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

OBJECTIVES:

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.

BACKGROUND:

Ablation of PVC in patients with LV dysfunction is usually restricted to patients with suspected PVC-induced cardiomyopathy.

METHODS:

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.

RESULTS:

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.

CONCLUSIONS:

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: Diego Penela, Carine Van Huls Van Taxis, Carine Van Huls Vans Taxis, Luis Aguinaga, Juan Fernández-Armenta, Lluis Mont, Maria Angels Castel, Magda Heras, Jose María Tolosana, Marta Sitges, Augusto Ordóñez, Josep Brugada, Katja Zeppenfeld, Antonio Berruezo
• Journal: Journal of the American College of Cardiology (J Am Coll Cardiol) Vol. 62 Issue 13 Pg. 1195-202 (09 24 2013) ISSN: 1558-3597 [Electronic] United States
• PMID: 23850913 (Publication Type: Journal Article, Multicenter Study, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2013 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.

Chemical References

• Natriuretic Peptide, Brain

Topics

• Adult
• Aged
• Catheter Ablation
• Echocardiography
• Female
• Humans
• Magnetic Resonance Imaging
• Male
• Middle Aged
• Natriuretic Peptide, Brain (blood)
• Prospective Studies
• Recovery of Function
• Stroke Volume
• Treatment Failure
• Ventricular Dysfunction, Left (blood, complications, surgery)
• Ventricular Premature Complexes (blood, complications, surgery)