of prematurity according to gestational age at delivery. METHODS: Sixty pregnancies complicated by ARED flow in the UA were monitored by repeat Doppler measurements of arterial and venous vessels, non-stress tests (cardiotocogram (CTG)) and maternal investigations, and were delivered between 24 and 34 weeks. Fetal outcome was investigated and compared to a control group of appropriate-for-gestational age (AGA) preterm neonates, matched for gestational age. Mortality, birth weight, Apgar scores, postnatal cord arterial pH and need for ventilation were all recorded, as were cases of respiratory distress syndrome, bronchopulmonary dysplasia, persistent ductus arteriosus, necrotizing enterocolitis, intraventricular hemorrhage, periventricular leukomalacia, abnormal neurological findings and those requiring surgical intervention. Additionally, the group of fetuses with ARED flow was divided into three subgroups of different degrees of prematurity (delivery between 24 + 0 and 28 + 6 weeks, delivery between 29 + 0 and 31 + 6 weeks, and delivery after 32 weeks) and compared according to the above parameters. RESULTS: Pre- or postnatal death occurred in 16 cases. Comparing the 44 (61%) that were born alive with the AGA neonates, significant differences were found in birth weight (P < 0.001), arterial pH value (P < 0.001), bronchopulmonary dysplasia (P = 0.002) and intestinal complications (P < 0.01). Prematurity-related complications were: need for ventilation (P = 0.001), respiratory distress syndrome (P < 0.0001), periventricular leukomalacia (P = 0.002) and pathological neurological testing (P = 0.005). CONCLUSIONS: Neonates displaying ARED flow before birth are growth restricted, acidemic at delivery and are at high risk of developing bronchopulmonary dysplasia and intestinal complications. While perinatal mortality seems to be related to abnormal fetal Doppler velocimetry, age at delivery has a significant impact on short-term morbidity. After 32 weeks, morbidity is low and delivery should be considered. It could be speculated from our data that prolongation of pregnancy with Doppler velocimetry monitoring could help to reduce morbidity, although prolongation remains limited in most cases.     

Emergency orthodontic treatment after the traumatic intrusive luxation of maxillary incisors.

Treatment of traumatically intruded teeth is based largely on empirical clinical experience rather than on scientific data. The aim of this qualitative meta-analysis was to provide an evidence base to evaluate the orthodontic repositioning approach. In a MEDLINE search of the literature in English, 14 reported patients involving 22 teeth were found to have been treated by this modality. Additionally, 3 new patients, involving 9 intruded teeth and presented herein, were combined to form a total study sample of 17 subjects (7 girls, 10 boys, aged 8.9 +/- 1.2 years). Orthodontic extrusive forces were applied in the immediate posttrauma period (up to 3 months), with a variety of orthodontic appliances. Repositioning was achieved for 90.3% of the affected teeth but failed in 9.7% because of inflammatory resorption (2 teeth) or a misdiagnosis of root fracture (1 tooth). Early complications included loss of pulp vitality and external root resorption. All intruded teeth with closed root apices lost their vitality regardless of the degree of intrusion, whereas among those with incomplete apices, 45.5% that had been moderately intruded remained vital. External resorption was encountered in 54.8% of the teeth. Loss of marginal bone support was rarely encountered. Late complications included inflammatory root resorption in teeth with closed apices, in which endodontic treatment was not initially performed, and obliteration of the pulp tissue in teeth that remained vital. The results show that this method is superior to other treatment alternatives.     

Inhibitory effect of glycyrrhiza uralensis fish and chelidonium majus L on gastrocarcinogenesis induced by N-methyl-N′-nitron-N-nitrosoguanidine

In order to investigate the antagonistic effect of Glycyrrhiza Uralensis Fish (GUF) and Chelidonium maJus L (CML) on gastrccarcinogenesis induced by MNNG in Wastar rats, we treated the rats with MNNG alone (group 1) and with MNNG plus GUF and CML (group 2 and 3) respectively. The incidence of infiltrating adenocarcinoma of the glandular stomach and duodenum in group 2 was significantly lower than that in group 1 (26.7% vs. 67.8%). The differentiation and aggressivenees of carcinomas occured in group 2 were much better and mild than those in group 1. Present study also demonstrated that the inhibitory effect of CML on proliferation of human stomach carcinoma cell line MGC-803 was very remarkable; in addition, GUF and CML were able to antagonise the mutagenic activation of MNNG. These results suggest that GUF and CML may be empoyed in prevention of gastric carcinoma.     

