title: Neurohormonal, structural, and functional recovery pattern after premature ventricular complex ablation is independent of structural heart disease status in patients with depressed left ventricular ejection fraction: a prospective multicenter study.
abstract: This study aimed to assess the benefit after ablation of premature ventricular complexes (PVC) in patients with frequent PVC and left ventricular (LV) dysfunction, regardless of previous structural heart disease (SHD) diagnosis, PVC morphology, or estimated site of origin.
  
  
  
  Ablation of PVC in patients with LV dysfunction is usually restricted to patients with suspected PVC-induced cardiomyopathy.
  
  
  
  Consecutive patients with frequent PVC and LV dysfunction accepted for ablation at 4 centers were prospectively included. Of the 80 patients included, 27 (34%) had a diagnosis of SHD.
  
  
  
  Successful sustained ablation (SSA) was achieved in 53 (66%) patients, and LVEF improved in these patients from 33.7 ± 8% to 43.8 ± 9.4% and 45.8 ± 10.9% at 6 and 12 months, respectively (p < 0.05), without differences related to previous diagnosis of SHD (p = 0.69). BNP decreased from 109 [64 to 242] pg/ml to 60 [25 to 170] pg/ml, 50 [14 to 130] pg/ml, and 60 [19 to 81] pg/ml at 1, 6, and 12 months (p < 0.05). Patients in NYHA class I increased from 12 (23%) to 42 (79%) at 12 months (p < 0.05). A 13% baseline PVC burden had 100% sensitivity and 85% specificity to predict an absolute increase ≥ 5% in LVEF after SSA. Although 20 patients with >13% PVC and SSA had class I indication for cardioverter defibrillator implantation, these indications were absent at 6 months post-ablation.
  
  
  
  Independently of the presence of SHD, the SSA of frequent PVC in patients with depressed LVEF induced a progressive clinical and functional improvement. Improvement in heart failure parameters was related to baseline PVC burden and persistence of ablation success.
authors.affiliation: Department of Cardiology, Thorax Institute, Hospital Clínic and Institut d'Investigació Agustí Pi i Sunyer, Barcelona, Spain.
authors.forename: Diego
authors.initials: D
authors.lastname: Penela
authors.forename: Carine
authors.initials: C
authors.lastname: Van Huls Van Taxis
authors.forename: Carine
authors.initials: C
authors.lastname: Van Huls Vans Taxis
authors.forename: Luis
authors.initials: L
authors.lastname: Aguinaga
authors.forename: Juan
authors.initials: J
authors.lastname: Fernández-Armenta
authors.forename: Lluis
authors.initials: L
authors.lastname: Mont
authors.forename: Maria Angels
authors.initials: MA
authors.lastname: Castel
authors.forename: Magda
authors.initials: M
authors.lastname: Heras
authors.forename: Jose María
authors.initials: JM
authors.lastname: Tolosana
authors.forename: Marta
authors.initials: M
authors.lastname: Sitges
authors.forename: Augusto
authors.initials: A
authors.lastname: Ordóñez
authors.forename: Josep
authors.initials: J
authors.lastname: Brugada
authors.forename: Katja
authors.initials: K
authors.lastname: Zeppenfeld
authors.forename: Antonio
authors.initials: A
authors.lastname: Berruezo
mesh_terms: D000328:Adult; D000368:Aged; D017115:Catheter Ablation; D004452:Echocardiography; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D020097:Natriuretic Peptide, Brain / Q000097:blood; D011446:Prospective Studies; D020127:Recovery of Function; D013318:Stroke Volume; D017211:Treatment Failure; D018487:Ventricular Dysfunction, Left / Q000097:blood / Q000150:complications / Q000601:surgery*; D018879:Ventricular Premature Complexes / Q000097:blood / Q000150:complications / Q000601:surgery*
chemical_list: D020097:Natriuretic Peptide, Brain
keywords: BNP; ECG; ICD; IHD; LVEF; N-terminal pro brain natriuretic peptide; NT proBNP; NYHA; New York Heart Association; PVC; RFCA; SHD; SOO; SSA; VT; brain natriuretic peptide; ce-CMR; contrast-enhanced cardiac magnetic resonance; electrocardiogram; implantable cardioverter-defibrillator; ischemic heart disease; left ventricular ejection fraction; premature ventricular complex; premature ventricular complexes; radiofrequency catheter ablation; site of origin; structural heart disease; successful sustained ablation; ventricular tachycardia