INTRODUCTION: Atrial fibrillation (AF) can cause or aggravate heart failure (HF). Catheter ablation (CA) is an effective treatment for AF. This study focused on the feasibility and outcomes of emergent AF ablation performed during hospitalization for acute HF. METHODS AND RESULTS: We retrospectively investigated patients who underwent emergent CA for AF during hospitalization for acute HF in 2018-2024. Arrhythmia recurrence was the primary endpoint. The combination of arrhythmia recurrence, HF hospitalization, and all-cause death was the secondary endpoint. Patients were censored 1 year after the index procedure. We included 46 patients, 35% females, with median age of 67 [interquartile rage: 61, 72] years and left ventricular ejection fraction (LVEF) of 25 [23, 28]%. Thermal CA was performed in 14 patients, and pulsed field ablation (PFA) in 32 patients. Procedure time was significantly shorter with PFA compared to thermal CA (77 [57, 91] vs. 166 [142, 200] minutes, p < 0.001). Fluoroscopy time was longer with PFA (9.5 [7.6, 12.0] vs. 3.9 [2.9, 6.0] minutes, p < 0.001), with a borderline trend towards higher radiation dose (75 [53, 170] vs. 50 [30, 94] μGy.m2, p = 0.056). Extrapulmonary ablation was frequent (86% and 84% for thermal CA and PFA, p > 0.9). The estimated freedom from the primary endpoint was 79% after PFA and 64% after thermal CA (p = 0.44). The estimated freedom from the secondary endpoint was 76% after PFA and 57% after thermal CA (p = 0.43). LVEF improved by 24% ± 2% (p < 0.001) in patients with the first manifestation of HF and by 14% ± 4% (p = .004) in patients with decompensated HF diagnosed earlier. CONCLUSIONS: Emergent CA of AF during acute HF hospitalization is safe and associated with improved LVEF and good clinical outcomes. In the PFA era, the rate of these procedures is progressively increasing as they are readily available and easy to perform compared to thermal ablation.
- MeSH
- akční potenciály MeSH
- akutní nemoc MeSH
- časové faktory MeSH
- fibrilace síní * patofyziologie chirurgie diagnóza MeSH
- funkce levé komory srdeční * MeSH
- katetrizační ablace * škodlivé účinky MeSH
- lidé středního věku MeSH
- lidé MeSH
- recidiva * MeSH
- retrospektivní studie MeSH
- rizikové faktory MeSH
- senioři MeSH
- srdeční frekvence MeSH
- srdeční selhání * patofyziologie diagnóza terapie mortalita MeSH
- studie proveditelnosti * MeSH
- tepový objem MeSH
- výsledek terapie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- srovnávací studie MeSH
Stereotactic arrhythmia radioablation (STAR) is a novel, non-invasive, and promising treatment option for ventricular arrhythmias (VAs). It has been applied in highly selected patients mainly as bailout procedure, when (multiple) catheter ablations, together with anti-arrhythmic drugs, were unable to control the VAs. Despite the increasing clinical use, there is still limited knowledge of the acute and long-term response of normal and diseased myocardium to STAR. Acute toxicity appeared to be reasonably low, but potential late adverse effects may be underreported. Among published studies, the provided methodological information is often limited, and patient selection, target volume definition, methods for determination and transfer of target volume, and techniques for treatment planning and execution differ across studies, hampering the pooling of data and comparison across studies. In addition, STAR requires close and new collaboration between clinical electrophysiologists and radiation oncologists, which is facilitated by shared knowledge in each collaborator's area of expertise and a common language. This clinical consensus statement provides uniform definition of cardiac target volumes. It aims to provide advice in patient selection for STAR including aetiology-specific aspects and advice in optimal cardiac target volume identification based on available evidence. Safety concerns and the advice for acute and long-term monitoring including the importance of standardized reporting and follow-up are covered by this document. Areas of uncertainty are listed, which require high-quality, reliable pre-clinical and clinical evidence before the expansion of STAR beyond clinical scenarios in which proven therapies are ineffective or unavailable.
