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Background. Tunneled catheters are becoming increasingly used as a permanent dialysis access. Easy way of insertion and good long-term patency make them competitive to fistulas in some groups of patients. Methods. Late complications and survival of 180 tunneled catheters inserted from June 2010 to December 2013 in 171 unselected hemodialysis patients were analyzed. Results. The cumulative time of observation was 2103.5 patient-months and median observation was 9 months (range of 0.5-45 months). Only 19 out of 180 catheters were removed due to complications (12 for infections, 4 due to malfunction and 3 because of mechanical damage). Majority of catheters were removed electively: 27 after maturation of arterio-venous fistula (AVF), 4 after kidney transplant, 5 after transfer to peritoneal dialysis and 3 due to the recovery of renal function. At the end of the observation, 58 catheters were still in use and 64 patients had died with functioning catheter. When censored for elective catheter removal and patient death, 88.2% of catheters survived for 1 year. Catheter survival was significantly better in older patients (over 65 years, in comparison to patients < 65 years, p = 0.046). Conclusions. Nearly 90% of all inserted catheters gave reliable dialysis access as long as it was needed. Among them, over 30% of the inserted catheters were in use at the end of the observation period, and over 30% of patients had died with a functioning catheter. The results of tunneled catheters survival are encouraging and they should be taken into consideration during decision-making on vascular access, especially in the older patients.
EN
Malnutrition is a common clinical problem in dialysis patients. So far the management of malnutrition in this population has not been fully successful. The aim of the study was to evaluate the efficacy and safety of use of megestrol acetate suspension in malnourished dialysis patients. Twenty-six hypoalbuminemic (albumin ≤ 3.8 g/dl) dialysis patients took 160 mg of megestrol acetate daily for a period of two months. Anthropometry (dry weight, body mass index) and biochemical measurements of nutrition (serum albumin, triglycerides, total cholesterol) and inflammation (hsCRP, IL-1β, IL-6) were performed on a monthly basis. The treatment led to a statistically significant increase (P < 0.05) in anthropometry and albumin concentration, with no statistically significant changes in total cholesterol, triglycerides and indices of inflammation. Side effects included overhydration, diarrhoea and hyperglycaemia. Thus, megestrol acetate may be an effective therapeutic agent in improving the nutritional status of carefully selected dialysis patients, while it might not mitigate inflammation. Because of the prevalent side effects it must be monitored closely.
EN
Ethylene glycol poisoning is not an uncommon cause of an acute renal injury. In this paper we present case of prolonged renal failure in the course of ethylene glycol intoxication. Due to the low dose of ingested ethylene glycol and concomitant ethanol consumption, the neurodepressive phase of the intoxication was rather mild and patient presented to the hospital on the ninth day after poisoning with established renal failure. The diagnosis of the specific cause of renal injury was facilitated by the renal biopsy.
EN
Background: Inhibition of the renin-angiotensin-aldosterone system (RAAS) with angiotensin converting enzyme inhibitors (ACEI) and/or angiotensin II subtype 1 receptor antagonists (ARB) is a common strategy used in the management of patients with chronic kidney disease (CKD). However, there is no universal therapy that can stop progression of CKD. Pentoxifylline (PTE) is a non-specific phosphodiesterase inhibitor with anti-inflammatory properties. It has been reported to have promising effects in CKD treatment. Methods: In a placebo-controlled, randomized, cross-over study we evaluated the influence of PTE (1200 mg/day) added to RAAS blockade on proteinuria, surrogate markers of tubular injury and oxidative stress-dependent products in 22 non-diabetic patients with proteinuria (0.4-4.3 g per 24h) with normal or declined kidney function [eGFR 37-178 mL/min]. In an eight-week run-in period, therapy using ACEI and/or ARB was adjusted to achieve a blood pressure below 130/80 mm Hg. Next, patients were randomly assigned to one of two treatment sequences: PTE/washout/placebo or placebo/washout/PTE. Clinical evaluation and laboratory tests were performed at the randomization point and after each period of the study. Results: The PTE therapy reduced proteinuria (by 26%) as compared to placebo. There were no differences in α1-microglobulin, urine excretion of N-acetyl-β-d-glucosaminidase (NAG), hsCRP, the urinary excretion of 15-F2t-isoprostane, blood pressure (BP), eGFR and serum creatinine between the PTE and placebo groups. Conclusion: Pentoxifylline may decrease proteinuria in non-diabetic patients with CKD.
EN
Background Analgesics can be sold following medical prescription, but also as over-the-counter (OTC) medications. In patients with chronic kidney disease (CKD), their use could potentially be associated with increased risk of side-effects, due to impaired renal elimination. The aim was to evaluate the epidemiology and indications for the use of OTC analgesics, and the knowledge of their side-effects in patients with CKD. Material and methods A cross-sectional, controlled survey on the use of OTC analgesic drugs was conducted among 180 CKD patients (stage 1-5, dialysis, kidney transplant), compared to 60 controls. Results The proportion of patients using OTC analgesics on a regular basis was higher in the CKD group, compared to controls (18.9% vs. 10.0%, p<0.02). The major indications included musculoskeletal issues, followed by headaches and other. Subgroup analysis revealed that analgesic use was lowest among transplanted patients, in comparison to CKD stage 1-5, and dialysis subjects (10%, 20%, 26%, respectively, p=0.06). Less than half of CKD patients and controls declared any knowledge on potential side-effects of analgesic drugs (45.6% vs. 40.0%, NS). Conclusions The use of OTC analgesics among patients with CKD is higher than in subjects without CKD, with the exception of transplanted patients. The knowledge on the potential side-effect of analgesics is limited.
