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Rademaker R, Kimura Y, de Riva Silva M, Beukers HC, Piers SRD, Wijnmaalen AP, Dekkers OM, Zeppenfeld K. Area-weighted unipolar voltage to predict heart failure outcomes in patients with ischaemic cardiomyopathy and ventricular tachycardia. Europace 2024; 26:euad346. [PMID: 38308809 PMCID: PMC10838146 DOI: 10.1093/europace/euad346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/15/2023] [Indexed: 02/05/2024] Open
Abstract
AIMS Patients with ischaemic cardiomyopathy (ICM) referred for catheter ablation of ventricular tachycardia (VT) are at risk for end-stage heart failure (HF) due to adverse remodelling. Local unipolar voltages (UV) decrease with loss of viable myocardium. A UV parameter reflecting global viable myocardium may predict prognosis. We evaluate if a newly proposed parameter, area-weighted unipolar voltage (awUV), can predict HF-related outcomes [HFO; HF death/left ventricular (LV) assist device/heart transplant] in ICM. METHODS AND RESULTS From endocardial voltage maps of consecutive patients with ICM referred for VT ablation, awUV was calculated by weighted interpolation of local UV. Associations between clinical and mapping parameters and HFO were evaluated and validated in a second cohort. The derivation cohort consisted of 90 patients [age 68 ±8 years; LV ejection fraction (LVEF) 35% interquartile range (IQR) (24-40)] and validation cohort of 60 patients [age 67 ± 9, LVEF 39% IQR (29-45)]. In the derivation cohort, during a median follow-up of 45 months [IQR (34-83)], 36 (43%) patients died and 23 (26%) had HFO. Patients with HFO had lower awUV [4.51 IQR (3.69-5.31) vs. 7.03 IQR (6.08-9.2), P < 0.001]. A reduction in awUV [optimal awUV (5.58) cut-off determined by receiver operating characteristics analysis] was a strong predictor of HFO (3-year HFO survival 97% vs. 57%). The cut-off value was confirmed in the validation cohort (2-year HFO-free survival 96% vs. 60%). CONCLUSION The newly proposed parameter awUV, easily available from routine voltage mapping, may be useful at identifying ICM patients at high risk for HFO.
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Affiliation(s)
- Robert Rademaker
- Department of Cardiology (C-05-P), Leiden University Medical Center, P.O. Box 9600, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Willem Einthoven Center of Arrhythmia Research and Management, Leiden, The Netherlands
| | - Yoshi Kimura
- Department of Cardiology (C-05-P), Leiden University Medical Center, P.O. Box 9600, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Willem Einthoven Center of Arrhythmia Research and Management, Leiden, The Netherlands
| | - Marta de Riva Silva
- Department of Cardiology (C-05-P), Leiden University Medical Center, P.O. Box 9600, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Willem Einthoven Center of Arrhythmia Research and Management, Leiden, The Netherlands
| | - Hans C Beukers
- Department of Cardiology (C-05-P), Leiden University Medical Center, P.O. Box 9600, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Sebastiaan R D Piers
- Department of Cardiology (C-05-P), Leiden University Medical Center, P.O. Box 9600, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Willem Einthoven Center of Arrhythmia Research and Management, Leiden, The Netherlands
| | - Adrianus P Wijnmaalen
- Department of Cardiology (C-05-P), Leiden University Medical Center, P.O. Box 9600, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Willem Einthoven Center of Arrhythmia Research and Management, Leiden, The Netherlands
| | - Olaf M Dekkers
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Katja Zeppenfeld
- Department of Cardiology (C-05-P), Leiden University Medical Center, P.O. Box 9600, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Willem Einthoven Center of Arrhythmia Research and Management, Leiden, The Netherlands
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