Úvod: Infekce arteriovenózního zkratu (AV) pro hemodialýzu (HD) je spojená s rizikem život ohrožujícího krvácení, rozvojem sepse, vznikem metastatických infekčních ložisek a v neposlední řadě i zánikem zkratu. Urgence řešení infikovaného zkratu je základem úspěchu při jeho zachování. Kazuistiky: Na dvou případech prezentujeme užití parciální resekce jako úspěšné metody řešení pozdní infekce AV. V kazuistice 1 byla resekce provedena pro infekci nativního arteriovenózního zkratu (AVF) se dvěma defekty nad aneuryzmaty odvodné žíly. V kazuistice 2 byla provedena parciální resekce a náhrada u vhojeného protetického arteriovenózního zkratu (AVG) pro infekci vpichu po HD. U obou pacientů zůstaly AV průchodné, bez dalších známek infekce v pooperačním sledování, bez nutnosti zavést dočasný HD katétr. Závěr: Založení nové AV je u pacientů limitováno kvalitou žilního a arteriálního řečiště. Je třeba užít všech možných chirurgických, intervenčních a nechirurgických prostředků k bezpečnému zachování již založeného AV. Při dodržení požadavků včasné indikace je parciální resekce metodou volby u infekcí AV a dává možnost vyhnout se zavedení dialyzačního katétru.
Introduction: Infection of arteriovenous fistula (AV) used for hemodialysis (HD) is associated with massive bleeding, sepsis development, formation of metastatic infectious foci, and a high risk of AV loss. Urgent management of an infected AV is crucial for successful treatment and AV salvage. Case reports: We present the use of partial resection as a successful method of dealing with late AV infection in two cases. In case 1, the resection was performed due to an infection of the native arteriovenous fistula (AVF) with two defects above the drainage vein aneurysms. In case 2, partial resection and replacement of the prosthetic arteriovenous fistula (AVG) were done due to an infection of HD puncture site. The AVs remained patent in both cases, with no further signs of infection postoperatively and, most importantly, without the need to use a temporary HD catheter. Conclusion: The establishment of a new AV is limited by the quality of the venous and arterial systems. All surgical, interventional and non-surgical means should be used to safely maintain the created AV patent. Provided that the requirements of an early indication are met, partial resection of the AV is the method of choice for AV infections and allows us to avoid using a permanent dialysis catheter in our patients.
- MeSH
- aneurysma chirurgie MeSH
- arteriovenózní píštěl * chirurgie etiologie MeSH
- arteriovenózní zkrat * metody škodlivé účinky MeSH
- dialýza ledvin škodlivé účinky MeSH
- lidé středního věku MeSH
- lidé MeSH
- výsledek terapie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
AIMS: High-flow arteriovenous fistula (AVF) for haemodialysis leads to profound haemodynamic changes and sometimes to heart failure (HF). Cardiac output (CO) is divided between the AVF and body tissues. The term effective CO (COef) represents the difference between CO and AVF flow volume (Qa) and better characterizes the altered haemodynamics that may result in organ hypoxia. We investigated the effects of Qa reduction on systemic haemodynamics and on brain oxygenation. METHODS AND RESULTS: This is a single-centre interventional study. Twenty-six patients on chronic haemodialysis with high Qa (>1500 mL/min) were indicated for surgical Qa reduction for HF symptoms and/or signs of structural heart disease on echocardiography. The included patients underwent three sets of examinations: at 4 months and then 2 days prior and 6 weeks post-surgical procedure. Clinical status, echocardiographical haemodynamic assessment, Qa, and brain oximetry were recorded. All parameters remained stable from selection to inclusion. After the procedure, Qa decreased from 3.0 ± 1.4 to 1.3 ± 0.5 L/min, P < 0.00001, CO from 7.8 ± 1.9 to 6.6 ± 1.5 L/min, P = 0.0002, but COef increased from 4.6 ± 1.4 to 5.3 ± 1.4 L/min, P = 0.036. Brain tissue oxygen saturation increased from 56 ± 11% to 60 ± 9%, P = 0.001. CONCLUSIONS: Qa reduction led to increased COef. This was explained by a decreased proportion of CO running through the AVF in patients with Qa > 2.0 L/min. These observations were mirrored by higher brain oxygenation and might explain HF symptoms and improved haemodynamics even in asymptomatic high Qa patients.