- MeSH
- akční potenciály MeSH
- kardiologie * normy MeSH
- komorová tachykardie * patofyziologie chirurgie diagnóza MeSH
- konsensus MeSH
- lidé MeSH
- radiochirurgie * škodlivé účinky normy metody MeSH
- rizikové faktory MeSH
- výběr pacientů * MeSH
- výsledek terapie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- směrnice pro lékařskou praxi MeSH
- Geografické názvy
- Evropa MeSH
Cíl: Zjistit, zda časovaná preemptivní radiofrekvenční (RF) katétrová ablace povede k nižšímu výskytu arytmií a bude spojena s příznivějším klinickým průběhem ve srovnání se samotným CryoMaze u pacientů se strukturálním srdečním onemocněním indikovaným ke konkomitantní chirurgické léčbě fibrilace síní (FiS). Metody: Do studie byli zařazeni pacienti s neparoxysmální FiS podstupující koronární by-pass anebo chlopenní operaci, kteří byli po CryoMaze randomizováni k provedení následné RF katétrové ablace s odstupem 3 měsíců (sekvenční hybridní léčba) nebo ke konzervativnímu postupu. Primárním cílem byla účinnost, tj. rekurence arytmií (FiS nebo síňových tachykardií) bez antiarytmické léčby, což bylo hodnoceno pomocí implantabilních záznamníků. Primárním kompozitním klinickým cílem byla hospitalizace pro rekurenci arytmií, zhoršení srdečního selhání, kardioembolická příhoda nebo významné krvácení. Výsledky: Analyzovali jsme celkem 113 pacientů v hybridní skupině a 116 pacientů v konzervativní skupině, kteří byli sledováni po střední dobu 715 dnů (mezikvartilové rozpětí 528–1 072 dnů). Rekurence arytmií byla v hybridní skupině ve srovnání se samotným CryoMaze významně snížena (41,1 % vs. 67,4 %, HR = 0,38, 95 % CI:0,26–0,57, P < 0,001), stejně jako i výskyt primárního kompozitního cíle (19,9 % vs. 40,1 %, HR = 0,51, 95 % CI: 0,29–0,86, P = 0,012). Celková mortalita se mezi skupinami nelišila (10,6 % vs. 8,6 %, HR = 1,17, 95 % CI: 0,51–2,71, P = 0,71). Komplikace RF katétrové ablace byly relativně vzácné (1,9 %) a nevedly k žádným závažným klinickým konsekvencím. Závěr: Samotný konkomitantní CryoMaze nevede k optimální kontrole arytmií. Preemptivní RF katétrová ablace je bezpečná a vede k významnému snížení výskytu arytmií a následně i k příznivějšímu klinickému průběhu.
Aims: To assess whether the timely pre-emptive radiofrequency (RF) catheter ablation would achieve higher freedom from atrial fibrillation (AF) or atrial tachycardia (AT) and be associated with better clinical outcomes than surgical ablation (CryoMaze) alone in patients with structural heart disease indicated for concomitant AF treatment. Methods: The trial investigated patients with non-paroxysmal AF undergoing coronary artery bypass grafting and/or valve repair/replacement with mandatory concomitant CryoMaze procedure who were randomly assigned to undergo either RF catheter ablation three months post CryoMaze (Hybrid Group) or no further treatment (Surgery Group). The primary efficacy endpoint was the first recurrence of AF/AT without antiarrhythmic drugs as assessed by implantable cardiac monitors. The primary clinical endpoint was a composite of hospitalization for arrhythmia recurrence, worsening of heart failure, cardioembolic event, or major bleeding. Results: We analyzed 113 and 116 patients in the Hybrid and Surgery Groups, respectively, with a median follow-up of 715 (IQR: 528-1072) days. The primary efficacy endpoint was significantly reduced in the Hybrid Group (41.1% vs 67.4%, hazard ratio (HR)= 0.38, 95% confidence interval (CI): 0.26-0.57, P<0.001) as well as the primary clinical endpoint (19.9% vs 40.1%, HR=0.51, 95% CI: 0.29-0.86, P=0.012). The trial groups did not differ in all-cause mortality (10.6% vs. 8.6%, HR=1.17, 95%CI: 0.51-2.71, P=0.71). The major complications of catheter ablation were infrequent (1.9%) and resulted in no clinical sequelae. Conclusions: Concomitant CryoMaze alone leads to suboptimal arrhythmia control. Pre-emptively performed catheter ablation after the CryoMaze procedure was safe and associated with higher freedom from AF/AT and consequently improved clinical outcomes.
