Christoph M, Marius S, Karl S, Friedrich K. Efficacy of CRT upgrade in pacemaker-induced cardiomyopathy in an outpatient clinic - Results of a prospective registry.
Int J Cardiol 2023;
377:60-65. [PMID:
36738844 DOI:
10.1016/j.ijcard.2023.01.077]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/18/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023]
Abstract
PURPOSE
The aim of this prospective, monocentric registry study was to investigate whether upgrading to cardiac resynchronization therapy (CRT) in pacemaker-induced cardiomyopathy (PICM) can improve left ventricular function in typical outpatient clinical patients.
METHODS
We screened for PICM in a pacemaker outpatient clinic between 2017 and 2021. The follow-up period was 6 months. The primary endpoint was decreased left ventricular end systolic volume (LVESV), and the responder criterion was decreased LVESV >15%. Secondary endpoints were LVEF, NYHA class, device-associated complications and death.
RESULTS
66 patients were newly diagnosed with PICM. 55 of them received a CRT upgrade. For the primary endpoint, LVESV decreased from 101.6 ± 48.2 ml to 75.9 ± 35.8 ml (p < 0.001). Secondary endpoints were: a) LVEF increased from 31.5 ± 5.4% to 46.1 ± 7.6% (p < 0.001) and b) NYHA class improved by an average of one class in both groups (p < 0.001). The overall complication rate was 1.8%.
CONCLUSIONS
CRT upgrade in outpatient clinic patients with PICM improves left ventricular function and functional capacity and is associated with an acceptable complication rate.
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