In vivo comparison of two through-plane MR velocity mapping methods: Fast fourier encoding and phase mapping

Magnetic resonance imaging maps of velocity were acquired with a 1.5-T system in 10 subjects in a plane perpendicular to the main pulmonary artery. Velocity images were successively acquired with a method developed from Fourier-encoding velocity imaging (FEVI) principles with eight gradient steps and one excitation, and with two-point phase-subtraction mapping. Reconstruction in FEVI was implemented by zero-filling interpolation around the eight gradient steps and then around the four central steps. The methods were compared by using estimates of noise in velocity measurements based on the difference between the experimental map and a smooth fitted map. For the same acquisition time, FEVI with four encoding steps was more precise in velocity measurements than phase mapping. Precision was further increased by the use of eight encoding steps, but acquisition time was doubled.     

三种粪便隐血试验的比较研究

粪便隐血试验是检测消化道微量出血的重要手段。本文用三种隐血试验:血红蛋白定量试验(HQT)、反向间接血球凝集试验(RPHA)和联苯胺试验(BT)对不同消化道疾病患者的粪便进行检测。结果表明隐血的检出用HQT和RPHA较BT更为特异和敏感。     

我国40岁及以上吸烟人群烟草依赖严重程度及其影响因素分析

目的 了解我国≥40岁吸烟人群烟草依赖情况及其影响因素,为我国广泛开展戒烟干预提供科学数据。方法 本研究数据来源于2014-2015年中国居民慢性阻塞性肺疾病监测,覆盖31个省（自治区、直辖市）的125个监测点,以面对面询问调查的方式收集≥40岁居民吸烟和烟草依赖的相关变量。应用复杂抽样加权估计我国≥40岁现在吸烟和现在每日吸烟人群烟草依赖率及其95%CI并分析其影响因素。结果 纳入分析现在吸烟者22 380人,现在每日吸烟者19 999人。≥40岁现在吸烟人群的重度烟草依赖率为31.1%（29.3%~32.9%）,其中男性为32.0%（30.2%~33.9%）,高于女性17.6%（13.4%~21.7%）;乡村为32.7%（30.2%~35.2%）,高于城镇;40~59岁年龄组重度烟草依赖率较高,为33.3%（31.3%~35.2%）。≥40岁现在每日吸烟人群的重度烟草依赖率为35.0%（33.0%~37.0%）,男性为35.8%（33.8%~37.8%）,女性为22.0%（16.8%~27.2%）。在现在吸烟人群和每日吸烟人群中,文化程度越低,重度烟草依赖率越高;18岁以前开始吸烟者重度烟草依赖率明显高于18岁及以后开始吸烟者;有慢性呼吸道症状者的重度烟草依赖率明显高于无症状吸烟者;慢性呼吸系统疾病患者和非患者的重度烟草依赖率差异无统计学意义（P>0.05）;患有糖尿病、心脑血管疾病和高血压的吸烟者的重度烟草依赖率略低于非患者（P<0.05）。多因素logistic回归分析结果显示,男性、中部和东部地区、40~59岁年龄组、从事农林牧渔水利、生产运输和商业服务职业、文化程度低、18岁以前开始吸烟者患重度烟草依赖的风险高。结论 我国≥40岁吸烟人群的重度烟草依赖水平较高,戒烟干预服务客观需求巨大,应采取有效措施推动我国戒烟干预工作的开展。     