- Klíčová slova
- studie SURHYB,
- MeSH
- fibrilace síní * chirurgie terapie MeSH
- katetrizační ablace metody MeSH
- lidé MeSH
- maze procedura metody MeSH
- randomizované kontrolované studie jako téma MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
AIMS: Catheter ablation is an effective treatment method for recurrent ventricular tachycardias (VTs). However, at least in part, procedural and clinical outcomes are limited by challenges in generating an adequate lesion size in the ventricular myocardium. We investigated procedural and clinical outcomes of VT ablation using a novel 'large-footprint' catheter that allows the creation of larger lesions either by radiofrequency (RF) or by pulsed field (PF) energy. METHODS AND RESULTS: In prospectively collected case series, we describe our initial experience with VT ablation using a lattice-tip, dual-energy catheter (Sphere-9, Medtronic), and a compatible proprietary electroanatomical mapping system (Affera, Medtronic). The study population consisted of 18 patients (aged 55 ± 15 years, one woman, structural heart disease: 94%, ischaemic heart disease: 56%, left ventricular ejection fraction: 34 ± 10%, electrical storm: 22%) with recurrent sustained VTs and ≥1 previously failed endocardial RF ablation with conventional irrigated-tip catheter in 66% of patients. On average, 12 ± 7 RF and 8 ± 9 PF applications were delivered per patient. In three-fourths of patients undergoing percutaneous epicardial ablation, spasms in coronary angiography were observed after PF applications. All resolved after intracoronary administration of nitrates. No acute phrenic nerve palsy was noted. One patient suffered from a stroke that resolved without sequelae. Post-ablation non-inducibility of VT was achieved in 89% of patients. Ventricular-arrhythmia-free survival at three months was 78%. CONCLUSION: VT ablation using a dual-energy lattice-tip catheter and a novel electroanatomical mapping system is feasible. It allows rapid mapping and effective substrate modification with good outcomes during short-term follow-up.
- MeSH
- akční potenciály MeSH
- časové faktory MeSH
- design vybavení MeSH
- doba přežití bez progrese choroby MeSH
- dospělí MeSH
- elektrofyziologické techniky kardiologické * MeSH
- katetrizační ablace * metody přístrojové vybavení škodlivé účinky MeSH
- komorová tachykardie * chirurgie patofyziologie diagnóza MeSH
- lidé středního věku MeSH
- lidé MeSH
- prospektivní studie MeSH
- recidiva MeSH
- senioři MeSH
- srdeční katétry * MeSH
- studie proveditelnosti * MeSH
- výsledek terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
INTRODUCTION: Pulsed electric field (PEF) has emerged as a promising energy source for catheter ablation of atrial fibrillation (AF). However, data regarding the in-vivo effect of PEF energy on erythrocytes during AF ablation procedures are scarce. This study aimed to quantify the impact of PEF energy on erythrocyte damage during AF ablation by assessing specific hemolytic biomarkers. METHODS: A total of 60 patients (age: 68 years, males: 72%, serum creatinine: 91 μmol/L) with AF underwent catheter ablation of AF using PEF energy delivered by a multipolar pentaspline Farawave catheter (Farapulse, Boston Scientific, Inc.). Ablation beyond pulmonary vein isolation was performed at the operator's discretion. Peripheral venous blood was sampled for assessing the plasma levels of free hemoglobin (fHb), direct (conjugated) bilirubin, lactate dehydrogenase (LDH), and creatinine before, immediately after the ablation, and on the next day. RESULTS: Following the PEF ablation with duration of [median (interquartile range)] 75 (58, 95) min, with 74 (52, 92) applications and PVI only in 27% of patients, fHb, LDH, and direct bilirubin significantly increased, from 40 (18, 65) to 493 (327, 848) mg/L, from 3.1 (2.6, 3.6) to 6.8 (5.0, 7.9) μkat/L, and from 12 (9, 17) to 28 (16, 44) μmol/L, respectively (all p < .0001). A strong linear correlation was found between the peak fHb and the number of PEF applications (R = 0.81, p < .001). The major hemolysis (defined as fHb >500 mg/L) was predicted by the number of PEF applications with the corresponding area under the receiver operating characteristic curve of 0.934. The optimum cut-off value of >74 PEF applications predicted the major hemolysis with 89% sensitivity and 87% specificity. CONCLUSION: Catheter ablation of AF using PEF energy delivered from a pentaspline catheter is associated with significant intravascular hemolysis. More than 74 PEF applications frequently resulted in major hemolysis. However, the critical amount of PEF energy that may cause kidney injury in susceptible patients remains to be investigated.
