Objective To investigate the correlation between intima-media thickness(IMT)and elasticity of carotid in patients with type 2 diabetes accompanied hyperlipidemia by quantitative intima-media thickness(QIMT)and quantitative arterial stiffness(QAS)technique.Methods Fifty-six patients with type 2 diabetes accompanied hyperlipidemia were involved into the study as case group.Forty-eight healthy volunteers were supplied as normal control group in the same period.IMT,compliance coefficient(CC),distensibility coefficient(DC)and stiffness index(β)of carotid were acquired through QIMT and QAS.Case group was divided into case group 1(IMT＜0.9mm)and case group 2(IMT≥0.9 mm),and analysis was performed furtherly.Results β,triglyceride(TG),lowdensity lipoprotein(LDL),cholesterol(Ch),glycosylated hemoglobin(GHb)and IMT had significant differences in case group 1,case group 2 and control group(P＜0.05),control group＜case group 1＜case group 2.DC and CC had significant differences in case group 1,case group 2 and control group(P＜0.05),control group＞case group 1＞case group 2.There was significant positive correlation between β and age,GHb,LDL and IMT of carotid respectively(r=0.811,r:0.764,r=0.732,r:0.729,respectively,P=0.000).Conchmions IMT of carotid could be measured accurately by QIMT.Structure imaging and functional imaging of carotid might be combined organically through QIMT and QAS.Depth study about early change of carotid in structure and function could be performed with these two techniques.

Objective To establish a quantitative measurement of flow field uniformity of mitral valve in vivo and investigate the correlation between the parameter of flow field uniformity and the degree of mitral stenosis. Methods The flow field uniformity downstream of mitral valve in normal cases and patients with mitral stenosis were studied using vector flow mapping(VFM) technique. Results The flow field uniformity parameter of standard deviation of velocity (Vsd) in patients with mitral valve stenosis was significantly higher than that in control group ( P <0. 05). There was a negative linear correlation between Vsd and effective orifice area(EOA) in patients with mitral valve stenosis (parasternal long-axis: r = - 0. 816, P = 0.000; apical four chamber: r = - 0. 825, P = 0. 000). Conclusions VFM can really reflect the flow field uniformity of normal cases and patients with mitral stenosis.

The purpose of risk assessment is to evaluate the permissible exposure level under specific risk factors.To extrapolate the human acceptable daily intake (ADI) and/or reference dose (RfD), the traditional method uses the no-observed-adverse-effect level ( NOAEL ) to quantify toxicity after being divided by uncertainty factor.There are many limitations with NOAEL method in safety evaluation,for it relies too much on experimental design.Benchmark dose ( BMD) approach is a more reliable method with many advantages.BMD approach and its analysis software, the advantages of BMD over NOAEL, the application and methodological perfection in risk assessment of long-team exposure toxicity are presented in this review.

Objective To investigate the detection of BJ-75A-9 mHNA, WNX and CK19 mRNA in peripheral blood cells of lung cancer patients and evaluate its diagnostic value. Methods The expression of BJ-TSA-9, LUNX and CK19 mRNA in peripheral blood cells was delected from 84 lung cancer patients, 32 benign lung lesions and 20 healthy volunteers by nested reverse transcription polymerase chain re-action (Nested-RT-PCR). Results The positive detection rates of BJ-75A-9,LUNX and CK19 mRNA in the peripheral blood of the pa-tients with lung cancer were 59.5%,40.4%and 22.6% respectively. In the 32 peripheral blood samples of the patients with benign lung le-sions,the positive detection rate of BJ-TSA-9,LUNX and CK19 mRNA were 9.3%, 12.5% and 6.3% respectively. No expression of BJ-TSA-9,LUNX and CK19 was detected in lhe samples of the healthy volunteers. The expression level of BJ-TSA-9, WNX and CKI9 mRNA in the peripheral blood of lung cancer stage IV patients was significantly higher than those of stages II and ID (P< 0.05). Conclusion RT-PCR amplification of BJ-TSA-9, LUNX and CK19 mRNA are an efficient way to detect early haematogenous dissemination of cancer cells for lung cancer patients. The detection of BJ-TSA-9 expression is sensitive and specific for lung cancer,and it is superior to both LUNX and CK19 mRNA. The expression of BJ-7SA-9 mRNA in peripheral blood might predict the hematogenous metastatic spreading of lung cancer cells.

