Objective:To translate and revise the Arteriovenous Fistula Assessment Scale (AVF-AS), test the reliability and validity of the Chinese version of AVF-AS.Methods:The modified Brislin translation model was used to translate, back translate and cross culture adjust AVF-AS, forming the Chinese version of AVF-AS. Using the convenient sampling method, 220 hemodialysis patients from the First Affiliated Hospital of Zhengzhou University were selected for investigation from July to September 2022. Two weeks later, 30 patients were randomly selected for retesting. The valid data were used for project analysis and reliability and validity evaluation.Results:The Chinese version of AVF-AS consisted of 3 factors and 18 items. Consistency level between evaluators was 0.94, the item level content validity index was 0.83-1.00, average scale level content validity index was 0.94, and the calibration validity was 0.68.Three common factors(autogenous arteriovenous fistula blood flow, stenosis and ischemia, puncture location) were extracted from exploratory factors, and the cumulative variance contribution rate was 75.255%. The total scale's Cronbach α was 0.946, the half reliability of each dimension was 0.826 - 0.898, and the test-retest reliability was 0.907.Conclusions:The Chinese version of AVF-AS has good reliability and validity, and can be used as an effective tool to evaluate the autogenous arteriovenous fistula functional status of hemodialysis patients in China.

Objective:To evaluate the cervical elasticity in pregnant women with singleton pregnancies exhibiting symptoms of threatened preterm labor using E-cervix elastography, and provide a basis for assessing the risk of preterm birth.Methods:This prospective cohort study included pregnant women with singleton pregnancies between 20 +0 and 32 +6 weeks of gestation and no history of preterm birth who developed symptoms of threatened preterm labor and attended the obstetrics outpatient clinic of the Hunan Provincial Maternal and Child Health Care Hospital from May 2022 to May 2023. Several cervical elastography data, including cervical length (CL), hardness ratio (HR), internal ostium (IOS), and external ostium (EOS), were obtained using E-cervix technology, and the differences in these data were compared between women with different pregnancy outcomes (preterm or full-term birth) or different CLs. Statistical analysis was performed using covariance analysis (adjusted for gestational age), Chi-square test or corrected Chi-square test, and Pearson correlation analysis. Results:A total of 120 pregnant women were included, with 39 (32.5%) in the preterm group and 81 (67.5%) in the full-term group. There were 41 women (34.2%) with CL≤25 mm and 79 (65.8%) with CL>25 mm. Among the 41 women with CL≤25 mm, 26 had preterm birth and 15 delivered at term. Compared with the full-term group, the preterm group had a lower cervical HR [(35.75±8.94)% vs. (61.30±10.69)%, F=156.88], but higher IOS and EOS (0.47±0.13 vs. 0.31±0.09, F=54.99; 0.45±0.11 vs. 0.34±0.08, F=34.57) (all P<0.001). The patients with CL≤25 mm had a lower cervical HR [(43.17±14.32)% vs. (58.09±13.94)%, F=26.03], but higher IOS and EOS (0.46±0.14 vs. 0.32±0.08, F=38.71; 0.44±0.12 vs.0.34±0.08, F=21.36) as compared with those with CL>25 mm, with all differences being statistically significant (all P<0.001). Among the women with CL≤25 mm, preterm birth cases had lower cervical HR but higher IOS and EOS than those delivered at term (all P<0.001). In both CL≤25 mm and CL>25 mm groups, the preterm birth rate was higher in patients with HR<50% than in those with HR≥50% [95.5% (21/22) vs. 5/19, χ2=21.01, P<0.001; 61.9% (13/21) vs. 0.0% (0/58), corrected χ2=38.59, P<0.001]. Besides, an increased preterm birth rate was also observed in patients with HR<40% as compared with those with HR≥40% regardless of the CL [CL≤25 mm: 18/18 vs. 34.8% (8/23), χ2=18.51, P<0.001; CL>25 mm: 11/14 vs. 3.1% (2/65), corrected χ2=42.42, P<0.001]. Pearson correlation analysis showed that there was a significant positive correlation between CL and HR ( r=0.51, P<0.001). Conclusion:E-cervix elastography can quantify the hardness of cervical tissue, and identify truly "soft" cervices that are associated with high risk of preterm birth, showing great potential as a more efficient new technology for predicting preterm birth.

Objective:To explore the effects of nursing program-based dietary intervention combined with family support in hemodialysis patients.Methods:The clinical data of 180 hemodialysis patients admitted to the First Affiliated Hospital of Zhengzhou University from September 2019 to September 2020 were selected by convenient sampling and retrospectively analyzed. The patients were divided into control group and observation group with 90 cases in each group according to different nursing methods. Patients in the control group received routine dietary care, while patients in the observation group underwent nursing program-based dietary intervention combined with family support on this basis. The nutritional status and dialysis compliance were compared between the two groups at the time of enrollment, 3 months, and 6 months after the intervention.Results:3 and 6 months after the intervention, the levels of body mass index, total protein, albumin, prealbumin, total lymphocyte count, and white blood cell count in the two groups increased, and the observation group was better than the control group, with statistically significant differences ( P<0.05) . At 3 and 6 months after the intervention, the scores of each dimension of compliance in the two groups increased, and the scores of each dimension in the observation group were better than those in the control group, with statistically significant differences ( P<0.05) . Conclusions:Nursing program-based dietary intervention combined with family support can improve the nutritional status and dialysis compliance of hemodialysis patients, which is worth promoting in clinical practice.