- MeSH
- bilirubin krev MeSH
- biologické markery * krev MeSH
- časové faktory MeSH
- design vybavení MeSH
- erytrocyty MeSH
- fibrilace síní * chirurgie diagnóza patofyziologie krev MeSH
- hemoglobiny metabolismus MeSH
- hemolýza * MeSH
- katetrizační ablace * škodlivé účinky přístrojové vybavení MeSH
- kreatinin krev MeSH
- L-laktátdehydrogenasa krev MeSH
- lidé středního věku MeSH
- lidé MeSH
- prediktivní hodnota testů MeSH
- rizikové faktory MeSH
- senioři MeSH
- srdeční katétry MeSH
- výsledek terapie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Závěrečná zpráva o řešení grantu Agentury pro zdravotnický výzkum MZ ČR
nestr.
Úvod: Perzistující fibrilace síní (PeFS) je u pacientů se strukturálním srdečním onemocněním podstupujících kardiochirurgický zákrok běžná. Konkomitantní chirurgická CryoMAZE procedura se jeví jako efektivní léčba, výsledky však kolísají. Sekvenční hybridní přístup spočívající v kombinaci CryoMAZE následované radiofrekvenční katétrovou ablací (RFA) může dosáhnout velké úspěšnosti, nicméně randomizované práce na toto téma chybějí. Metody: Projekt SurHyb je prospektivní, multicentrickou, randomizovanou, otevřenou studií. Pacienti s PeFS budou randomizováni na samotnou CryoMAZE proceduru a na CryoMAZE následovanou RFA. Celkem bude v 5 centrech randomizováno 250 pacientů. Primárním cílem je absence arytmie bez užívání antiarytmických léků, což bude hodnoceno implantabilními EKG Holtery. Primárním kompozitním klinickým cílem je úmrtí z kardiovaskulárních příčin anebo hospitalizace. Hodnoceny budou i další předem určené sekundární cíle. Závěr: Projekt SurHyb představuje první randomizovanou studii u pacientů s PeFS porovnávající samotnou CryoMAZE proceduru s hybridním sekvenčním přístupem.; Background: Persistent atrial fibrillation (PeAF) is common in patients with structural heart disease undergoing cardiac surgery. Concomitant surgical CryoMaze has been shown to be an effective treatment, but success rates vary substantially. The sequential hybrid approach, i.e., CryoMaze followed by the radiofrequency catheter ablation (RFCA), is able to achieve high freedom from PeAF. However, randomized trials are lacking. Methods: The SurHyb Trial is a prospective, multicenter, randomized, open-label study. Patients with PeAF will be randomized to either a CryoMaze procedure alone or CryoMaze followed by RFCA. A total of 250 patients will be randomized at 5 centers. The primary outcome is AF-free survival off antiarrhythmic drugs, which will be assessed by implantable ECG loop recorders. Composite clinical endpoints include cardiovascular death or hospitalization. Several pre-specified secondary endpoints will also be evaluated. Conclusions: This is the first randomized study that compares the surgical CryoMaze procedure alone to a staged, hybrid procedure in patients with PeAF.
