Evaluation of right ventricular pacing parameters in patients with proliferative scar

Abstract

PM/ICD-implanted patients with proliferative scar on pocket wound may show increased RV pacing thresholds compared to patients with normal healing of pocket wound.

Lead impedance, pacing threshold and percentage of ventricular pacing according to the lead age – a cross-sectional study upon patients during follow-up.

“…Another study performed on 130 patients with a pacemaker or implantable cardioverter-defibrillator (ICD) revealed no associations between pacing parameters (lead impedance and pacing threshold) and distribution of LVEF or coronary artery disease, although the mean lead impedance was lower and mean pacing threshold was higher in the ICD patients than in pacemaker patients [11] . Pacing parameters might also be modified by proliferative scarring within the myocardium -the study by Vurgun et al showed that patients with proliferative scars in the right ventricle had a significantly higher pacing threshold compared with the control group matched by sex, age and lead type [12] .…”

Effects of coronary artery disease in patients with permanent left bundle branch area pacing: A retrospective study

“…Prolonged myocardial ischemia has been shown to induce fibrosis in myocardial tissue [ [1] , [2] , [3] , [4] ], which may affect the pacing parameters leading to changes in the pacemaker's longevity [ 5 , 6 ]. Previous studies have reported that myocardial infarction, diabetes, serum potassium, and antiarrhythmic drugs (AADs) are associated with right ventricular (RV) pacing parameters changes [ [7] , [8] , [9] , [10] ], with additional research indicating that coronary artery disease (CAD) may influence capture threshold [ 11 , 12 ].…”