Clinical impact of applying strategic programming in patients with implantable cardioverter‑defibrillators beyond reducing inappropriate shocks
10.1186/s42444-020-00012-w
- Author:
You Mi HWANG
1
;
Jun KIM
;
Gi Byoung NAM
;
Kee Joon CHOI
;
You Ho KIM
;
Seo Young PARK
Author Information
1. Department of Cardiology, St.Vincent’s Hospital, The Catholic University of Korea, Suwon, Korea
- Publication Type:RESEARCH
- From:International Journal of Arrhythmia
2020;21(1):e4-
- CountryRepublic of Korea
- Language:0
-
Abstract:
Background:The incidence of inappropriate shocks remains high at 30% in patients with implantable cardioverter-defibrillators (ICDs). This retrospective study sought to examine the efficacy of strategic programming (ICD programming with a long detection interval and high-rate cutoff) in reducing electrical storm, inappropriate shocks, and unexpected hospital visits in patients with ICDs with/without cardiac resynchronization therapy with defibrillator (CRT-Ds).
Methods:This was a single tertiary center retrospective study, evaluating the clinical outcomes, especially regarding inappropriate therapies in patients with ICDs or CRT-Ds. Enrolled patients underwent ICD or CRT-D implantations from January 2008 to May 2016. Clinical information was attained by a thorough chart review.
Results:We analyzed 155 defibrillator patients from January 2008 to May 2016 (124 patients had ICDs and 31 had CRT-Ds). Since we adopted this strategic programming as a default programming from 2015 implanted ICDs and CRT-Ds, we divided the patients into two groups: devices implanted before 2015 (group A, n = 94) versus implanted after 2015 (group B, n = 61). During a median of 1289 days of follow-up, electrical storms occurred in three patients (eight events) in group B versus 11 (28 events) in group A (P = 0.18); appropriate therapies were delivered in 27 patients (56 events) in group A versus 7 (15 events) in group B (P = 0.72); inappropriate therapies were delivered in 15 patients (21 events) in group A versus 1 with 1 episode in group B (P = 0.03); and 5 unexpected hospitalizations occurred in four patients in group B versus 36 in 24 patients in group A (P = 0.02).
Conclusion:The clinical application of strategic programming reduced inappropriate shocks and unexpected hospitalizations in ICD and CRT-D patients.
