1.Treatment Principles and Paradigm of Diabetic Microvascular Complications Responding Specifically to Traditional Chinese Medicine
Anzhu WANG ; Xing HANG ; Lili ZHANG ; Xiaorong ZHU ; Dantao PENG ; Ying FAN ; Min ZHANG ; Wenliang LYU ; Guoliang ZHANG ; Xiai WU ; Jia MI ; Jiaxing TIAN ; Wei ZHANG ; Han WANG ; Yuan XU ; .LI PINGPING ; Zhenyu WANG ; Ying ZHANG ; Dongmei SUN ; Yi HE ; Mei MO ; Xiaoxiao ZHANG ; Linhua ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):272-279
To explore the advantages of traditional Chinese medicine (TCM) and integrative TCM-Western medicine approaches in the treatment of diabetic microvascular complications (DMC), refine key pathophysiological insights and treatment principles, and promote academic innovation and strategic research planning in the prevention and treatment of DMC. The 38th session of the Expert Salon on Diseases Responding Specifically to Traditional Chinese Medicine, hosted by the China Association of Chinese Medicine, was held in Beijing, 2024. Experts in TCM, Western medicine, and interdisciplinary fields convened to conduct a systematic discussion on the pathogenesis, diagnostic and treatment challenges, and mechanism research related to DMC, ultimately forming a consensus on key directions. Four major research recommendations were proposed. The first is addressing clinical bottlenecks in the prevention and control of DMC by optimizing TCM-based evidence evaluation systems. The second is refining TCM core pathogenesis across DMC stages and establishing corresponding "disease-pattern-time" framework. The third is innovating mechanism research strategies to facilitate a shift from holistic regulation to targeted intervention in TCM. The fourth is advancing interdisciplinary collaboration to enhance the role of TCM in new drug development, research prioritization, and guideline formulation. TCM and integrative approaches offer distinct advantages in managing DMC. With a focus on the diseases responding specifically to TCM, strengthening evidence-based support and mechanism interpretation and promoting the integration of clinical care and research innovation will provide strong momentum for the modernization of TCM and the advancement of national health strategies.
2.Imaging Measurement of the Safe Distances of Acupuncture at Fengfu (GV 16) in Children Aged 4 to 8 Based on CT Three-Dimensional Reconstruction
Kun LI ; Tianyi WANG ; Xing WANG ; Zhijun LI ; Peng WU ; Yang YANG ; Yunteng HAO ; Hailong ZHAO ; Yuan MA ; Shaojie ZHANG
Journal of Traditional Chinese Medicine 2026;67(14):1523-1527
ObjectiveTo measure the distance from the surface of Fengfu (GV 16) to the deep important bony structures in children aged 4 to 8 years based on CT three-dimensional reconstruction technology, thereby providing imaging reference data for clinical acupuncture safe operations in terms of different age groups and needle insertion angles. MethodsCervical CT image data were collected from healthy children aged 4 to 8 years with five age groups (4-, 5-, 6-, 7-, 8-year-old groups), 20 cases in each group. The images were imported into Mimics 21.0 software for three-dimensional reconstruction. The straight-line distances from the skin model surface of the Fengfu (GV 16) to the first underlying bony barrier (such as the lower edge of the occipital bone, the posterior arch of the atlas vertebra) were measured at intervals of 5° on both the transverse section (0° ± 35°) and the sagittal section (40° upward to 40° downward on the diagonal). The correlation between the measured distance, age, and angle was analyzed. ResultsIn the transverse and sagittal sections, the measured distance from the skin surface to the underlying bone of Fengfu (GV 16) at each angle increased with age. In the transverse section, the increase was relatively small within the 0° to 20° angle range, whereas a more pronounced increase was observed when the angle exceeded 20°; at measurement angles of 30° to 35°, the distance of the skin surface to the bone at Fengfu (GV 16) in the 7- and 8-year-old groups was significantly greater than that in the 4-year-old group (P<0.05). In the sagittal section, the measured distance from the skin surface to the bone at Fengfu (GV 16) was shortest and changed greatly at oblique upward angles of 15° to 40° within each age group, and increased markedly at near-vertical angles of 0° to 10°; it was longest at oblique downward angles of -40° to -5° and showed relatively gradual changes. ConclusionThis study obtained the imaging distance data from Fengfu (GV 16) to the surrounding bony structures in children aged 4 to 8 years through three-dimensional modeling, finding that this distance has clear age and angle dependence, which can provide quantitative evidence for developing individualized and precise safe acupuncture schemes at Fengfu (GV 16) in pediatric clinical practice.
