Objective:To explore the risk factors of autogenous arteriovenous fistula (AVF) aneurysms (AVFAs) in maintenance hemodialysis (MHD) patients.Methods:The patients who used internal arteriovenous fistula (end to side anastomosis) of cephalic vein-radial artery at wrist as vascular access in Hainan Provincial People′s Hospital from June 1 to June 30, 2021 were selected as the research objects. The patients were divided into AVFAs group and non-AVFAs group according to whether AVF formed AVFAs. The clinical data and laboratory examination results between the two groups were compared. Binary logistic regression model was used to analyze the risk factors for the formation of AVFAs.Results:A total of 170 MHD patients were enrolled in this study, including 111 males (65.3%) and 59 females (34.7%), with age of (51.65±12.70) years old and dialysis age of (57.03±49.25) months. There were 33 cases in AVFAs group and 137 cases in non-AVFAs group. The incidence of AVFAs was 19.4%. Compared with non-AVFAs group, the proportion of males ( χ2=4.934, P=0.026) and the levels of serum uric acid ( t=2.547, P=0.012) and serum albumin ( t=2.122, P=0.010) in AVFAs group were higher; The age ( t=-2.210, P=0.028), the proportion of diabetes nephropathy ( χ2=11.788, P=0.001), systolic blood pressure ( t=-1.994, P=0.048) and total cholesterol ( t=-2.174, P=0.031) were lower; The diameter of anastomosis was wider ( Z=-3.224, P=0.001); Mantel-Haenszel chi square test analysis showed that dialysis age ( χ2=53.832, OR=0.518, P<0.001), AVF service time ( χ2=51.355, OR=0.516, P<0.001), and brachial artery blood flow ( χ2=25.315, OR=0.331, P<0.001) were correlated to the formation of AVFAs. The results of multivariate logistic regression analysis showed that males ( OR=10.005, 95% CI 1.875-53.394, P=0.007), longer dialysis age ( OR=1.341, 95% CI 1.104-1.628, P=0.003), longer AVF use time ( OR=1.187, 95% CI 1.002-1.405, P=0.047), higher brachial artery blood flow ( OR=1.002, 95% CI 1.000-1.004, P=0.028) and lower total cholesterol ( OR=0.388, 95% CI 0.172-0.875, P=0.022) were the independent risk factors for the formation of AVFAs. Conclusions:The incidence of AVFAs in MHD patients is 19.4%. Males, long dialysis age, long AVF use time, high brachial artery blood flow and low total cholesterol level are the independent risk factors for the formation of AVFAs.

Objective:To explore the prevalence and risk factors of sarcopenia in patients with maintenance dialysis (MHD).Methods:It was a cross-sectional study. Patients who received MHD treatment in the Blood Purification Center of Hainan Provincial People's Hospital in October 2019 were included as study subjects. The patients were divided into sarcopenia group and non-sarcopenia group according to whether they had sarcopenia or not. Chest CT imaging and laboratory examination data were collected. Dual-energy X-ray absorptiometry was used to measure the skeletal muscle mass. Chi-square test or Mantel-Haenszel trend chi-square test was used to compare the clinical data of patients with and without sarcopenia. Multivariate logistic regression equation was used to analyze the risk factors of sarcopenia.Results:A total of 182 MHD patients were enrolled in the study, and the prevalence of sarcopenia was 33.5% (61/182). The proportions of age ≥60 years old, diabetic nephropathy, tunneled-cuffed catheter, body mass index <18 kg/m 2, serum albumin <40 g/L, low density lipoprotein cholesterol ≥3.37 mmol/L, left ventricular ejection fraction <50%, chest CT-suspected pulmonary tuberculosis (PTB) and PTB in sarcopenia group were higher than those in non-sarcopenia group (all P<0.05). Multivariate logistic regression analysis results showed that left ventricular ejection fraction <50% (≥50% as a reference, OR=3.250, 95% CI 1.035-10.206, P=0.044), low-density lipoprotein cholesterol ≥3.37 mmol/L (<3.37 mmol/L as a reference, OR=6.354 ,95% CI 1.675-24.108, P=0.007), chest CT-suspected PTB (normal as a reference, OR=7.433, 95% CI 1.531-36.083, P=0.013), and PTB (normal as a reference, OR=28.871, 95% CI 3.208-259.872, P=0.030) were independent influencing factors of sarcopenia in MHD patients. Conclusions:The prevalence of sarcopenia is higher in MHD patients. Blood low-density lipoprotein cholesterol ≥3.37 mmol/L, ejection fraction <50%, chest CT-PTB and suspected PTB are independent risk factors of sarcopenia in MHD patients. Correcting left ventricular systolic function, regulating blood lipids and preventing PTB as early as possible can reduce the prevalence of sarcopenia in MHD patients.