Therapeutische Relevanz der pränatalen Diagnose

ZusammenfassungFragestellung Die isolierte Hydronephrose ist die am häufigsten gestellte pränatale Diagnose. Ihre therapeutische Relevanz ist sehr variabel, die postnatale Therapiehäufigkeit beträgt 10%.Methode Analysiert wurden 21.616 Schwangerschaften, darunter 1574 Feten mit kinderchirurgisch relevanter Diagnose. Von 990 Fehlbildungen des Urogenitaltrakts entfielen 682 Fälle auf die isolierte Nierenbeckenkelchsystemerweiterung. Die Datensätze von 850 Feten waren vollständig auswertbar. Das entsprach 896 ureterorenalen Einheiten, die in 3 Gruppen (a.-p. Nierenbeckendurchmesser <5 mm; 5–10 mm, >10 mm) eingeteilt und deren postnatale Relevanz überprüft wurden.Ergebnisse Die meisten Niereneinheiten wurden sowohl pränatal als auch postnatal der Gruppe 1 zugeordnet. Nur etwa 10% wurden in Gruppe 3 klassifiziert, aus welcher sich die Mehrheit der operativ behandelten Fälle rekrutierte.Schlussfolgerungen Aus dem ab der 20. SSW erhobenen Befund des a.-p. Nierenbeckendurchmessers kann mit hoher Wahrscheinlichkeit eine Aussage zur postnatalen therapeutischen Relevanz getroffen werden. Auf erforderliche Maßnahmen und den Stand der Literatur wird eingegangen.     

Associations between Dynamic Vitamin D Level and Thyroid Function during Pregnancy

Optimal Vitamin D (VitD) status and thyroid function are essential for pregnant women. This study aimed to explore associations between dynamic VitD status and thyroid function parameters in each trimester and throughout the pregnancy period. Information on all 8828 eligible participants was extracted from the Peking University Retrospective Birth Cohort in Tongzhou. Dynamic VitD status was represented as a combination of deficiency/sufficiency in the first and second trimesters. Thyroid function was assessed in three trimesters. The associations between VitD and thyroid function were assessed by multiple linear regression and generalized estimating equation models in each trimester and throughout the pregnancy period, respectively. The results indicated that both free thyroxine (fT4; β = 0.004; 95%CI: 0.003, 0.006; p < 0.001) and free triiodothyronine (fT3; β = 0.009; 95%CI: 0.004, 0.015; p = 0.001) had positive associations with VitD status in the first trimester. A VitD status that was sufficient in the first trimester and deficient in the second trimester had a lower TSH (β = −0.370; 95%CI: −0.710, −0.031; p = 0.033) compared with the group with sufficient VitD for both first and second trimesters. In conclusion, the associations between VitD and thyroid parameters existed throughout the pregnancy. Maintaining an adequate concentration of VitD is critical to support optimal thyroid function during pregnancy.     

Bcl-2和Bag-1在肝外胆管癌中的表达及意义

目的:研究B细胞淋巴瘤-2(B-cell leukemia-2,Bcl-2)和Bcl-2结合抗凋亡基因-1(Bcl-2associated athanogene-l,Bag-1)在肝外胆管癌组织中的表达情况,探讨其表达强度与胆管癌临床病理特征的关系.方法:采用免疫组化法检测50例肝外胆管癌组织及30例胆囊管组织中Bcl-2和Bag-1蛋白的表达情况,结合临床病理特征进行统计学分析.结果:Bcl-2和Bag-1蛋白在胆管癌组织中的表达阳性率(88.0％、70.0％)均高于胆囊管组织(43.3％、50.0％)(P＜0.05),差异有统计学意义.Bcl-2和Bag-1的表达程度与胆管癌的分化程度、临床分期及有无淋巴结转移有关,Bcl-2和Bag-1的表达呈一致性.结论:Bcl-2和Bag-1与胆管癌的发生发展有密切关系,Bag-1可能协同Bcl-2参与胆管癌的发生、发展,两者的表达程度密切相关,可作为胆管癌患者预后的预测因素.     

延续护理对心脏起搏器植入术后患者生活质量的影响

目的：探讨延续护理对心脏起搏器植入术后患者生活质量的影响。方法：将80例心脏起搏器植入术后的患者随机分为观察组和对照组,每组各40例,对照组患者在住院期间给予常规健康指导,观察组患者在此基础上给予出院后延续护理,于出院后6个月采用简明健康调查SF－36问卷进行生活质量评估,比较两组患者的生活质量。结果：延续护理干预后观察组患者的SF－36各维度得分均明显高于对照组（ P ＜0．05）。结论：延续护理可有效提高心脏起搏器植入术后患者的生活质量。