3.Imaging Measurement of the Safe Distances of Acupuncture at Fengfu (GV 16) in Children Aged 4 to 8 Based on CT Three-Dimensional Reconstruction
Kun LI ; Tianyi WANG ; Xing WANG ; Zhijun LI ; Peng WU ; Yang YANG ; Yunteng HAO ; Hailong ZHAO ; Yuan MA ; Shaojie ZHANG
Journal of Traditional Chinese Medicine 2026;67(14):1523-1527
ObjectiveTo measure the distance from the surface of Fengfu (GV 16) to the deep important bony structures in children aged 4 to 8 years based on CT three-dimensional reconstruction technology, thereby providing imaging reference data for clinical acupuncture safe operations in terms of different age groups and needle insertion angles. MethodsCervical CT image data were collected from healthy children aged 4 to 8 years with five age groups (4-, 5-, 6-, 7-, 8-year-old groups), 20 cases in each group. The images were imported into Mimics 21.0 software for three-dimensional reconstruction. The straight-line distances from the skin model surface of the Fengfu (GV 16) to the first underlying bony barrier (such as the lower edge of the occipital bone, the posterior arch of the atlas vertebra) were measured at intervals of 5° on both the transverse section (0° ± 35°) and the sagittal section (40° upward to 40° downward on the diagonal). The correlation between the measured distance, age, and angle was analyzed. ResultsIn the transverse and sagittal sections, the measured distance from the skin surface to the underlying bone of Fengfu (GV 16) at each angle increased with age. In the transverse section, the increase was relatively small within the 0° to 20° angle range, whereas a more pronounced increase was observed when the angle exceeded 20°; at measurement angles of 30° to 35°, the distance of the skin surface to the bone at Fengfu (GV 16) in the 7- and 8-year-old groups was significantly greater than that in the 4-year-old group (P<0.05). In the sagittal section, the measured distance from the skin surface to the bone at Fengfu (GV 16) was shortest and changed greatly at oblique upward angles of 15° to 40° within each age group, and increased markedly at near-vertical angles of 0° to 10°; it was longest at oblique downward angles of -40° to -5° and showed relatively gradual changes. ConclusionThis study obtained the imaging distance data from Fengfu (GV 16) to the surrounding bony structures in children aged 4 to 8 years through three-dimensional modeling, finding that this distance has clear age and angle dependence, which can provide quantitative evidence for developing individualized and precise safe acupuncture schemes at Fengfu (GV 16) in pediatric clinical practice.
4.Semaphorin 3A promotes pathological cardiac hypertrophy: an experimental study
Lifei WU ; Jiaojiao ZHANG ; Xing ZHANG ; Donghang LI ; Hongbo WANG ; Jimin CAO
Acta Universitatis Medicinalis Anhui 2026;61(7):1215-1222
ObjectiveTo investigate the effect of Semaphorin 3A (Sema3A) on the progression of pathological cardiac hypertrophy. MethodsWild-type C57BL 6J mice, Sema3A global overexpressing (Sema3A/Cre-ERTM) mice, and their littermate controls (Cre-ERTM) were used, with 6 mice per group. A pressure-overload induced cardiac hypertrophy model was established via transverse aortic constriction (TAC), with a sham-operated group (Sham) as the control. Cardiac hypertrophy was assessed by gross morphology, heart weight/body weight ratio (HW/BW), heart weight/tibia length ratio (HW/HL), and heart weight/lung weight ratio (HW/PW). Cardiac function was evaluated by measuring ejection fraction (EF) and fractional shortening (FS) via echocardiography. In heart tissues, the mRNA level of atrial natriuretic peptide (ANP) and Sema3A were detected by RT-qPCR, Sema3A protein level was detected by western blot, morphological structure was detected by hematoxylin and eosin (HE) staining, level of fibrosis was detected by Masson’s trichrome staining, and angiogenesis was detected by immunohistochemical detection of CD31. For in vitro experiments, rat H9C2 cardiomyocytes were treated with angiotensin Ⅱ (Ang Ⅱ) to induce hypertrophy, with PBS-treated cells as the control. After 48 hours, the mRNA expression of ANP, B-type natriuretic peptide (BNP) and Sema3A were measured by RT-qPCR, and Sema3A protein level was assessed by western blot. ResultsAt the animal level, compared with the sham group, mice subjected to TAC showed significantly increased mRNA levels of ANP in cardiac tissue, as well as markedly elevated mRNA and protein levels of Sema3A (all P<0.05). Compared with the Cre-ERTM + TAC group, the Sema3A/Cre-ERTM + TAC group exhibited more pronounced cardiac hypertrophy, greater ventricular wall thickening, higher HW/BW, HW/HL, and HW/PW ratios, more significant reductions in EF and FS, more severe cardiac fibrosis, and a significant decrease in cardiac CD31 expression levels (all P<0.05). At the cellular level, compared with the control group, H9C2 cells treated with Ang Ⅱ displayed significantly increased mRNA levels of ANP and BNP, along with markedly elevated mRNA and protein levels of Sema3A (all P<0.05). ConclusionSema3A promotes the progression of pressure overload-induced cardiac hypertrophy by inhibiting angiogenesis.