- MeSH
- arteriovenózní píštěl * MeSH
- arteriovenózní zkrat * MeSH
- dialýza ledvin MeSH
- hemodynamika MeSH
- lidé MeSH
- mozek diagnostické zobrazování MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
The objective of this prospective randomized single-center study was to compare primary and secondary patency rates, number of percutaneous transluminal angioplasty (PTA) interventions and cost-effectiveness among PTA, deployment of a stent, or a stent graft in the treatment of failing arteriovenous dialysis grafts (AVG) due to restenosis in the venous anastomosis or the outflow vein. Altogether 60 patients with failing AVG and restenosis in the venous anastomosis or the outflow vein were randomly assigned to either PTA, placement of a stent (E-Luminexx®) or stent graft (Fluency Plus®). After the procedure, patients with stent or stent graft received dual antiplatelet therapy for the next three months. Follow-up angiography was scheduled at 3, 6, and 12 months unless requested earlier due to suspected stenosis or malfunction of the access. Subsequently, angiography was performed only if requested by the clinician. During a median follow-up of 22.4 (IQR=5.7) months patients with PTA, stent, or stent graft required 3.1±1.7, 2.5±1.7, or 1.7±2.1 (P=0.031) secondary PTA interventions. The primary patency rates were 0, 18 and 65% at 12 months and 0, 18 and 37% at 24 months in the PTA, stent, and stent graft group respectively (P<0.0001). The cost of the procedures in the first two years was €7,900±€3,300 in the PTA group, €8,500±€4,500 in the stent group, and €7,500±€6,200 in the stent graft group (P=0.45). We conclude that the treatment of failing dialysis vascular access by the deployment of a stent graft significantly improves its primary patency rates and decreases the number of secondary PTA interventions; however, the reduction in costs for maintaining AVG patency is not significant.
- Publikační typ
- časopisecké články MeSH
- Publikační typ
- abstrakt z konference MeSH
- Publikační typ
- abstrakt z konference MeSH
Cíl: Cílem naší studie bylo porovnat střednědobou průchodnost a ekonomickou výhodnost prosté balónkové angioplastiky, implantace stentu a implantace stentgraftů v léčbě stenóz dialyzačních zkratů. Metodika: Mezi červencem 2013 a květnem 2015 jsme zařadili do tří větví prospektivní randomizované studie celkem 46 pacientů (věk 67 ? 14 let, 33 % mužů) s časnou restenózu venózní anastomózy nebo odvodné žíly protetického dialyzačního zkratu. U 14 pacientů jsme provedli prostou balónkovou angioplastiku (PTA), 14 pacientům byl implantován stent a 18 pacientům stent-graft. Dva pacienti byli ze studie vyřazeni (jeden s implantovaným stentgraftem a jeden s prostou PTA), protože u nich nebyla v prvních 3 měsících po výkonu provedena angiografie. Mezi skupinami jsme porovnali primární průchodnost intervenovaného segmentu a hemodialyzačního zkratu celkově. Pacienti, kteří dokončili sledování po 12 měsících, byli zahrnuti do ekonomické analýzy. Výsledky: Dvanáctiměsíční primární průchodnost intervenovaného segmentu byla 0% u PTA, 29% u stentů, a 76% u stent-graftů (p < 0,0001). Šestiměsíční, resp. dvanáctiměsíční primární průchodnost zkratu celkově byla 8% a 0% u PTA, 50% a 14% u stentů, 47% a 35% u stentgraftů (p = 0,014 a p = 0,007). Průměrný počet rePTA sledovaného místa byl 2,89 u PTA 1,64 u stentů a 0,6 u stentgraftů (p = 0,0008). Průměrný počet všech rePTA byl 6,0 u PTA, 3,73 u stentů, 2,4 u stentgraftů (p = 0,0094). Průměrné náklady na udržení průchodnosti zkratu v prvním roce zahrnující i vstupní intervenci činily 215 054 Kč u PTA, 182 297 Kč u stentů a 161 934 Kč u stentgraftů. Závěr: Implantace stentgraftů do stenóz venózní anastomózy a odvodně žíly protetických hemodialyzačních zkratů vykazuje signifikantně lepší primární průchodnost, méně reintervencí a nižší finanční náklady v porovnání s prostou PTA a stentingem.