This paper retrospectively analyzed nursing care of 20 critically ill patients with human infections of avian influenza A(H7N9) virus treated by oxygen therapy.According to the severity of hypoxia in patients admitted to the hospital,individualized oxygen therapy strategy was selected,such as humidified high flow nasal cannula or mechanical ventilation.Oxygen therapy strategy was adjusted in a timely manner according to patients' condition,such as prone position ventilation and extracorporeal membrane oxygenation.As a resuh,15 cases were transferred to the general ward when the virus associated test was negative,and 5 cases died.

BACKGROUNDMaxillary anterior segmental distraction osteogenesis (MASDO) is a recently used method for correction of severe maxillary retrusion in cleft lip and palate (CLP) patients. In this article, we evaluated the feasibility of MASDO using rigid external distraction (RED) and rapid orthodontic tooth movement to correct severe maxillary retrusion in CLP patients.

METHODSFourteen male and five female complete CLP patients between the ages of 18 and 22 years (mean age 19.7 years) at the time of distraction, with severe maxillary retrusion, were treated with the rigid external distraction (RED) device after maxillary anterior osteotomy. Rapid orthodontic tooth movement was started one week after the MASDO. Standard profile photographic, cephalometric films were obtained preoperatively and after therapy. Sella-nasion-point A (SNA) and Sella-nasion-point B (SNB) angles were measured to reflect changes in maxillary and mandibular position, and the distance between anterior nasal spine and posterior nasal spine (ANS-PNS) was measured to represent the maxillary dental arch length.

RESULTSThe SNA angle increased from an average of 74.6° (range 73.0°-78.0°), preoperatively, to 83.4° (range 78.6°-88.0°) after the RED was removed (P < 0.01). All cases of severe maxillary retrusion were improved. Nine patients' profiles became harmonious after therapy. One patient had a bimaxillary protrusion deformity and needed further surgery. The regenerate alveolar crest and edentulous space on both segments was almost completely eliminated after rapid orthodontic tooth movement.

CONCLUSIONMASDO with the RED system and rapid orthodontic tooth movement is a successful way of correcting severe maxillary retrusion in CLP patients.

Adolescent ; Adult ; Cleft Lip ; surgery ; Cleft Palate ; surgery ; Female ; Humans ; Male ; Osteogenesis, Distraction ; methods ; Tooth Movement Techniques ; Young Adult

BACKGROUND: The fetal growth charts in widest use in China were published by Hadlock >35 years ago and were established on data from several hundred of American pregnant women. After that, >100 fetal growth charts were published around the world. We attempted to assess the impact of applying the long-standing Hadlock charts and other charts in a Chinese population and to compare their ability to predict newborn small for gestational age (SGA). METHODS: For this retrospective observational study, we reviewed all pregnant women ( n  = 106,455) who booked prenatal care with ultrasound measurements for fetal biometry at the Shenzhen Maternity and Child Healthcare Hospital between 2012 and 2019. A fractional polynomial regression model was applied to generate Shenzhen fetal growth chart ranges for head circumference (HC), biparietal diameter (BPD), abdominal circumference (AC), and femur length (FL). The differences between Shenzhen charts and published charts were quantified by calculating the Z -score. The impact of applying these published charts was quantified by calculating the proportions of fetuses with biometric measurements below the 3rd centile of these charts. The sensitivity and area under the receiver operating characteristic curves of published charts to predict neonatal SGA (birthweight <10th centile) were assessed. RESULTS: Following selection, 169,980 scans of fetal biometry contributed by 41,032 pregnancies with reliable gestational age were analyzed. When using Hadlock references (<3rd centile), the proportions of small heads and short femurs were as high as 8.9% and 6.6% in late gestation, respectively. The INTERGROWTH-21st standards matched those of our observed curves better than other charts, in particular for fat-free biometry (HC and FL). When using AC<10th centile, all of these references were poor at predicting neonatal SGA. CONCLUSIONS Applying long-standing Hadlock references could misclassify a large proportion of fetuses as SGA. INTERGROWTH-21st standard appears to be a safe option in China. For fat-based biometry, AC, a reference based on the Chinese population is needed. In addition, when applying published charts, particular care should be taken due to the discrepancy of measurement methods.
Infant, Newborn ; Child ; Female ; Pregnancy ; Humans ; Growth Charts ; Prenatal Care ; Ultrasonography, Prenatal/methods* ; Fetal Development ; Fetal Growth Retardation ; Gestational Age ; Fetus ; China ; Infant, Newborn, Diseases ; Observational Studies as Topic