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The clinical data of maintenance hemodialysis (MHD) patients from twenty hemodialysis centers in Guizhou province from June to September 2020 were collected by cross-sectional study. The patients were divided into AFD group and non-AFD group according to whether AFD had occurred. LTI was measured by body composition monitor. The results showed that the incidence of AFD in 2 781 MHD patients was 30.0% (835/2 781). Median LTI level was 15.2 (13.2, 17.5) kg/m 2. The LTI level in the AFD group was higher than that in the non-AFD group ( P < 0.05). According to the tertiles of LTI, low LTI group (LTI ≤ 13.9 kg/m 2) had the highest incidence of AFD (35.5%, 334/940), and the high LTI group had the lowest incidence of AFD (26.3%, 241/916), and the difference among the three groups was statistically significant ( χ2=20.182, P < 0.001). Multivariate logistic regression analysis showed that low LTI group as the reference, the risk of AFD in moderate LTI group (13.9 kg/m 2 < LTI ≤ 16.6 kg/m 2) and high LTI group were associated with the 20.0% ( OR=0.800, 95% CI 0.650-0.986, P=0.036) and 22.8% ( OR=0.772, 95% CI 0.616-0.966, P=0.024) decrease, respectively. These results suggest that low LTI level is independently associated with an increased risk of AFD in MHD patients.
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INTRODUCCIÓN: Existe una alta incidencia de fracturas en pacientes con enfermedad crónica terminal. Esto se debe en parte a la enfermedad óseo mineral del enfermo renal crónico y en parte a la alta prevalencia de debilidad muscular en esta población. OBJETIVO: Nuestro objetivo fue evaluar cuáles son los determinantes de fuerza muscular medida por fuerza de prensión palmar (FPP) en nuestra población de pacientes en hemodiálisis crónica. MATERIAL Y MÉTODOS: Estudio de corte transversal en adultos de un centro de hemodiálisis. Se registró la FPP y el índice de masa magra (IMM). Se registraron los valores de albumina, magnesio y otros parámetros serológicos. Utilizamos un análisis de regresión lineal múltiple para evaluar los predictores de FPP. RESULTADOS: Analizamos 139 pacientes (hombres: mujeres = 88:51, edad 60.7 ± 16), 18 fueron excluidos. La media de albúmina: 3.8 +/- 0.47 mg/dl, la mediana de tiempo en hemodiálisis: 37 meses (15-83), 25% (n= 35) fueron definidos como sarcopénicos y 21.5% (n= 30) tenían antecedentes de diabetes. En el análisis univariado el magnesio presentó correlación positiva con la FPP (ß 0.19 p 0.02). En el análisis multivariado todas las siguientes continuaron siendo correlativas con la FPP y estadísticamente significativas (R2 0.61 p <0.001): albumina (ß:.4.36 p 0.02), IMM (ß: 1.44 p <0.001), edad (ß -0.10 p 0.04), sexo (ß 6.21 p 0.007), diabetes (ß -5,08 p 0.005). CONCLUSIÓN: Edad, diabetes, albúmina, sexo e IMM están independientemente asociados con la FPP en pacientes en hemodiálisis. Los niveles séricos de magnesio presentaron asociación en el análisis univariado
INTRODUCTION: There is a great incidence of fractures in patients suffering from end-stage chronic disease. This is partly caused by chronic kidney disease-mineral bone disorder and partly by the high prevalence of muscle weakness in these patients. OBJECTIVE: Our objective was to identify the determining factors of muscle strength measured by means of handgrip strength (HGS) in chronic hemodialysis patients. METHODS: A cross-sectional study was conducted on adult patients in a hemodialysis center. Handgrip strength (HGS) and lean mass index (LMI) were measured, as well as albumin and magnesium values and other serological parameters. Multiple linear regression was used to assess HGS predictors. RESULTS: We analyzed 139 patients (88 men and 51 women; age: 60.7 ± 16); 18 subjects were excluded. Mean albumin values: 3.8 +/- 0.47 mg/dL; median hemodialysis time: 37 months (15-83). From the total number of patients, 25% (n=35) were found to be sarcopenic and 21.5% (n=30) had a history of diabetes. The univariate analysis showed a positive correlation between magnesium and HGS (ß 0.19 p 0.02). According to the multivariate analysis, all the following showed a correlation with HGS and were statistically significant: (R2 0.61 p <0.001): albumin (ß:.4.36 p 0.02); LMI (ß: 1.44 p <0.001); age (ß -0.10 p 0.04); sex (ß 6.21 p 0.007); diabetes (ß -5,08 p 0.005). CONCLUSION: Age, diabetes, albumin values, sex and LMI are independently associated with HGS in hemodialysis patients. Serum magnesium levels showed an association in the univariate analysis
