PMID- 29052236 OWN - NLM STAT- MEDLINE DCOM- 20180917 LR - 20180917 IS - 1540-8159 (Electronic) IS - 0147-8389 (Linking) VI - 40 IP - 12 DP - 2017 Dec TI - Heart failure severity, inappropriate ICD therapy, and novel ICD programming: a MADIT-RIT substudy. PG - 1405-1411 LID - 10.1111/pace.13216 [doi] AB - BACKGROUND: The effects of heart failure (HF) severity on risk of inappropriate implantable cardioverter-defibrillator (ICD) therapy have not been thoroughly investigated. We aimed to study the association between HF severity and inappropriate ICD therapy in MADIT-RIT. METHODS: MADIT-RIT randomized 1,500 patients to three ICD programming arms: conventional (Arm A), high-rate cut-off (Arm B: >/=200 beats/min), and delayed therapy (Arm C: 60-second delay for >/=170 beats/min). We evaluated the association between New York Heart Association (NYHA) class III (n = 256) versus class I-II (n = 251) and inappropriate ICD therapy in Arm A patients with ICD-only and cardiac resynchronization therapy with defibrillator (CRT-D). We additionally assessed benefit of novel ICD programming in Arms B and C versus Arm A by NYHA classification. RESULTS: In Arm A, the risk of inappropriate therapy was significantly higher in those with NYHA III versus NYHA I-II for both ICD (hazard ratio [HR] = 2.55, confidence interval [CI]: 1.51-4.30, P < 0.001) and CRT-D patients (HR = 3.73, CI: 1.14-12.23, P = 0.030). This was consistent for inappropriate ATP and inappropriate ICD therapy < 200 beats/min, but not for inappropriate shocks. Novel ICD programming significantly reduced inappropriate therapy in patients with both NYHA III (Arm B vs Arm A: HR = 0.08, P < 0.001; Arm C vs Arm A: HR = 0.17, P < 0.001) and NYHA I-II (Arm B vs Arm A: HR = 0.25, P < 0.001; Arm C vs Arm A: HR = 0.28, P < 0.001). CONCLUSION: Patients with more severe HF are at increased risk for inappropriate ICD therapy, particularly ATP due to arrhythmias < 200 beats/min. Novel programming with high-rate cut-off or delayed detection reduces inappropriate ICD therapies in both mild and moderate HF. CI - (c) 2017 Wiley Periodicals, Inc. FAU - Daimee, Usama A AU - Daimee UA AUID- ORCID: 0000-0002-2839-5564 AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. FAU - Vermilye, Katherine AU - Vermilye K AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. FAU - Rosero, Spencer AU - Rosero S AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. FAU - Schuger, Claudio D AU - Schuger CD AD - Division of Cardiology, Henry Ford Hospital, Detroit, MI, USA. FAU - Daubert, James P AU - Daubert JP AD - Cardiology Division, Duke University Medical Center, Durham, NC, USA. FAU - Zareba, Wojciech AU - Zareba W AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. FAU - McNitt, Scott AU - McNitt S AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. FAU - Polonsky, Bronislava AU - Polonsky B AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. FAU - Moss, Arthur J AU - Moss AJ AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. FAU - Kutyifa, Valentina AU - Kutyifa V AD - Heart Research Follow-Up Program, University of Rochester Medical Center, Rochester, NY, USA. LA - eng PT - Journal Article DEP - 20171122 PL - United States TA - Pacing Clin Electrophysiol JT - Pacing and clinical electrophysiology : PACE JID - 7803944 SB - IM MH - *Cardiac Resynchronization Therapy MH - *Defibrillators, Implantable MH - Female MH - Heart Failure/*therapy MH - Humans MH - Male MH - Medical Overuse MH - Middle Aged MH - Randomized Controlled Trials as Topic MH - Retrospective Studies MH - Severity of Illness Index OTO - NOTNLM OT - HF severity OT - inappropriate ICD therapy OT - novel ICD programming EDAT- 2017/10/21 06:00 MHDA- 2018/09/18 06:00 CRDT- 2017/10/21 06:00 PHST- 2017/04/25 00:00 [received] PHST- 2017/08/13 00:00 [revised] PHST- 2017/08/28 00:00 [accepted] PHST- 2017/10/21 06:00 [pubmed] PHST- 2018/09/18 06:00 [medline] PHST- 2017/10/21 06:00 [entrez] AID - 10.1111/pace.13216 [doi] PST - ppublish SO - Pacing Clin Electrophysiol. 2017 Dec;40(12):1405-1411. doi: 10.1111/pace.13216. Epub 2017 Nov 22.