- Klíčová slova
- Fibrilace síní, Atrial fibrillation, catheter ablation, randomizovaná kontrolovaná studie, katétrová ablace, chirurgická ablace, cryomaze, hybridní přístup, Surgical ablation, CryoMaze, Hybrid approach, Randomized controlled clinical trial,
- NLK Publikační typ
- závěrečné zprávy o řešení grantu AZV MZ ČR
BACKGROUND: Short and rare episodes of atrial fibrillation (AF) are commonly detected using implanted devices (device-detected AF) in patients with prior stroke or transient ischemic attack (TIA). The effectiveness and safety of oral anticoagulation in patients with prior stroke or TIA and device-detected AF but with no ECG-documented AF is unclear. METHODS AND RESULTS: This prespecified analysis of the NOAH-AFNET 6 (Non-Vitamin K Antagonist Oral Anticoagulants in Patients With Atrial High Rate Episodes) trial with post hoc elements assessed the effect of oral anticoagulation in patients with device-detected AF with and without a prior stroke or TIA in the randomized, double-blind, double-dummy NOAH-AFNET 6 trial. Outcomes were stroke, systemic embolism, and cardiovascular death (primary outcome) and major bleeding and death (safety outcome). A prior stroke or TIA was found in 253 patients with device-detected AF randomized in the NOAH-AFNET 6 (mean age, 78 years; 36.4% women). There was no treatment interaction with prior stroke or TIA for any of the primary and secondary time-to-event outcomes. In patients with a prior stroke or TIA, 14 out of 122 patients experienced a primary outcome event with anticoagulation (5.7% per patient-year). Without anticoagulation, there were 16 out of 131 patients with an event (6.3% per patient-year). The rate of stroke was lower than expected (anticoagulation: 4 out of 122 [1.6% per patient-year]; no anticoagulation: 6 out of 131 [2.3% per patient-year]). Numerically, there were more major bleeding events with anticoagulation in patients with prior stroke or TIA (8 out of 122 patients) than without anticoagulation (2 out of 131 patients). CONCLUSIONS: Anticoagulation appears to have ambiguous effects in patients with device-detected AF and a prior stroke or TIA in this hypothesis-generating analysis of the NOAH-AFNET 6 in the absence of ECG-documented AF, partially due to a low rate of stroke without anticoagulation.
- MeSH
- antikoagulancia * aplikace a dávkování škodlivé účinky terapeutické užití MeSH
- aplikace orální MeSH
- časové faktory MeSH
- cévní mozková příhoda * prevence a kontrola etiologie MeSH
- dvojitá slepá metoda MeSH
- fibrilace síní * farmakoterapie komplikace diagnóza MeSH
- kardiostimulátor MeSH
- krvácení chemicky indukované MeSH
- lidé MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- tranzitorní ischemická ataka * prevence a kontrola etiologie MeSH
- výsledek terapie MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- multicentrická studie MeSH
- randomizované kontrolované studie MeSH
Cardioneuroablation has emerged as a potential alternative to cardiac pacing in selected cases with vasovagal reflex syncope, extrinsic vagally induced sinus bradycardia-arrest or atrioventricular block. The technique was first introduced decades ago, and its use has risen over the past decade. However, as with any intervention, proper patient selection and technique are a prerequisite for a safe and effective use of cardioneuroablation therapy. This document aims to review and interpret available scientific evidence and provide a summary position on the topic.
- MeSH
- ablace MeSH
- bradykardie * terapie patofyziologie chirurgie diagnóza MeSH
- katetrizační ablace metody MeSH
- konsensus MeSH
- lidé MeSH
- srdeční frekvence MeSH
- vazovagální synkopa * chirurgie diagnóza patofyziologie MeSH
- výsledek terapie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
- směrnice pro lékařskou praxi MeSH