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Senad Hasanspahić

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INTRODUCTION Peritoneal dialysis and hemodialysis are complementary ways of treating end-stage renal failure. Changing the dialysis modality from hemodialysis to peritoneal dialysis is a rare and poorly studied phenomenon. MATERIALS AND METHODS Retrospective cohort study conducted on the population of adult patients with end-stage chronic renal failure who were treated at the Nephrology Clinic of the Clinical Center of the University of Sarajevo in the period from 2006 to 2023. A total of 109 adult patients, whose medical documentation was complete and who were in the peritoneal dialysis program at the Nephrology Clinic of the Clinical Center of the University of Sarajevo during the observed period, were included in this study. One group started the treatment with peritoneal dialysis, and the other with hemodialysis. Demographic data were collected for each patient: age, gender, underlying kidney disease, comorbidities (heart disease and diabetes), duration of treatment modality, data on modality change, complications and treatment outcomes. Data from physical and electronic patient histories were used. RESULTS Total of 109 adult patients were included in this study. They are divided into two groups. Group 1 (n=99) in which peritoneal dialysis was the first treatment modality and Group 2 (n=10) in which haemodialysis was the first treatment modality, but in which patients, after a certain time, were transferred to peritoneal dialysis. The median age of patients in Group 1 was 60 (-/-14.07) years and 54 (-/+12.23) years for Group 2. Within Group 1 the most common cause of terminal renal failure was diabetic nephropathy (n=40, 40.4%) and nephroangiosclerosis (n=24, 24.24%). The mean age of onset of peritoneal dialysis was 60 (-/-14.07) years, while the mean age of cessation of peritoneal dialysis was 63 (±13.69) years. The average duration of peritoneal dialysis treatment was 38.36(±34.14) months. During the stay at peritoneal dialysis, death was recorded in 63 patients (62.38%). The number of patients who replaced peritoneal dialysis treatment with hemodialysis was 26. The most common reason for switching to haemodialysis was insufficiency of peritoneal dialysis (n=13, 14%). After switching to haemodialysis, the average length of staying on it was 10.22 months. The reason for discontinuation of haemodialysis was death (n=17, ) or transplantation (n=1, 3.7%). Kaplan-Meier test shown worse outcome in patients with haemodialyis first than peritoneal dialysis first. CONCLUSION Changing the dialysis modality carries with it a high risk of mortality, especially in the first month. Changing the way of active treatment with dialysis speaks in favor of severe comorbidities.

Aim To assess morphological characteristics of carotid blood vessels in uremic patients before to the initiation of the dialysis treatment, and corelate data with various dialysis therapy modules. Methods The study included 30 patients with end-stage renal disease (ERDS) prior to commencing dialysis, 30 patients treated with haemodialysis and 30 patients treated with continuous ambulatory peritoneal dialysis. The control group consisted of 15 subjects with normal kidney function (eGFR>60ml/min). Carotid intima-media thickness (CIMT), as well as lipid status values (cholesterol, triglycerides, low-density lipoprotein (LDL), high-density lipoprotein (HDL), apolipoprotein A, apolipoprotein B) were evaluated. Results The significant difference in CIMT was detected between the control and haemodialysis groups (p<0.001), and between the control and the peritoneal dialysis group (p=0.004). In patients in the predialysis group, CIMT was influenced by cholesterol (p=0.013), HDL (p=0.044), LDL (p=0.001) and ApoB (p=0.042) values. A significant difference in CIMT was proved between the haemodialysis and predialysis group of patients (p<0.001). The only variable from the patient's lipometabolic profile significantly associated with the change in IMT in uremic patients was HDL. A significant difference was found in the average value for systolic blood pressure (p<0.001) and diastolic blood pressure (p=0.018) in patients before starting the dialysis treatment compared to patients treated with other dialysis methods. Conclusion Patients on haemodialysis treatment had a significantly greater CIMT, which is in relation with a higher cardiovascular risk.

