Results: A total of 107 sessions were performed and renal function was recovered in 7 cases. Complications: 18 flow problems, 12 circuit coagulation episodes, 13 fever episodes, 14 hypotension, 13 transfusions, 5 anxiolytic treatment and 7 catheter changes. Conclusions: The long term with haemodialysis HCO filters are effective in removing the light chains and recovering the renal function. The role of nursing is important including a complex technique and giving a human response to the debut of this severe disease

Introduction: Different first-generation methods exist for the detection of stenosis. Objective: To determine the accuracy of first-generation methods in detecting stenosis in native arteriovenous fistulas. Method: Retrospective observational study. Sample: Patients with functioning native arteriovenous fistulas. First-generation methods include physical examination, manual tests, pulse increase test and arm elevation test, indirect methods, Kt/V, and arteriovenous fistula recirculation. The diagnosis of stenosis was confirmed by Doppler ultrasound. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of first-generation methods based on Doppler ultrasound were calculated. Results: Sample 39 patients, 79.48% male. Ultrasound detected 19 stenoses, nonsignificant. Physical examination: sensitivity 31.5%, specificity 80%, PPV 60%, NPV 55.1%, accuracy 56.4%. Pulse rise test: sensitivity 5.2%, specificity 90%, PPV 33.3%, NPV 50%, accuracy 48.7%. Arm elevation test: sensitivity 52.6%, specificity 70%, PPV 62.5%, NPV 60.8%, accuracy 61.5%. Indirect methods: sensitivity 15.7%, specificity 55%, PPV 25%, NPV 40.7%, accuracy 35.9%. Kt/V: sensitivity 10.5%, specificity 75%, PPV 28.5%, NPV 46.8%, accuracy 43.5%. AVF recirculation: sensitivity 10.5%, specificity 100%, PPV 100%, NPV 54.1%, accuracy 56.4%. Conclusions: All first-generation methods have high specificity and low sensitivity. The degree of stenosis (significant or non-significant) could influence the sensitivity of the physical examination but not the specificity. The arm elevation test is the most accurate first-generation method of detecting stenosis.

Background/Objectives: Weight gain after kidney transplantation is frequent but heterogeneous, often accompanied by changes in body composition that influence long-term outcomes. This study analysed one-year changes in body compartments and their demographic and clinical determinants. Methods: A prospective cohort of 112 adult kidney recipients transplanted between September 2020 and June 2022 at a Spanish tertiary hospital was followed. Body weight, muscle mass, fat mass, visceral fat and total body water were assessed by multi-frequency bioelectrical impedance at discharge, and at 3, 6 and 12 months. Associations with sociodemographic, clinical and comorbidity variables were examined using repeated-measures ANOVA and comparative tests. Results: At 12 months, mean weight gain was 3.6 ± 6.5 kg (5.1%). Increases were greater in men, younger patients, non-dialysis candidates, those with previous transplantation and living donor grafts. Muscle mass rose during the first three months and then stabilised, with greater gains in men and haemodialysis patients. Fat mass decreased initially and then increased, particularly in women, younger recipients and living donor transplants. Visceral fat progressively increased after three months, with higher levels in men and older patients. Total body water declined in women, younger recipients and first transplant patients. Patients with new-onset diabetes gained less weight, while smokers gained more. Conclusions: Post-transplant body composition is shaped by sex, age, BMI, comorbidities and donor type. Monitoring compartments beyond body weight may allow early detection of adverse metabolic trajectories. Tailored nutritional and lifestyle interventions are needed to optimise long-term outcomes.

