PMID- 29759576 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210402 IS - 2405-5018 (Electronic) IS - 2405-500X (Linking) VI - 2 IP - 5 DP - 2016 Oct TI - Time Dependence of Ventricular Tachyarrhythmias After Myocardial Infarction: A MADIT-CRT Substudy. PG - 565-573 LID - S2405-500X(16)30112-8 [pii] LID - 10.1016/j.jacep.2016.04.010 [doi] AB - OBJECTIVES: The purpose of this study was to assess the relationship between the time since a myocardial infarction (MI) and the risk of ventricular tachyarrhythmic events (VTEs) in patients with left ventricular dysfunction and mild symptoms of heart failure. BACKGROUND: Patients with left ventricular dysfunction after MI are at high risk for VTEs. METHODS: Ventricular tachycardia (VT), ventricular fibrillation (VF), or death as a function of time since MI was assessed in 693 patients enrolled in the MADIT-CRT (Multicenter Automatic Defibrillator Implantation Trial-Cardiac Resynchronization Therapy). Patients were categorized as those with a period of <3 years since an MI (lowest quartile, n = 172) versus those with a period of >/=3 years since an MI (n = 521). Risk of VT/VF or death was compared. RESULTS: Cumulative probability of VT/VF or death was significantly higher among patients in the highest quartile of time since an MI compared with those in the lowest quartile (41% vs. 22%, p = 0.015). Multivariate analysis showed that in patients with left bundle branch block (LBBB), those with a period of >/=3 years since an MI had a significantly higher risk of VT/VF or death (hazard ratio: 2.33; 95% confidence interval: 1.43 to 3.80; p = 0.001) and a higher risk of VT/VF (hazard ratio: 3.18; 95% confidence interval: 1.71 to 5.90; p < 0.001) compared with patients with a period of <3 years since an MI. These findings were consistent when the time since an MI was analyzed in a continuous fashion. A significant relationship between the time since an MI and outcomes was not observed in patients with non-LBBB. CONCLUSIONS: Among post-MI patients with left ventricular dysfunction and LBBB, the risk of VTEs is directly related to the time since an MI occurred. (Multicenter Automatic Defibrillator Implantation Trial-Cardiac Resynchronization Therapy [MADIT-CRT]; NCT00180271). CI - Copyright (c) 2016 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved. FAU - Ozlu, Mehmet F AU - Ozlu MF AD - Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey. FAU - Barsheshet, Alon AU - Barsheshet A AD - Cardiology Department, Rabin Medical Center, Petah Tikva, and Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel. FAU - Moss, Arthur J AU - Moss AJ AD - University of Rochester Medical Center, Rochester, New York, USA. FAU - Goldenberg, Ilan AU - Goldenberg I AD - University of Rochester Medical Center, Rochester, New York, USA. FAU - Kutyifa, Valentina AU - Kutyifa V AD - University of Rochester Medical Center, Rochester, New York, USA. FAU - Biton, Yitschak AU - Biton Y AD - University of Rochester Medical Center, Rochester, New York, USA. FAU - McNitt, Scott AU - McNitt S AD - University of Rochester Medical Center, Rochester, New York, USA. FAU - Zareba, Wojciech AU - Zareba W AD - University of Rochester Medical Center, Rochester, New York, USA. FAU - Aktas, Mehmet K AU - Aktas MK AD - University of Rochester Medical Center, Rochester, New York, USA. Electronic address: Mehmet_Aktas@urmc.rochester.edu. LA - eng SI - ClinicalTrials.gov/NCT00180271 PT - Journal Article DEP - 20160622 PL - United States TA - JACC Clin Electrophysiol JT - JACC. Clinical electrophysiology JID - 101656995 OTO - NOTNLM OT - cardiac resynchronization therapy OT - implantable cardioverter-defibrillators OT - myocardial infarction OT - ventricular fibrillation OT - ventricular tachycardia EDAT- 2016/10/01 00:00 MHDA- 2016/10/01 00:01 CRDT- 2018/05/16 06:00 PHST- 2015/07/16 00:00 [received] PHST- 2016/04/08 00:00 [revised] PHST- 2016/04/14 00:00 [accepted] PHST- 2018/05/16 06:00 [entrez] PHST- 2016/10/01 00:00 [pubmed] PHST- 2016/10/01 00:01 [medline] AID - S2405-500X(16)30112-8 [pii] AID - 10.1016/j.jacep.2016.04.010 [doi] PST - ppublish SO - JACC Clin Electrophysiol. 2016 Oct;2(5):565-573. doi: 10.1016/j.jacep.2016.04.010. Epub 2016 Jun 22.