Background: To evaluate atherosclerotic changes in carotid arteries (CCA) in uremic patients before and after 18 months of continuous ambulatory peritoneal dialysis (CAPD) treatment, and to evaluate the impact of dyslipidemia and CAPD treatment on vascular remodeling. Materials and Methods: We conducted a longitudinal, prospective study during 2020 and 2021 at the Clinic for Nephrology, Clinical Center University of Sarajevo. Patients with end-stage renal disease were included and were followed during 18 months of CAPD treatment. All patients were treated using commercially prepared biocompatible balanced dialysis solutions. Carotid intima-media thickness (IMT) and atherosclerotic plaques on the common carotid artery (CCA) were measured by echotomography. Results: A total of 50 patients were included and were followed during 18 months of CAPD treatment. Lipid values in the serum of patients with CAPD were significantly lower after 18 months of CAPD treatment compared to the values before treatment, while the value of high-density lipoprotein (HDL) was significantly increased after 18 months of CAPD treatment. The values of IMT and the diameter of the CCA compared to the basal values were significantly lower (P < 0.001). Conclusion: We demonstrated significantly lower lipid values and higher HDL levels following CAPD treatment. Correct selection of the targeted pharmacological intervention can substantially impact the regression of vascular changes in patients on peritoneal dialysis.

Introduction: Starting from the point that the chronic kidney disease (CKD) is chronic, inflammatory and hypercoagulable state characterized by an increase in procoagulant and inflammatory markers high cardiovascular morbidity and mortality in these patients could be explained. Aim: The aim of the research was to monitor inflammatory markers and procoagulants in various stages of kidney disease (stage 1-4). Materials and Methods: The research included 120 subjects older than 18 years with CKD stages 1-4 examined and monitored in Clinic of Nephrology, University Clinical Centre Sarajevo over a period of 24 months. The research included determining the following laboratory parameters: serum creatinine, serum albumin, C-reactive protein, leukocytes in the blood, plasma fibrinogen, D-dimer, antithrombin III, coagulation factors VII (FC VII) and coagulation factor VIII (FC VIII). Results: With the progression of kidney disease (CKD stages 1-4), there was a significant increase of inflammatory and procoagulant markers: CRP, fibrinogen and coagulation factor VIII, and an increase in the average values of leukocytes and a reduction in the value of antithrombin III, but without statistical significance. Also, there were no significant differences in the values of D-dimer and coagulation factor VII. Conclusion: The progression of kidney disease is significantly associated with inflammation, which could in the future be useful in prognostic and therapeutic purposes. Connection of CKD with inflammation and proven connection of inflammation with cardiovascular risk indicates the potential value of some biomarkers, which could in the future identify as predictors of outcome and could have the benefit in the early diagnosis and treatment of cardiovascular disease in CKD.

Aim: The aim of the research was to compare the relationship between inflammatory biomarkers and procoagulants with kidney function assessed by using cystatin C, serum creatinine, and eGFR and determine the sensitivity of cystatin C, serum creatinine and eGFR to total cardiovascular morbidity in patients with CKD stages 1-4. Methods: The research included 120 patients older than 18 years with CKD stages 1-4 monitored over a period of 24 months. Results: Serum cystatin C correlates with fibrinogen (p<0.01), serum albumin (p<0.01), D-dimer (p<0.05), antithrombin III (p<0.01) strongly in relation to the evaluation of kidney function based on serum creatinine and eGFR. By following cystatin C, creatinine and eGFR with comparison of ROC to total cardiovascular morbidity, the highest sensitivity in relation to the presence of cardiovascular morbidity shows cystatin C, then eGFR and the lowest, creatinine, with a significant difference between cystatin C and serum creatinine (p<0.05). Conclusion: Serum cystatin C is more strongly correlated with some biomarkers (fibrinogen, serum albumin, D-dimer, antithrombin III), while simultaneously showing a stronger sensitivity in relation to total cardiovascular morbidity compared with the assessment of kidney function based on serum creatinine and eGFR.

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