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Humanos , Índice de Massa Corporal , Diálise Renal , Força da Mão , Debilidade Muscular , Falência Renal Crônica/complicaçõesRESUMO
Objective To investigate the relationship between body composition and adequacy of dialysis,and analyze the related risk factors for inadequate delivery of hemodialysis.Methods In a prospective clinical trial,two different methods determining dialysis dose were simultaneously applied:Kt/Vdau (conventional method with Daugirdas' formula) and Kt/Vbem [online clearance monitoring (OCM) measurement with Ⅴ measured by body composition monitor (BCM)].Using the value of 1.27 as the boundary,the patients were divided into two groups:Kt/Vbcm ＜ 1.27 group and Kt/Vbcm≥ 1.27 group.Clinical indices were compared between the two groups.Multiple linear regression was applied to analyze the potential impact factors of the difference between Kt/V values calculated by the two methods.Receiver operator characteristic (ROC) curve was applied to analyze meaningful factors.Results A total of 138 maintenance hemodialysis patients with age of (54.9±12.7) years old were enrolled,and 55.1％ of them were males.There was no significant difference between Kt/Vdau and Kt/Vbcm [1.432(1.235,1.718) vs 1.434 (1.244,1.642),P=0.823].Kt/Vdau was incidentally prone to falsely high values due to operative errors,whereas in these cases OCM-based measurement Kt/Vbcm delivered realistic values.An excellent correlation was observed between Kt/Vdau and Kt/Vbcm;the mean difference was 0.07,95％CI (-0.66-0.79);the correlation coefficient was 0.842(0.821-0.862).The patients in Kt/Vbcm≥ 1.27 group had older age,lower body mass index (BMI),lower height and weight,lower total body water (TBW),lower extracellular water,lower intracellular water,and lower lean tissue index (LTI) compared to those in Kt/Vbcm ＜ 1.27 group.Excellent correlations were observed between Kt/Vbcm and TBW or LTI (r=-0.834,P ＜ 0.001;r=-0.721,P ＜ 0.001).ROC curve analysis showed that the sensitivity and specificity of predicting inadequate delivery of hemodialysis were 87.1％ and 86.5％,with a threshold of 30 L for TBW.It also showed that the sensitivity and specificity of predicting inadequate delivery of hemodialysis were 60.4％ and 94.6％,with a threshold of 11.05 kg/m2 for LTI.Conclusions BCM can give more accurate parameters of urea distribution volume,thus modifying the result of Kt/V.TBW and LTI are important risk influencing factors for inadequately dialysis,and special attention should be paid to patients with TBW ＞ 30 L or LTI ＞ 11.05 kg/m2.
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BACKGROUND: This study compared nutritional parameters in hemodialysis (HD) subjects and controls using bioimpedance analysis (BIA) and investigated how BIA components changed before and after HD. METHODS: This cross-sectional study included 147 subjects on maintenance HD from two hospitals and 298 propensity score-matched controls from one healthcare center. BIA was performed pre- and post-HD at mid-week dialysis sessions. RESULTS: Extracellular water/total body water (ECW/TBW) and waist-hip ratio were higher in the HD patients; the other variables were higher in the control group. The cardiothoracic ratio correlated best with overhydration (r = 0.425, P < 0.01) in HD subjects. Blood pressure, hemoglobin, creatinine, and uric acid positively correlated with the lean tissue index in controls; however, most of these nutritional markers did not show significant correlations in HD subjects. Normal hydrated weight was predicted to be higher in the pre-HD than post-HD measurements. Predicted ultrafiltration (UF) volume difference based on pre- and post-HD ECW/TBW and measured UF volume difference showed a close correlation (r 2 = 0.924, P < 0.01). Remarkably, the leg phase angle increased in the post-HD period. CONCLUSION: The estimated normal hydrated weight using ECW/TBW can be a good marker for determining dry weight. HD subjects had higher ECW/TBW but most nutritional indices were inferior to those of controls. It was possible to predict UF volume differences using BIA, but the post-HD increase in leg phase angle, a nutritional marker, must be interpreted with caution.