5.Impacts of ionizing radiation dose on NADPH oxidase expression in mouse intestine
Zhuojun WU ; Zhifei HUANG ; Jiangyi LI ; Xing WANG ; Ling GUO ; Guirong DING
Chinese Journal of Radiological Medicine and Protection 2025;45(5):399-407
Objective:To investigate the effects of different doses of ionizing radiation on the changes in nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and reactive oxygen species (ROS) levels in the intestines of mice.Methods:C57BL/6 mice aged 6-8 weeks were randomly assigned to four groups (0 Gy, 0.1 Gy, 0.2 Gy, and 0.5 Gy; n=10/group) and subjected to single whole-body irradiation using a 60Co γ-ray source at a dose rate of 13 mGy/min. At 20 weeks post-irradiation, jejunal, ileal, and colonic tissues were collected. Immunohistochemistry, Western blotting, and reverse transcription-polymerase chain reaction (RT-PCR) were employed to assess mRNA and protein expression of NADPH oxidase components. Hydrogen peroxide (H 2O 2) levels and the expression of Nuclear Factor-kappa B (NF-κB), a transcriptional regulator of Dual Oxidase 2 (DUOX2), were also measured. Results:Compared with the 0 Gy group, mice in the 0.5 Gy group exhibited shortened villus length in the jejunum, villus fusion in the ileum, and increased crypt spacing in the colon, with statistically significant differences ( t=2.48, P < 0.05). No significant differences were observed in other dose groups compared to the 0 Gy group ( P > 0.05).The expression of H 2O 2 in the jejunum, ileum, and colon of the 0.1 Gy group was significantly elevated compared to the 0 Gy group ( t=4.12, 3.12, 3.12; P < 0.05). In the 0.5 Gy group, H 2O 2 expression in the jejunum and colon increased nearly twofold relative to the 0 Gy group ( t=8.67, 8.69; P < 0.05).At 20 weeks post-irradiation, DUOX2 protein expression levels in the jejunum, ileum, and colon were markedly higher in irradiated mice than in the 0 Gy group ( t=3.03, 10.29, 2.74; P < 0.05). DUOX2 mRNA levels in the jejunum, ileum, and colon of the 0.1 Gy group were significantly upregulated compared to the 0 Gy group ( t=12.75, 4.12, 11.14; P < 0.05). Additionally, NOX4 mRNA expression increased in the jejunum of the 0.2 Gy group ( t=4.54, P < 0.05) and in the ileum of the 0.1 Gy group ( t=4.13, P < 0.05).The nuclear factor kappa-B (NF-κB), a transcriptional regulator of DUOX2, showed an upward trend in expression in the jejunum, ileum, and colon of the 0.1 Gy group compared to the 0 Gy group, with statistically significant differences ( t=8.73, 8.18, 7.02; P < 0.05). Conclusion:Low-dose radiation induces long-term effects on the intestinal tract. Specifically, 0.5 Gy irradiation causes mild morphological alterations in the jejunum, ileum, and colon, while 0.1 Gy irradiation promotes the upregulation of DUOX2, a NADPH oxidase, in intestinal tissues.
