Journal of Interventional Cardiac Electrophysiology

, Volume 36, Issue 3, pp 223–231

Right ventricular lead adjustment in cardiac resynchronization therapy and acute hemodynamic response: a pilot study

  • Prabhat Kumar
  • Gaurav A. Upadhyay
  • Christine Cavaliere-Ogus
  • E. Kevin Heist
  • Robert K. Altman
  • Neal A. Chatterjee
  • Kimberly A. Parks
  • Jagmeet P. Singh
Article

DOI: 10.1007/s10840-012-9759-1

Cite this article as:
Kumar, P., Upadhyay, G.A., Cavaliere-Ogus, C. et al. J Interv Card Electrophysiol (2013) 36: 223. doi:10.1007/s10840-012-9759-1

Abstract

Purpose

Optimal left ventricular (LV) lead position has emerged as an important determinant of response after cardiac resynchronization therapy (CRT). Comparatively, strategy for right ventricular (RV) lead optimization remains uncertain.

Methods

Three variations of RV lead position (apex, mid-septal, and high septal) were tested in seven consecutive patients. At each location, intra-procedural measurement of LV lead electrical delay (LVLED) was obtained during intrinsic rhythm and RV pacing (RV-LVLED). Simultaneous cardiac output assessment was performed using the LiDCO™ (lithium chloride indicator dilution) system. Final RV lead location was selected based on best-measured cardiac output. Clinical and echocardiographic outcomes were assessed at baseline and 6 months.

Results

Adjustment of RV lead position after securing a LV lead site led to an incremental change of 30 ± 18 % (range, 7–52 %) in the cardiac index (CI). There was substantial variation in acute hemodynamic response (∆CI, 14 ± 13 %; range, 3–41 %) seen with pacing from each patient’s worst to best RV lead position; no single RV lead position emerged as optimal across all patients. Paced RV-LVLED was not correlated with percent change in CI (r = 0.18; p = NS). LV ejection fraction (LVEF) increased significantly (28 ± 4 to 40 ± 8 %, p = 0.006) at 6 months. LVLED measured during intrinsic rhythm, but not during RV pacing, correlated with percent change in LVEF (r = 0.88, p = 0.02).

Conclusions

RV lead position adjustment can be used to enhance acute hemodynamic response during CRT. Measurement of paced RV-LVLED, however, does not reliably predict change in cardiac output.

Keywords

Cardiac resynchronization therapyRight ventricular lead positionLeft ventricular lead positionLeft ventricular lead electrical delayHemodynamic response

Abbreviations

CRT

Cardiac resynchronization therapy

LV

Left ventricle

RV

Right ventricle

LVLED

Left ventricular lead electrical delay

RV-LVLED

RV-LV interlead electrical delay

LVEF

LV ejection fraction

NYHA

New York Heart Association

MLHFQ

Minnesota living with heart failure questionnaire

CI

Cardiac index

AV

Atrio-ventricular

VV

Interventricular

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Prabhat Kumar
    • 1
  • Gaurav A. Upadhyay
    • 1
  • Christine Cavaliere-Ogus
    • 1
  • E. Kevin Heist
    • 1
  • Robert K. Altman
    • 1
  • Neal A. Chatterjee
    • 1
  • Kimberly A. Parks
    • 1
  • Jagmeet P. Singh
    • 1
    • 2
  1. 1.Cardiac Arrhythmia Service, Harvard Medical SchoolMassachusetts General Hospital Heart CenterBostonUSA
  2. 2.Cardiac Arrhythmia Service, GRB 109Massachusetts General Hospital Heart CenterBostonUSA