Background/Objectives: Individuals with chronic kidney disease often face significant physical and clinical challenges, such as muscle weakness, fatigue, and reduced cardiorespiratory capacity, that impact their quality of life. Physical activity has emerged as an effective intervention to counteract these effects, with clinical guidelines recommending exercise as a standard treatment for kidney transplant recipients. The aim of this study was to assess pretransplant physical activity levels in a cohort of transplant patients and analyze their relationships with cardiovascular risk factors. Methods: A cross-sectional, analytical, and correlational study was conducted from September 2020 to June 2022 with a sample of 122 kidney transplant recipients assessed before kidney transplantation. Sociodemographic data, anthropometric data, comorbidities, renal replacement therapy types, and clinical and analytical data were collected from the patients’ clinical records. Physical activity was assessed via the International Physical Activity Questionnaire. Results: The average time spent waiting for transplantation was 423 ± 405 days, which was longer (387 ± 524) in the group of those under 65 years than in those over 65 years (194 ± 256) (p = 0.010). The median energy expenditure was 1742 (IQR = 1719) METs. In addition, 15.6% of the participants reported inactivity. Men reported higher physical activity levels (median: 2076 METs/week; IQR: 2037) than women did (median: 1386 METs/week; IQR: 1238). A higher level of physical activity was found in non-dialysis patients, overweight patients, and those with a history of stroke. A significant positive correlation was found between physical activity levels and serum urea. Conclusions: Increased physical activity levels were observed in men and in participants under 65 years of age. Patients with cardiovascular risk factors, such as hypertension, diabetes mellitus, dyslipidemia, overweight and obesity, reported lower activity levels, whereas those with a prior history of cerebrovascular accidents engaged in more physical activity. This study highlights the importance of assessing physical activity and promoting exercise for chronic kidney disease patients awaiting kidney transplantation. Further research is needed to explore the evolution of physical activity in this population and its impact post-transplantation.

Introduction: Postoperative isometric exercises promote the maturation of native arteriovenous fistulas.Objective: To determine whether the use of a handgrip influences arteriovenous fistula maturation and to analyse its relationship with sex.Material and Method: Prospective observational study. Population: patients with mature radiocephalic fistulas who performed handgrip exercises. Exercise protocol: initiation 15 days after surgery. A total of 20 repetitions were performed 5 times per day with progressive increase in resistance every 15 days. Ultrasound measurements: at 30 and 75 days.Results: The sample included a total of 21 patients, 66.7% men. Men achieved significantly higher radial artery peak systolic velocity and venous diameter in all ultrasound measurements (P<0.05). At 75 days, those who used a maximum resistance of 40 kg showed greater radial artery peak systolic velocity (114.1 vs 85.3; P=0.049), venous diameter (6.87 vs 5.83; P=0.021), and vascular access flow (1465 vs 795; P=0.002) vs those who used 24 kg. In addition, they showed greater radial artery peak systolic velocity (114.1 vs 98.2; P=0.032) and venous diameter (6.87 vs 6.24; P=0.046) vs those who used 32 kg. The maximum resistance used was significantly correlated with radial artery peak systolic velocity (r=0.5; P=0.004), venous diameter (r= 0.57; P=0.006), and vascular access flow (r=0.58; P=0.027). When stratified by sex, a significant correlation was observed only in men.Conclusions: Men use higher resistance levels than women in handgrip isometric exercises. Furthermore, men achieve better morphological and haemodynamic parameters in all ultrasound measurements.

Introduction: Weight gain after kidney transplant has been documented, among other factors, due to reduced physical activity in the early months, increased appetite, and the use of immunosuppressants and corticosteroids. Objective: To understand post-transplant weight gain. Indeed, to determine the relationship between weight gain and comorbidities, as well as, to evaluate changes in body composition. Material and Method: Prospective study, September 2020 to April 2023. Weight measurements were taken at 0, 3, 6, and 12 months. Results: Ninety-two patients were analyzed, 68.5% male, with an average age of 58±18.5 years. Pre-transplant weight was 72.5 (±5.8) kg, and at 12 months, it was 75.10 (±15.7) kg. Differences were found between first-time and repeat transplants (p=0.020). In the analysis of repeated measures of weight (p=0.022), differences were observed between month 0 and the third month, month 0 and one year, and between the third month and one year.In muscle mass (p<0.001), differences were seen when comparing month 0 with the third, sixth, and twelfth months. Fat mass differed when comparing the third month with the twelfth month, and visceral fat (p=0.032) differed when comparing the third month with the sixth and twelfth months. Conclusion: After a kidney transplant, weight gain occurs, especially after the sixth month, reaching 5% per year. Muscle mass increases more than fat mass. People who received kidneys from living donors, those with previous transplants, and those with hypertension and/or cardiovascular disease experience greater weight gain.