EN
Background. Dietary supplements (DS) are available over the counter, but patients with impaired renal function are specifically at risk for toxicity when consuming certain DS. The aim of this study was to evaluate the prevalence and characteristics of DS use in patients with chronic kidney disease (CKD). Material and methods. A cross-sectional, controlled DS use survey (22 questions) was conducted among 180 CKD patients (stage 1-5, dialysis, kidney transplant), with 60 patients without CKD serving as controls. Results. DS use did not differ significantly between subjects with and without CKD, unless the CKD patients were on dialysis. In the CKD group, 20% admitted to use DS regularly and 22% did not take the mat all. In the controls, DS consumption was 17% and 13%, respectively (NS). The DS use was higher among women ascompared to men (89% vs. 70%; p < 0.005), and people living in cities versus those living in the country side (81% vs. 63%; p < 0.05). DS most commonly used were: vitamins, minerals, and herbs. Major indications for DS use included: musculoskeletal issues, general health improvement and prevention of urinary tract infections. Subgroup analyses revealed that dialysis patients were characterized by a significantly higher DS use in comparison to CKD stage 1-5 subjects and renal transplant recipients. The decision to introduce DS was made by the physician in 54% of cases; by a pharmacist in 9% of cases, and by the patients themselves in 37%. Only 21% of patients with CKD, and 27% of subjects without CKD, declared knowledge of any possible side-effects associated with DS (NS). Conclusions. The use of DS among patients with CKD is similar to patients without CKD, with the exception of those on dialysis. Vitamins and minerals were the most commonly reported DS consumed. The knowledge on potential side-effectof DS was limited to approximately one-fourth of those surveyed.
EN
Background. There is evidence that dyslipidemia is associated with chronic kidney disease (CKD) and it has been implicated in the progression of renal damage. Optimal management of dyslipidemia should therefore lead to renal benefits. A number of experimental models demonstrate a beneficial effect of statins in ameliorating renal damage. However, the exact mechanism by which statins protect against renal damage remains unclear. Methods. In a placebo-controlled, randomized, cross-over study we evaluated the influence of atorvastatin (ATO) 40 mg/day added to the renin-angiotensin-aldosterone systeme (RAAS) blockade on proteinuria and surrogate biomarkers of tubular damage or injury in 14 non-diabetic patients with proteinuria (0.4-1.8 g per 24 h) with normal or declined kidney function (eGFR 55-153 ml/min). In the eight-week run-in period, therapy using angiotensin converting enzyme inhibitors (ACEI) and/or angiotensin II subtype 1 receptor antagonists (ARB) was adjusted to achieve a blood pressure below 130/80 mm Hg. Next, patients were randomly assigned to one of two treatment sequences: ATO/washout/placebo or placebo/washout/ATO. Clinical evaluation and laboratory tests were performed at the randomization point and after each period of the study. The primary end point of this study was a change in proteinuria measured as 24-h urine protein excretion (DPE). Secondary end points included urine N-acetyl-β-d-glucosaminidase (NAG) and α1-microglobulin (α1m) excretion. Results. The ATO therapy significantly reduced urine excretion of α1m (p=0.033) and NAG (p=0.038) as compared to placebo. There were no differences in proteinuria, blood pressure, eGFR and serum creatinine between the ATO and placebo groups. Conclusion. Atorvastatin treatment is safe and improves biomarkers of tubular damage or injury in non-diabetic patients with CKD.
EN
Background: Analgesics can be sold following medical prescription, but also as over-the-counter (OTC) medications. In patients with chronic kidney disease (CKD), their use could potentially be associated with increased risk of side-effects, due to impaired renal elimination. The aim was to evaluate the epidemiology and indications for the use of OTC analgesics, and the knowledge of their side-effects in patients with CKD. Material and methods: A cross-sectional, controlled survey on the use of OTC analgesic drugs was conducted among 180 CKD patients (stage 1-5, dialysis, kidney transplant), compared to 60 controls. Results: The proportion of patients using OTC analgesics on a regular basis was higher in the CKD group, compared to controls (18.9% vs. 10.0%, p<0.02). The major indications included musculoskeletal issues, followed by headaches and other. Subgroup analysis revealed that analgesic use was lowest among transplanted patients, in comparison to CKD stage 1-5, and dialysis subjects (10%, 20%, 26%, respectively, p=0.06). Less than half of CKD patients and controls declared any knowledge on potential side-effects of analgesic drugs (45.6% vs. 40.0%, NS). Conclusions: The use of OTC analgesics among patients with CKD is higher than in subjects without CKD, with the exception of transplanted patients. The knowledge on the potential side-effect of analgesics is limited.
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