6.Support vector machine model based on gray matter volume for identifying amyotrophic lateral sclerosis and analysis of relevant brain regions
Shan WU ; Haining LI ; Qiuli ZHANG ; Qianqian DUAN ; Xinyi YU ; Xing QIN ; Fangfang HU ; Jiaoting JIN ; Jingxia DANG ; Ming ZHANG
Chinese Journal of Medical Imaging Technology 2025;41(7):1051-1055
Objective To explore the value of support vector machine(SVM)model based on gray matter volume(GMV)for identifying amyotrophic lateral sclerosis(ALS),also to analyze the relevant brain regions.Methods MR 3D T1WI data of 60 ALS patients(ALS group)and 60 healthy volunteers(control group)were retrospectively analyzed.Taken GMV of each brain region obtained by voxel-based morphometry as the input features.F-score analysis was used to select feature with the highest classification accuracy to construct SVM model.Receiver operating characteristic curve was drawn to evaluate the efficacy of SVM model for identifying ALS,and top 10%was used as the weight threshold to obtain gray matter brain regions contributed the most to this model.Results SVM model constructed based on the top 40%GMV features had the highest classification accuracy(82.50%),with sensitivity,specificity and area under the curve(AUG)of 85.05%,80.40%and 0.890,respectively.The left precentral gyrus,left anterior cingulate gyrus and paracingulate gyrus,right middle temporal gyrus,opercular part of left inferior frontal gyrus,right dorsolateral superior frontal gyrus,left temporal pole:middle temporal gyrus,right superior occipital gyrus,orbital part of right middle frontal gyrus,right calcarine fissure and surrounding cortex,right fusiform gyrus were the top 1-10 gray matter brain regions contributed to this model.Conclusion ALS had specific GMV change pattern.SVM model based on GMV could be used to effectively identify ALS,while the left precentral gyrus was the most contributive brain region to this model.
7.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
8.Study on testing methods for maximum nebulization rate of medical ultrasonic nebulizer
Xing-cai YUAN ; Tao LI ; Shao-wu SHI ; Peng WANG ; Yuan LIAO ; Zheng FAN
Chinese Medical Equipment Journal 2025;46(11):84-90
The medical ultrasonic nebulizer was introduced in terms of composition,working principle and testing principle and method of the maximum nebulization rate.The testing characteristics of the volumetric and gravimetric methods were compared.A series of experiments were conducted using the whole-unit gravimetric approach.The initial liquid charge was indicated to be the primary factor affecting the maximum nebulization rate,and the influence increased significantly when the nebulizer's nominal volume got expanded.References were provided for medical testing staffs in selecting testing methods.
9.A Randomized Controlled Clinical Study on the Treatment of Knee Osteoarthritis with Cold-Dampness Arthralgia Obstruc-tion by Shangke Lengtong Patch
Li ZHANG ; Liang DING ; Zhengquan HUANG ; Wei MEI ; Runlin XING ; Songjiang YIN ; Peng WU ; Xi-aochen LI ; Zhenyuan MA ; Nongshan ZHANG ; Jun MAO ; Peimin WANG
Journal of Nanjing University of Traditional Chinese Medicine 2025;41(3):393-398
OBJECTIVE To explore the effectiveness and possible mechanism of Shangke Lengtong Patch in treating knee osteo-arthritis with cold-dampness arthralgia obstruction.METHODS A total of 70 patients who met the inclusion criteria of knee osteoar-thritis with cold-dampness arthralgia obstruction in the Orthopedics Department of Affiliated Hospital of Nanjing University of Chinese Medicine from November to December 2024 were randomly divided into an experimental group and a control group,with 35 cases in each group.During the treatment,1 case dropped out of the experimental group,3 cases dropped out of the control group,and 1 case was discontinued.The experimental group was treated with Shangke Lengtong Patch,and the control group was treated with Compound Nanxing Zhitong Ointment.The WOMAC scores and TCM syndrome scores of the two groups before and after treatment were compared to comprehensively evaluate the clinical efficacy.The changes in the expression levels of CGRP,substance P,HMGB1,IL-1β,CX-CL12,and CXCR4 in the serum of the two groups were detected by ELISA.RESULTS After 3,7,and 14 d of treatment,the WOMAC scores and TCM syndrome scores of the two groups were significantly reduced(P<0.05,P<0.01),and the score of aggrava-ted cold in the experimental group was better than that in the control group at 7 d of treatment(P<0.05);after 14 d of treatment,the expression levels of CGRP,substance P,HMGB1,IL-1β,CXCL12,and CXCR4 in the serum of the two groups were significantly re-duced(P<0.05),and there was no statistical difference between the two groups.CONCLUSION Shangke Lengtong Patch can sig-nificantly relieve the pain symptoms of knee osteoarthritis patients with cold-dampness arthralgia obstruction and improve the joint func-tion of patients.It may improve synovial inflammation by inhibiting the HMGB1/CXCL12/CXCR4 pathway,thereby exerting a thera-peutic effect.