Aim: The aim of our study is to compare mid-term patency and cost-effectiveness of balloon angioplasty and implantation of stent or stent graft in the treatment of hemodialysis arteriovenous graft restenosis. Methods: Between July 2013 and May 2015, 46 patients (age 67 ? 14 years, 33% males) were randomized into three study arms for treatment of an early recurrent hemodialysis shunt restenosis located in the venous anastomosis of a prosthetic graft or in the outflow vein (index segment). Fourteen patients were treated with balloon angioplasty (PTA), 14 patients with stenting and 18 patients with implantation of a stent-graft. Two patients (one with stent-graft and one with PTA) were excluded because no follow-up angiography was performed in the first three months after the procedure. Primary patency rates of the index segment and the hemodialysis shunt were compared among the groups and patients who completed a twelve month follow-up were included in the cost analysis. Results: The twelve-month primary patency of the index segment was 0% for PTA group, 29% for stent group and 76% for stent graft group (p < 0.0001). Six-month primary patency of vascular access was 8% for PTA group, 50% for stent group and 47% for stent graft group (p = 0.014). Twelve-month primary patency of vascular access was 0% for PTA group, 14% for stent group and 35% for stent graft group (p = 0.007). The mean number of reinterventions of the index segment was 2,89 by PTA group, 1,64 by stent group and 0,6 by stent graft group. The mean number of all vascular access reinterventions was 6,0 by PTA group, 3,73 by stent group and 2,4 by stent graft group (p = 0.0094). The mean cost for all endovascular interventions during the 12 months follow-up including primary interventions and all reinterventions was 215 054 CZK by PTA group, 182 297 CZK by stent group and 161 934 CZK by stent graft group. Conclusion: Treatment of an early recurrent hemodialysis shunt restenosis located in the venous anastomosis of a prosthetic graft or in the outflow vein by stent graft implantation results in significantly better primary patency, decreased need for reinterventions, and lower cost of the endovascular treatment in the first year after the primary intervention compared to PTA and stenting.
- MeSH
- analýza nákladů a výnosů statistika a číselné údaje MeSH
- angioplastika ekonomika statistika a číselné údaje MeSH
- arteriovenózní zkrat MeSH
- cévní protézy ekonomika statistika a číselné údaje MeSH
- dialýza ledvin MeSH
- dítě MeSH
- klinická studie jako téma statistika a číselné údaje MeSH
- lidé středního věku MeSH
- lidé MeSH
- okluze cévního štěpu etiologie chirurgie radiografie MeSH
- prospektivní studie MeSH
- průchodnost cév MeSH
- recidiva MeSH
- senioři MeSH
- stenty ekonomika statistika a číselné údaje MeSH
- výsledek terapie MeSH
- Check Tag
- dítě MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- práce podpořená grantem MeSH
- randomizované kontrolované studie MeSH
- srovnávací studie MeSH
Závěrečná zpráva o řešení grantu Interní grantové agentury MZ ČR
1 svazek : grafy ; 30 cm
1. Improvement of the diagnostics of cardiovascular diseases (especially heart failure) in patients with chronic kidney disease 2. 2. Mid- and long-term effects of vascular access flow on the heart 3. The effect of intradialytic hypotension on cerebral perfusion and oxygenation
1. Zpřesnění diagnostiky kardiovaskulráních onemocnění, především srdečního selhání u pacientů s chronickým onemocněním ledvin. 2. Středně- a dlouhodobý vliv průtoku zkratem na srdce 3. Vliv intradialytické hypotenze na perfúzi a oxygenaci centrálního nervového systému.
