Article Text

PDF
Beneficial effects of catheter ablation on left ventricular and right ventricular function in patients with frequent premature ventricular contractions and preserved ejection fraction
  1. Adrianus P Wijnmaalen,
  2. Victoria Delgado,
  3. Martin J Schalij,
  4. Carine F B van Huls van Taxis,
  5. Eduard R Holman,
  6. Jeroen J Bax,
  7. Katja Zeppenfeld
  1. Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
  1. Correspondence to Dr K Zeppenfeld, Leiden University Medical Center, Postbus 9600, 2300 RC Leiden, The Netherlands; k.zeppenfeld{at}lumc.nl

Abstract

Background Improvement of left ventricular ejection fraction (LVEF) after radiofrequency catheter ablation (RFCA) of frequent premature ventricular contractions (PVCs) has been reported. However, most patients with frequent PVCs have a normal LVEF. In these patients subtle and early forms of PVC-induced left and right ventricular (RV) impairment may not be detected by standard echocardiographic techniques.

Objective To assess the effect of frequent PVCs on ventricular function in patients with preserved LVEF.

Methods 49 patients (30 male, 49±16 years) with recent-onset (median 1.2 years), frequent PVCs (burden 26±13%) and 25 healthy controls were studied. Thirty-four patients with PVCs underwent successful RFCA. Two-dimensional echocardiography was performed at baseline and follow-up. LV volumes and LVEF were calculated by Simpson's rule. Tricuspid annulus plane systolic excursion and fractional area change were calculated to assess RV function. Multidirectional LV strain (radial, circumferential, longitudinal) and RV free-wall longitudinal strain were calculated by two-dimensional speckle tracking imaging. At baseline LVEF, volumes and RV dimensions were normal in patients and controls.

Results Speckle tracking imaging demonstrated reduced LV and RV strain in patients with PVC as compared with controls. At follow-up there were no changes in LVEF, LV volumes and RV dimensions and function in patients successfully treated by RFCA and untreated patients. However, radial, circumferential and longitudinal strain improved significantly in patients after RFCA but remained unchanged in untreated patients.

Conclusions Frequent PVCs can induce subtle cardiac dysfunction detected by speckle tracking imaging analysis in patients without apparent cardiomyopathy. RFCA can successfully eliminate PVCs and improve cardiac function.

  • Premature ventricular contraction
  • ventricular dysfunction catheter ablation
  • radiofrequency ablation (RFA)
  • ventricular tachycardia
  • echocardiography (three-dimensional)

Statistics from Altmetric.com

Footnotes

  • APW and VD contributed equally to this article and are joint first authors.

  • Funding JJB received research grants from GE Healthcare, BMS medical imaging, St Jude, Medtronic, Boston Scientific, Biotronik, and Edwards Lifesciences. MJS received research grants from Biotronik, Medtronic and Boston Scientific. The other authors have no disclosures to report.

  • Competing interests None.

  • Provenance and peer review Not commissioned; externally peer reviewed.

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.