10.Efficacy of non-invasive prenatal testing of fetal free DNA in maternal peripheral blood in fetuses with increased nuchal translucency
Mengyao NI ; Xiangyu ZHU ; Wei LIU ; Leilei GU ; Peixuan CAO ; Ying YANG ; Xing WU ; Chunxiang ZHOU ; Honglei DUAN ; Jie LI
Chinese Journal of Perinatal Medicine 2025;28(2):113-118
Objective:To explore the efficacy of non-invasive prenatal testing (NIPT) of fetal free DNA in maternal peripheral blood in fetuses with increased nuchal translucency (NT).Methods:A retrospective analysis was conducted on 1 184 singleton pregnant women that underwent chromosomal microarray analysis (CMA) at Nanjing Drum Tower Hospital, Nanjing University Medical School from June 2014 to December 2022 due to fetal increased NT (≥3.0 mm). These subjects were categorized based on whether the increased NT was accompanied by other high-risk factors into isolated increased NT without advanced maternal age (further subdivided into 3.0 mm≤NT<3.5 mm, 3.5 mm≤NT<4.0 mm, and NT≥4.0 mm subgroups), isolated increased NT with advanced maternal age, increased NT with nasal bone abnormalities, increased NT with other soft markers, and increased NT with structural abnormalities groups. Assuming the sensitivity and specificity of NIPT and expanded NIPT at this center were both 100%, genomic abnormalities outside the detection range of NIPT or expanded NIPT were termed as residual risk of NIPT or expanded NIPT. Chi-square test and Bonferroni correction were used to compare the residual risks of NIPT and expanded NIPT among the three subgroups of isolated increased NT without advanced maternal age group. Results:(1) In the group of isolated increased NT without advanced maternal age: For the 3.0 mm≤NT<3.5 mm subgroup (329 cases), 19 abnormalities were detected by CMA [12 cases of chromosome aneuploidy, seven cases of pathogenic copy number variation (pCNV)], with residual risks of NIPT and expanded NIPT both at 2.1% (7/329). For the 3.5 mm≤NT<4.0 mm subgroup (173 cases), 29 abnormalities were detected by CMA (17 cases of chromosome aneuploidy, nine cases of pCNV, three cases of chromosome unbalanced translocation), with residual risks of NIPT at 8.1% (14/173) and expanded NIPT at 7.5% (13/173). For the NT≥4.0 mm subgroup (270 cases), CMA detected abnormalities in 70 cases (50 cases of chromosome aneuploidy, 16 cases of pCNV, three cases of unbalanced translocations, and one case of sex chromosome abnormality combined with pCNV). The residual risk of NIPT was 12.2% (33/270), and the residual risk of expanded NIPT was 7.0% (19/270). The residual risks of NIPT and expanded NIPT in the 3.0 mm≤NT<3.5 mm subgroup were lower than those in the 3.5 mm≤NT<4.0 mm and NT≥4.0 mm subgroups (Bonferroni correction, all P<0.017). (2) In the group of 92 cases with isolated increased NT and advanced maternal age, CMA detected abnormalities in 36 cases (29 cases of chromosome aneuploidy, five cases of pCNV, one case of trisomy 21 combined with sex chromosome abnormality, and one case of trisomy 18 combined with sex chromosome abnormality). The residual risk of NIPT was 7.6% (7/92), and that of expanded NIPT was 5.4% (5/92). (3) In the group of 49 cases with increased NT combined with nasal bone abnormalities, CMA detected abnormalities in 24 cases (23 cases of chromosome aneuploidy and one case of pCNV). The residual risks of NIPT and expanded NIPT were both 2.0% (1/49). (4) In the group of 26 cases with increased NT combined with other soft markers, CMA detected abnormalities in nine cases (six cases of chromosome aneuploidy, one case of pCNV, and two cases of chromosome unbalanced translocations). The residual risks of NIPT and expanded NIPT were both 11.5% (3/26). (5) In the group of 245 cases with increased NT combined with structural abnormalities, CMA detected abnormalities in 121 cases (107 cases of chromosome aneuploidy, seven cases of pCNV, four cases of chromosome unbalanced translocations, one case of trisomy 21 combined with trisomy 20, and two cases of trisomy 18 combined with sex chromosome abnormalities). The residual risk of NIPT was 16.7% (41/245), and that of expanded NIPT was 4.1% (10/245). Conclusions:For isolated NT≥3.5 mm or NT≥3.0 mm combined with other high-risk factors, chorionic villus sampling in early pregnancy can be recommended, advancing the timing of prenatal diagnosis from the second trimester to the first trimester. For fetuses with isolated 3.0 mm≤NT<3.5 mm, the 2.1% residual risk of chromosomal abnormalities should be fully informed during counseling, even if the risk of NIPT is low.

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