- MeSH
- cévní přístupy MeSH
- chronická nemoc MeSH
- chronické selhání ledvin MeSH
- dialýza ledvin MeSH
- hemodynamika MeSH
- hypotenze MeSH
- srdeční selhání MeSH
- Konspekt
- Patologie. Klinická medicína
- NLK Obory
- kardiologie
- nefrologie
- NLK Publikační typ
- závěrečné zprávy o řešení grantu IGA MZ ČR
INTRODUCTION: The quality of the life in patients requiring long term hemodialysis is directly proportional to the long-term patency of their vascular access. Basilic vein transposition for vascular access (BAVA) represents a suitable option for creating a tertiary native vascular access for hemodialysis on the upper extremities for patients requiring long term hemodialysis. The purpose of the study is to compare BAVAs with arteriovenous grafts (AVG). METHOD: Data collection was based on selecting all of the patients with BAVA created in the time period in between January 1996 and August 2011. A questionnaire was created and sent to the selected hemodialysis centers. The resulting set of data was statistically analyzed and evaluated. RESULTS: In the time period between 1 January 1996 and August 2011, arteriovenous access for hemodialysis was created in 6754 patients (7203 procedures in total). Out of these patients, 175 BAVAs were created. Our patient database of those undergoing the BAVA procedure consisted of 98 females (56%) and 77 males (44%) with an average age of 64.5 years. The prevalence of diabetes mellitus was 60% (105 patients). Primary patency after 12 months was 68.8%, 24 months 59.7%, 36 months 53.8, 48 months 53.8%, and 60 months 50%. Primary assisted patency after 12 months was 89.9%, 24 months 84.6%, 36 months 77.8%, 48 months 77.9%, 60 months 70.8%. Secondary patency after 12 months was 89.4%, 24 months 86.9%, 36 months 81%, 48 months 78.9%, 60 months 75.7%. Twenty-nine BAVAs (16.5%) were obliterated. CONCLUSION: Patients benefit from this type of procedure due to the longer patency of a native arteriovenous access, as well as a lower incidence of infectious complications.
- Publikační typ
- časopisecké články MeSH
BACKGROUND: The patency of arteriovenous grafts (AVG) for hemodialysis is mostly limited by growing stenoses that lead to decreasing of blood flow, thromboses and finally to access failure. The aim of this study was to find out if detection of any pathology by duplex Doppler ultrasonography (DDU) early after creation of AVG could identify those with lower survival. METHODS: We retrospectively enrolled AVG examined by DDU in our center within 40 days after their creation during the last 10 years. The findings were divided into 4 subgroups: (1a) normal finding, (1b) DDU risk factor (low flow volume, medial calcinosis of the feeding artery, presence of intimal hyperplasia in the venous anastomosis), (2a) non-significant or (2b) significant stenosis. The primary outcome measure was the cumulative survival of people with AVGs, and the secondary was the primary (unassisted) survival. All patients underwent DDU surveillance every 3 months with pre-emptive treatment of significant stenoses. RESULTS: Overall, 340 cases were found; the median follow-up was 565 days. Normal DDU finding had 60% cases, DDU risk factor 18% cases, non-significant stenosis 13% cases and significant stenosis 9% cases. Occurrence of early significant stenosis was associated with high risk of access loss (hazards ratio (HR) 14.73; 95% CI 5.10-42.58; p < 0.0001). Similarly, the presence of a DDU risk factor and of a non-significant stenosis were related to significantly shorter access lifespan (HR 2.86; 95% CI 1.10-7.40; p = 0.03 and HR 2.83; 95% CI 1.12-7.17; p = 0.03, respectively). CONCLUSION: DDU examination of AVG early after their creation can identify those at higher risk and may contribute to individualize the surveillance strategy.
- MeSH
- arteriovenózní zkrat * MeSH
- cévní protézy * MeSH
- cévy - implantace protéz MeSH
- chronické selhání ledvin terapie MeSH
- dialýza ledvin metody MeSH
- dospělí MeSH
- duplexní dopplerovská ultrasonografie MeSH
- kohortové studie MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- neointima ultrasonografie MeSH
- okluze cévního štěpu ultrasonografie MeSH
- polytetrafluoroethylen MeSH
- retrospektivní studie MeSH
- rizikové faktory MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- vaskulární kalcifikace ultrasonografie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH